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    <title>DEV Community: Paper &amp; Linen Studio</title>
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      <title>Collect RSVPs on a static wedding website with Formspree or Google Forms (no backend)</title>
      <dc:creator>Paper &amp; Linen Studio</dc:creator>
      <pubDate>Thu, 29 Oct 2026 12:54:43 +0000</pubDate>
      <link>https://dev.to/paperandlinenstudio/collect-rsvps-on-a-static-wedding-website-with-formspree-or-google-forms-no-backend-1a6m</link>
      <guid>https://dev.to/paperandlinenstudio/collect-rsvps-on-a-static-wedding-website-with-formspree-or-google-forms-no-backend-1a6m</guid>
      <description>&lt;p&gt;A wedding website is one of the nicest "first real projects" you can build: one page, a fixed audience, a hard deadline. The only part that seems to need a server is the RSVP form. It doesn't. This post shows two ways to collect RSVPs from a plain HTML page hosted for free on Netlify, GitHub Pages or Cloudflare Pages:&lt;/p&gt;

&lt;ol&gt;
&lt;li&gt;
&lt;strong&gt;Formspree&lt;/strong&gt; – your form posts to a Formspree endpoint and responses land in your inbox/dashboard.&lt;/li&gt;
&lt;li&gt;
&lt;strong&gt;Google Forms&lt;/strong&gt; – responses go straight into a Google Sheet.&lt;/li&gt;
&lt;/ol&gt;

&lt;p&gt;We'll also add a tiny countdown, because every wedding site needs one.&lt;/p&gt;

&lt;blockquote&gt;
&lt;p&gt;Note: free plans and their limits change. Check Formspree's and Google's current terms before relying on them for a big guest list.&lt;/p&gt;
&lt;/blockquote&gt;

&lt;h2&gt;
  
  
  1. The RSVP form (works without JavaScript)
&lt;/h2&gt;

&lt;p&gt;Start with a normal HTML form. If JavaScript fails, the browser still submits it the old-fashioned way, so you never lose an RSVP.&lt;br&gt;
&lt;/p&gt;

&lt;div class="highlight js-code-highlight"&gt;
&lt;pre class="highlight html"&gt;&lt;code&gt;&lt;span class="nt"&gt;&amp;lt;form&lt;/span&gt; &lt;span class="na"&gt;class=&lt;/span&gt;&lt;span class="s"&gt;"rsvp"&lt;/span&gt; &lt;span class="na"&gt;action=&lt;/span&gt;&lt;span class="s"&gt;"https://formspree.io/f/YOUR_FORM_ID"&lt;/span&gt; &lt;span class="na"&gt;method=&lt;/span&gt;&lt;span class="s"&gt;"POST"&lt;/span&gt;&lt;span class="nt"&gt;&amp;gt;&lt;/span&gt;
  &lt;span class="nt"&gt;&amp;lt;input&lt;/span&gt; &lt;span class="na"&gt;type=&lt;/span&gt;&lt;span class="s"&gt;"hidden"&lt;/span&gt; &lt;span class="na"&gt;name=&lt;/span&gt;&lt;span class="s"&gt;"subject"&lt;/span&gt; &lt;span class="na"&gt;value=&lt;/span&gt;&lt;span class="s"&gt;"New RSVP: Emma &amp;amp;amp; Liam"&lt;/span&gt;&lt;span class="nt"&gt;&amp;gt;&lt;/span&gt;
  &lt;span class="c"&gt;&amp;lt;!-- spam honeypot: keep hidden &amp;amp; empty --&amp;gt;&lt;/span&gt;
  &lt;span class="nt"&gt;&amp;lt;input&lt;/span&gt; &lt;span class="na"&gt;class=&lt;/span&gt;&lt;span class="s"&gt;"hp"&lt;/span&gt; &lt;span class="na"&gt;type=&lt;/span&gt;&lt;span class="s"&gt;"text"&lt;/span&gt; &lt;span class="na"&gt;name=&lt;/span&gt;&lt;span class="s"&gt;"_gotcha"&lt;/span&gt; &lt;span class="na"&gt;tabindex=&lt;/span&gt;&lt;span class="s"&gt;"-1"&lt;/span&gt; &lt;span class="na"&gt;autocomplete=&lt;/span&gt;&lt;span class="s"&gt;"off"&lt;/span&gt;&lt;span class="nt"&gt;&amp;gt;&lt;/span&gt;

  &lt;span class="nt"&gt;&amp;lt;label&amp;gt;&lt;/span&gt;Full name(s)
    &lt;span class="nt"&gt;&amp;lt;input&lt;/span&gt; &lt;span class="na"&gt;name=&lt;/span&gt;&lt;span class="s"&gt;"name"&lt;/span&gt; &lt;span class="na"&gt;required&lt;/span&gt; &lt;span class="na"&gt;autocomplete=&lt;/span&gt;&lt;span class="s"&gt;"name"&lt;/span&gt; &lt;span class="na"&gt;placeholder=&lt;/span&gt;&lt;span class="s"&gt;"Your name"&lt;/span&gt;&lt;span class="nt"&gt;&amp;gt;&lt;/span&gt;
  &lt;span class="nt"&gt;&amp;lt;/label&amp;gt;&lt;/span&gt;
  &lt;span class="nt"&gt;&amp;lt;label&amp;gt;&lt;/span&gt;Email
    &lt;span class="nt"&gt;&amp;lt;input&lt;/span&gt; &lt;span class="na"&gt;type=&lt;/span&gt;&lt;span class="s"&gt;"email"&lt;/span&gt; &lt;span class="na"&gt;name=&lt;/span&gt;&lt;span class="s"&gt;"email"&lt;/span&gt; &lt;span class="na"&gt;autocomplete=&lt;/span&gt;&lt;span class="s"&gt;"email"&lt;/span&gt; &lt;span class="na"&gt;placeholder=&lt;/span&gt;&lt;span class="s"&gt;"you@example.com"&lt;/span&gt;&lt;span class="nt"&gt;&amp;gt;&lt;/span&gt;
  &lt;span class="nt"&gt;&amp;lt;/label&amp;gt;&lt;/span&gt;
  &lt;span class="nt"&gt;&amp;lt;label&amp;gt;&lt;/span&gt;Attending?
    &lt;span class="nt"&gt;&amp;lt;select&lt;/span&gt; &lt;span class="na"&gt;name=&lt;/span&gt;&lt;span class="s"&gt;"attending"&lt;/span&gt;&lt;span class="nt"&gt;&amp;gt;&lt;/span&gt;
      &lt;span class="nt"&gt;&amp;lt;option&amp;gt;&lt;/span&gt;Joyfully accepts&lt;span class="nt"&gt;&amp;lt;/option&amp;gt;&lt;/span&gt;
      &lt;span class="nt"&gt;&amp;lt;option&amp;gt;&lt;/span&gt;Regretfully declines&lt;span class="nt"&gt;&amp;lt;/option&amp;gt;&lt;/span&gt;
    &lt;span class="nt"&gt;&amp;lt;/select&amp;gt;&lt;/span&gt;
  &lt;span class="nt"&gt;&amp;lt;/label&amp;gt;&lt;/span&gt;
  &lt;span class="nt"&gt;&amp;lt;label&amp;gt;&lt;/span&gt;Number of guests
    &lt;span class="nt"&gt;&amp;lt;select&lt;/span&gt; &lt;span class="na"&gt;name=&lt;/span&gt;&lt;span class="s"&gt;"guests"&lt;/span&gt;&lt;span class="nt"&gt;&amp;gt;&amp;lt;option&amp;gt;&lt;/span&gt;1&lt;span class="nt"&gt;&amp;lt;/option&amp;gt;&amp;lt;option&amp;gt;&lt;/span&gt;2&lt;span class="nt"&gt;&amp;lt;/option&amp;gt;&amp;lt;option&amp;gt;&lt;/span&gt;3&lt;span class="nt"&gt;&amp;lt;/option&amp;gt;&amp;lt;option&amp;gt;&lt;/span&gt;4&lt;span class="nt"&gt;&amp;lt;/option&amp;gt;&amp;lt;/select&amp;gt;&lt;/span&gt;
  &lt;span class="nt"&gt;&amp;lt;/label&amp;gt;&lt;/span&gt;
  &lt;span class="nt"&gt;&amp;lt;label&amp;gt;&lt;/span&gt;Meal choice
    &lt;span class="nt"&gt;&amp;lt;select&lt;/span&gt; &lt;span class="na"&gt;name=&lt;/span&gt;&lt;span class="s"&gt;"meal"&lt;/span&gt;&lt;span class="nt"&gt;&amp;gt;&amp;lt;option&amp;gt;&lt;/span&gt;Beef&lt;span class="nt"&gt;&amp;lt;/option&amp;gt;&amp;lt;option&amp;gt;&lt;/span&gt;Fish&lt;span class="nt"&gt;&amp;lt;/option&amp;gt;&amp;lt;option&amp;gt;&lt;/span&gt;Vegetarian&lt;span class="nt"&gt;&amp;lt;/option&amp;gt;&amp;lt;/select&amp;gt;&lt;/span&gt;
  &lt;span class="nt"&gt;&amp;lt;/label&amp;gt;&lt;/span&gt;
  &lt;span class="nt"&gt;&amp;lt;label&amp;gt;&lt;/span&gt;Dietary notes / song request
    &lt;span class="nt"&gt;&amp;lt;textarea&lt;/span&gt; &lt;span class="na"&gt;name=&lt;/span&gt;&lt;span class="s"&gt;"notes"&lt;/span&gt; &lt;span class="na"&gt;rows=&lt;/span&gt;&lt;span class="s"&gt;"3"&lt;/span&gt;&lt;span class="nt"&gt;&amp;gt;&amp;lt;/textarea&amp;gt;&lt;/span&gt;
  &lt;span class="nt"&gt;&amp;lt;/label&amp;gt;&lt;/span&gt;

  &lt;span class="nt"&gt;&amp;lt;button&lt;/span&gt; &lt;span class="na"&gt;type=&lt;/span&gt;&lt;span class="s"&gt;"submit"&lt;/span&gt;&lt;span class="nt"&gt;&amp;gt;&lt;/span&gt;Send RSVP&lt;span class="nt"&gt;&amp;lt;/button&amp;gt;&lt;/span&gt;
  &lt;span class="nt"&gt;&amp;lt;p&lt;/span&gt; &lt;span class="na"&gt;class=&lt;/span&gt;&lt;span class="s"&gt;"form-status"&lt;/span&gt; &lt;span class="na"&gt;role=&lt;/span&gt;&lt;span class="s"&gt;"status"&lt;/span&gt; &lt;span class="na"&gt;aria-live=&lt;/span&gt;&lt;span class="s"&gt;"polite"&lt;/span&gt;&lt;span class="nt"&gt;&amp;gt;&amp;lt;/p&amp;gt;&lt;/span&gt;
&lt;span class="nt"&gt;&amp;lt;/form&amp;gt;&lt;/span&gt;
&lt;/code&gt;&lt;/pre&gt;

&lt;/div&gt;





&lt;div class="highlight js-code-highlight"&gt;
&lt;pre class="highlight css"&gt;&lt;code&gt;&lt;span class="nc"&gt;.hp&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt; &lt;span class="nl"&gt;position&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="nb"&gt;absolute&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt; &lt;span class="nl"&gt;left&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="m"&gt;-9999px&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt; &lt;span class="p"&gt;}&lt;/span&gt;  &lt;span class="c"&gt;/* hide the honeypot from humans */&lt;/span&gt;
&lt;/code&gt;&lt;/pre&gt;

&lt;/div&gt;



&lt;p&gt;A few details worth copying:&lt;/p&gt;

&lt;ul&gt;
&lt;li&gt;
&lt;strong&gt;Every field has a &lt;code&gt;name&lt;/code&gt;.&lt;/strong&gt; That's what shows up as the column/key in your responses. No &lt;code&gt;name&lt;/code&gt;, no data.&lt;/li&gt;
&lt;li&gt;
&lt;strong&gt;&lt;code&gt;_gotcha&lt;/code&gt; honeypot.&lt;/strong&gt; Bots fill every field; humans never see this one. Formspree treats submissions with it filled as spam.&lt;/li&gt;
&lt;li&gt;
&lt;strong&gt;&lt;code&gt;role="status"&lt;/code&gt; + &lt;code&gt;aria-live="polite"&lt;/code&gt;&lt;/strong&gt; means screen readers announce your "Thank you!" message.&lt;/li&gt;
&lt;/ul&gt;

&lt;h3&gt;
  
  
  Setting up Formspree
&lt;/h3&gt;

&lt;ol&gt;
&lt;li&gt;Create a free account at formspree.io and create a new form.&lt;/li&gt;
&lt;li&gt;Copy the endpoint, which looks like &lt;code&gt;https://formspree.io/f/abcdwxyz&lt;/code&gt;.&lt;/li&gt;
&lt;li&gt;Replace &lt;code&gt;YOUR_FORM_ID&lt;/code&gt; in the &lt;code&gt;action&lt;/code&gt; attribute.&lt;/li&gt;
&lt;li&gt;Submit once yourself – Formspree will ask you to confirm the first submission.&lt;/li&gt;
&lt;/ol&gt;

&lt;h2&gt;
  
  
  2. Submit with fetch and show a success message
&lt;/h2&gt;

&lt;p&gt;Without JavaScript, the guest gets redirected to a Formspree thank-you page. That's fine, but staying on your page is nicer. Formspree returns JSON when you send &lt;code&gt;Accept: application/json&lt;/code&gt;:&lt;br&gt;
&lt;/p&gt;

&lt;div class="highlight js-code-highlight"&gt;
&lt;pre class="highlight javascript"&gt;&lt;code&gt;&lt;span class="kd"&gt;var&lt;/span&gt; &lt;span class="nx"&gt;form&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nb"&gt;document&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;querySelector&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;form.rsvp&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;
&lt;span class="k"&gt;if &lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;form&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
  &lt;span class="kd"&gt;var&lt;/span&gt; &lt;span class="nx"&gt;status&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nx"&gt;form&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;querySelector&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;.form-status&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;
  &lt;span class="kd"&gt;var&lt;/span&gt; &lt;span class="nx"&gt;button&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nx"&gt;form&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;querySelector&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;button[type="submit"]&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;
  &lt;span class="kd"&gt;var&lt;/span&gt; &lt;span class="nx"&gt;say&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nf"&gt;function &lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;msg&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt; &lt;span class="k"&gt;if &lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;status&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt; &lt;span class="nx"&gt;status&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;textContent&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nx"&gt;msg&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt; &lt;span class="p"&gt;};&lt;/span&gt;

  &lt;span class="nx"&gt;form&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;addEventListener&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;submit&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="nf"&gt;function &lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;e&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
    &lt;span class="c1"&gt;// Guard: don't send anything while the placeholder ID is still there&lt;/span&gt;
    &lt;span class="k"&gt;if &lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;form&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;getAttribute&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;action&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;).&lt;/span&gt;&lt;span class="nf"&gt;indexOf&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;YOUR_FORM_ID&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt; &lt;span class="o"&gt;!==&lt;/span&gt; &lt;span class="o"&gt;-&lt;/span&gt;&lt;span class="mi"&gt;1&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
      &lt;span class="nx"&gt;e&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;preventDefault&lt;/span&gt;&lt;span class="p"&gt;();&lt;/span&gt;
      &lt;span class="nf"&gt;say&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;Preview mode: add your Formspree form ID to start receiving RSVPs.&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;
      &lt;span class="k"&gt;return&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt;
    &lt;span class="p"&gt;}&lt;/span&gt;
    &lt;span class="k"&gt;if &lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="o"&gt;!&lt;/span&gt;&lt;span class="nb"&gt;window&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;fetch&lt;/span&gt; &lt;span class="o"&gt;||&lt;/span&gt; &lt;span class="o"&gt;!&lt;/span&gt;&lt;span class="nb"&gt;window&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;FormData&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt; &lt;span class="k"&gt;return&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt; &lt;span class="c1"&gt;// very old browser: normal post&lt;/span&gt;
    &lt;span class="nx"&gt;e&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;preventDefault&lt;/span&gt;&lt;span class="p"&gt;();&lt;/span&gt;
    &lt;span class="k"&gt;if &lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;button&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt; &lt;span class="nx"&gt;button&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;disabled&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="kc"&gt;true&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt;
    &lt;span class="nf"&gt;say&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;Sending…&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;

    &lt;span class="nf"&gt;fetch&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;form&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;action&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
      &lt;span class="na"&gt;method&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;POST&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt;
      &lt;span class="na"&gt;body&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="k"&gt;new&lt;/span&gt; &lt;span class="nc"&gt;FormData&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;form&lt;/span&gt;&lt;span class="p"&gt;),&lt;/span&gt;
      &lt;span class="na"&gt;headers&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt; &lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;Accept&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;application/json&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt; &lt;span class="p"&gt;}&lt;/span&gt;
    &lt;span class="p"&gt;})&lt;/span&gt;
      &lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;then&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nf"&gt;function &lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;r&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
        &lt;span class="k"&gt;if &lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;r&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;ok&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt; &lt;span class="nx"&gt;form&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;reset&lt;/span&gt;&lt;span class="p"&gt;();&lt;/span&gt; &lt;span class="nf"&gt;say&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;Thank you! Your RSVP has been sent.&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt; &lt;span class="p"&gt;}&lt;/span&gt;
        &lt;span class="k"&gt;else&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt; &lt;span class="nf"&gt;say&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;Sorry, your RSVP could not be sent. Please try again.&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt; &lt;span class="p"&gt;}&lt;/span&gt;
      &lt;span class="p"&gt;})&lt;/span&gt;
      &lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="k"&gt;catch&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nf"&gt;function &lt;/span&gt;&lt;span class="p"&gt;()&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
        &lt;span class="nf"&gt;say&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;Sorry, your RSVP could not be sent. Please check your connection and try again.&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;
      &lt;span class="p"&gt;})&lt;/span&gt;
      &lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;then&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nf"&gt;function &lt;/span&gt;&lt;span class="p"&gt;()&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt; &lt;span class="k"&gt;if &lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;button&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt; &lt;span class="nx"&gt;button&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;disabled&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="kc"&gt;false&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt; &lt;span class="p"&gt;});&lt;/span&gt;
  &lt;span class="p"&gt;});&lt;/span&gt;
&lt;span class="p"&gt;}&lt;/span&gt;
&lt;/code&gt;&lt;/pre&gt;

&lt;/div&gt;



&lt;p&gt;Why it's written this way:&lt;/p&gt;

&lt;ul&gt;
&lt;li&gt;
&lt;strong&gt;Progressive enhancement:&lt;/strong&gt; if &lt;code&gt;fetch&lt;/code&gt; isn't available we simply &lt;code&gt;return&lt;/code&gt; and let the normal POST happen.&lt;/li&gt;
&lt;li&gt;
&lt;strong&gt;Disable the button while sending&lt;/strong&gt; so nervous guests don't RSVP four times.&lt;/li&gt;
&lt;li&gt;
&lt;strong&gt;The final &lt;code&gt;.then&lt;/code&gt;&lt;/strong&gt; runs after success &lt;em&gt;or&lt;/em&gt; failure, so the button always comes back.&lt;/li&gt;
&lt;li&gt;
&lt;strong&gt;The placeholder guard&lt;/strong&gt; stops you from accidentally testing against a fake endpoint.&lt;/li&gt;
&lt;/ul&gt;

&lt;h2&gt;
  
  
  3. Alternative: Google Forms (responses in a Sheet)
&lt;/h2&gt;

&lt;p&gt;If you'd rather have everything in a spreadsheet, Google Forms works too. You have two options.&lt;/p&gt;

&lt;h3&gt;
  
  
  Option A: just embed it
&lt;/h3&gt;

&lt;p&gt;In Google Forms, click &lt;strong&gt;Send → &lt;code&gt;&amp;lt; &amp;gt;&lt;/code&gt;&lt;/strong&gt; and paste the iframe:&lt;br&gt;
&lt;/p&gt;

&lt;div class="highlight js-code-highlight"&gt;
&lt;pre class="highlight html"&gt;&lt;code&gt;&lt;span class="nt"&gt;&amp;lt;iframe&lt;/span&gt; &lt;span class="na"&gt;src=&lt;/span&gt;&lt;span class="s"&gt;"https://docs.google.com/forms/d/e/YOUR_FORM_KEY/viewform?embedded=true"&lt;/span&gt;
        &lt;span class="na"&gt;width=&lt;/span&gt;&lt;span class="s"&gt;"100%"&lt;/span&gt; &lt;span class="na"&gt;height=&lt;/span&gt;&lt;span class="s"&gt;"900"&lt;/span&gt; &lt;span class="na"&gt;frameborder=&lt;/span&gt;&lt;span class="s"&gt;"0"&lt;/span&gt;&lt;span class="nt"&gt;&amp;gt;&lt;/span&gt;Loading…&lt;span class="nt"&gt;&amp;lt;/iframe&amp;gt;&lt;/span&gt;
&lt;/code&gt;&lt;/pre&gt;

&lt;/div&gt;



&lt;p&gt;Easiest option, but it looks like Google Forms, not your site.&lt;/p&gt;

&lt;h3&gt;
  
  
  Option B: your own HTML, posting to Google Forms
&lt;/h3&gt;

&lt;ol&gt;
&lt;li&gt;Build the form in Google Forms (Name, Attending, Guests, …).&lt;/li&gt;
&lt;li&gt;Click &lt;strong&gt;⋮ → Get pre-filled link&lt;/strong&gt;, type a dummy answer in each field, and copy the link. It looks like:
&lt;/li&gt;
&lt;/ol&gt;

&lt;div class="highlight js-code-highlight"&gt;
&lt;pre class="highlight plaintext"&gt;&lt;code&gt;https://docs.google.com/forms/d/e/YOUR_FORM_KEY/viewform?usp=pp_url&amp;amp;entry.123456=Test&amp;amp;entry.789012=Yes
&lt;/code&gt;&lt;/pre&gt;

&lt;/div&gt;



&lt;ol&gt;
&lt;li&gt;Those &lt;code&gt;entry.NNNN&lt;/code&gt; values are your field names. Change &lt;code&gt;viewform&lt;/code&gt; to &lt;code&gt;formResponse&lt;/code&gt; and use it as the form action:
&lt;/li&gt;
&lt;/ol&gt;

&lt;div class="highlight js-code-highlight"&gt;
&lt;pre class="highlight html"&gt;&lt;code&gt;&lt;span class="nt"&gt;&amp;lt;form&lt;/span&gt; &lt;span class="na"&gt;id=&lt;/span&gt;&lt;span class="s"&gt;"gform"&lt;/span&gt; &lt;span class="na"&gt;action=&lt;/span&gt;&lt;span class="s"&gt;"https://docs.google.com/forms/d/e/YOUR_FORM_KEY/formResponse"&lt;/span&gt;
      &lt;span class="na"&gt;method=&lt;/span&gt;&lt;span class="s"&gt;"POST"&lt;/span&gt; &lt;span class="na"&gt;target=&lt;/span&gt;&lt;span class="s"&gt;"hidden_iframe"&lt;/span&gt;&lt;span class="nt"&gt;&amp;gt;&lt;/span&gt;
  &lt;span class="nt"&gt;&amp;lt;input&lt;/span&gt; &lt;span class="na"&gt;name=&lt;/span&gt;&lt;span class="s"&gt;"entry.123456"&lt;/span&gt; &lt;span class="na"&gt;required&lt;/span&gt; &lt;span class="na"&gt;placeholder=&lt;/span&gt;&lt;span class="s"&gt;"Your name"&lt;/span&gt;&lt;span class="nt"&gt;&amp;gt;&lt;/span&gt;
  &lt;span class="nt"&gt;&amp;lt;select&lt;/span&gt; &lt;span class="na"&gt;name=&lt;/span&gt;&lt;span class="s"&gt;"entry.789012"&lt;/span&gt;&lt;span class="nt"&gt;&amp;gt;&lt;/span&gt;
    &lt;span class="nt"&gt;&amp;lt;option&amp;gt;&lt;/span&gt;Yes&lt;span class="nt"&gt;&amp;lt;/option&amp;gt;&amp;lt;option&amp;gt;&lt;/span&gt;No&lt;span class="nt"&gt;&amp;lt;/option&amp;gt;&lt;/span&gt;  &lt;span class="c"&gt;&amp;lt;!-- must match the form's options exactly --&amp;gt;&lt;/span&gt;
  &lt;span class="nt"&gt;&amp;lt;/select&amp;gt;&lt;/span&gt;
  &lt;span class="nt"&gt;&amp;lt;button&lt;/span&gt; &lt;span class="na"&gt;type=&lt;/span&gt;&lt;span class="s"&gt;"submit"&lt;/span&gt;&lt;span class="nt"&gt;&amp;gt;&lt;/span&gt;Send RSVP&lt;span class="nt"&gt;&amp;lt;/button&amp;gt;&lt;/span&gt;
  &lt;span class="nt"&gt;&amp;lt;p&lt;/span&gt; &lt;span class="na"&gt;id=&lt;/span&gt;&lt;span class="s"&gt;"gstatus"&lt;/span&gt; &lt;span class="na"&gt;role=&lt;/span&gt;&lt;span class="s"&gt;"status"&lt;/span&gt; &lt;span class="na"&gt;aria-live=&lt;/span&gt;&lt;span class="s"&gt;"polite"&lt;/span&gt;&lt;span class="nt"&gt;&amp;gt;&amp;lt;/p&amp;gt;&lt;/span&gt;
&lt;span class="nt"&gt;&amp;lt;/form&amp;gt;&lt;/span&gt;
&lt;span class="nt"&gt;&amp;lt;iframe&lt;/span&gt; &lt;span class="na"&gt;name=&lt;/span&gt;&lt;span class="s"&gt;"hidden_iframe"&lt;/span&gt; &lt;span class="na"&gt;style=&lt;/span&gt;&lt;span class="s"&gt;"display:none"&lt;/span&gt;&lt;span class="nt"&gt;&amp;gt;&amp;lt;/iframe&amp;gt;&lt;/span&gt;

&lt;span class="nt"&gt;&amp;lt;script&amp;gt;&lt;/span&gt;
  &lt;span class="nb"&gt;document&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;getElementById&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;gform&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;).&lt;/span&gt;&lt;span class="nf"&gt;addEventListener&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;submit&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="nf"&gt;function &lt;/span&gt;&lt;span class="p"&gt;()&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
    &lt;span class="nb"&gt;document&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;getElementById&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;gstatus&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;).&lt;/span&gt;&lt;span class="nx"&gt;textContent&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;Thank you! Your RSVP has been sent.&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt;
  &lt;span class="p"&gt;});&lt;/span&gt;
&lt;span class="nt"&gt;&amp;lt;/script&amp;gt;&lt;/span&gt;
&lt;/code&gt;&lt;/pre&gt;

&lt;/div&gt;



&lt;p&gt;Google doesn't allow cross-origin &lt;code&gt;fetch&lt;/code&gt; reads of the response, so we post into a hidden iframe and show the message optimistically. Trade-off: you can't detect failures. Test it, then check the linked Sheet. Choice fields must match the option text exactly, and Google may change this undocumented behaviour, so Option A or Formspree is the safer choice if you want zero surprises.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Bonus:&lt;/strong&gt; the pre-filled link is also handy on its own – you can send each guest a link with their name already filled in (&lt;code&gt;&amp;amp;entry.123456=Aunt%20Rose&lt;/code&gt;).&lt;/p&gt;

&lt;h2&gt;
  
  
  4. A tiny countdown
&lt;/h2&gt;



&lt;div class="highlight js-code-highlight"&gt;
&lt;pre class="highlight html"&gt;&lt;code&gt;&lt;span class="nt"&gt;&amp;lt;div&lt;/span&gt; &lt;span class="na"&gt;class=&lt;/span&gt;&lt;span class="s"&gt;"countdown"&lt;/span&gt; &lt;span class="na"&gt;id=&lt;/span&gt;&lt;span class="s"&gt;"countdown"&lt;/span&gt; &lt;span class="na"&gt;data-date=&lt;/span&gt;&lt;span class="s"&gt;"2027-06-14T15:00:00"&lt;/span&gt;&lt;span class="nt"&gt;&amp;gt;&amp;lt;/div&amp;gt;&lt;/span&gt;
&lt;/code&gt;&lt;/pre&gt;

&lt;/div&gt;





&lt;div class="highlight js-code-highlight"&gt;
&lt;pre class="highlight javascript"&gt;&lt;code&gt;&lt;span class="kd"&gt;var&lt;/span&gt; &lt;span class="nx"&gt;cd&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nb"&gt;document&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;getElementById&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;countdown&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;
&lt;span class="k"&gt;if &lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;cd&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
  &lt;span class="kd"&gt;var&lt;/span&gt; &lt;span class="nx"&gt;target&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="k"&gt;new&lt;/span&gt; &lt;span class="nc"&gt;Date&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;cd&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;getAttribute&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;data-date&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;));&lt;/span&gt;
  &lt;span class="kd"&gt;var&lt;/span&gt; &lt;span class="nx"&gt;unit&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nf"&gt;function &lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;n&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="nx"&gt;one&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="nx"&gt;many&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
    &lt;span class="k"&gt;return&lt;/span&gt; &lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;&amp;lt;div&amp;gt;&amp;lt;b&amp;gt;&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt; &lt;span class="o"&gt;+&lt;/span&gt; &lt;span class="nx"&gt;n&lt;/span&gt; &lt;span class="o"&gt;+&lt;/span&gt; &lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;&amp;lt;/b&amp;gt;&amp;lt;small&amp;gt;&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt; &lt;span class="o"&gt;+&lt;/span&gt; &lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;n&lt;/span&gt; &lt;span class="o"&gt;===&lt;/span&gt; &lt;span class="mi"&gt;1&lt;/span&gt; &lt;span class="p"&gt;?&lt;/span&gt; &lt;span class="nx"&gt;one&lt;/span&gt; &lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="nx"&gt;many&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt; &lt;span class="o"&gt;+&lt;/span&gt; &lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;&amp;lt;/small&amp;gt;&amp;lt;/div&amp;gt;&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt;
  &lt;span class="p"&gt;};&lt;/span&gt;
  &lt;span class="kd"&gt;var&lt;/span&gt; &lt;span class="nx"&gt;tick&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nf"&gt;function &lt;/span&gt;&lt;span class="p"&gt;()&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
    &lt;span class="k"&gt;if &lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nf"&gt;isNaN&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;target&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;getTime&lt;/span&gt;&lt;span class="p"&gt;()))&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt; &lt;span class="nx"&gt;cd&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;textContent&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="dl"&gt;''&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt; &lt;span class="k"&gt;return&lt;/span&gt; &lt;span class="kc"&gt;false&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt; &lt;span class="p"&gt;}&lt;/span&gt; &lt;span class="c1"&gt;// bad date: hide&lt;/span&gt;
    &lt;span class="kd"&gt;var&lt;/span&gt; &lt;span class="nx"&gt;t&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nx"&gt;target&lt;/span&gt; &lt;span class="o"&gt;-&lt;/span&gt; &lt;span class="k"&gt;new&lt;/span&gt; &lt;span class="nc"&gt;Date&lt;/span&gt;&lt;span class="p"&gt;();&lt;/span&gt;
    &lt;span class="k"&gt;if &lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;t&lt;/span&gt; &lt;span class="o"&gt;&amp;lt;=&lt;/span&gt; &lt;span class="mi"&gt;0&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt; &lt;span class="nx"&gt;cd&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;innerHTML&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;&amp;lt;div&amp;gt;&amp;lt;b&amp;gt;&amp;amp;hearts;&amp;lt;/b&amp;gt;&amp;lt;small&amp;gt;Just married&amp;lt;/small&amp;gt;&amp;lt;/div&amp;gt;&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt; &lt;span class="k"&gt;return&lt;/span&gt; &lt;span class="kc"&gt;false&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt; &lt;span class="p"&gt;}&lt;/span&gt;
    &lt;span class="kd"&gt;var&lt;/span&gt; &lt;span class="nx"&gt;d&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nb"&gt;Math&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;floor&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;t&lt;/span&gt; &lt;span class="o"&gt;/&lt;/span&gt; &lt;span class="mi"&gt;864&lt;/span&gt;&lt;span class="nx"&gt;e5&lt;/span&gt;&lt;span class="p"&gt;),&lt;/span&gt; &lt;span class="nx"&gt;h&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nb"&gt;Math&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;floor&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;t&lt;/span&gt; &lt;span class="o"&gt;/&lt;/span&gt; &lt;span class="mi"&gt;36&lt;/span&gt;&lt;span class="nx"&gt;e5&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt; &lt;span class="o"&gt;%&lt;/span&gt; &lt;span class="mi"&gt;24&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="nx"&gt;m&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nb"&gt;Math&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nf"&gt;floor&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;t&lt;/span&gt; &lt;span class="o"&gt;/&lt;/span&gt; &lt;span class="mi"&gt;6&lt;/span&gt;&lt;span class="nx"&gt;e4&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt; &lt;span class="o"&gt;%&lt;/span&gt; &lt;span class="mi"&gt;60&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt;
    &lt;span class="nx"&gt;cd&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;innerHTML&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nf"&gt;unit&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;d&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;Day&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;Days&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt; &lt;span class="o"&gt;+&lt;/span&gt; &lt;span class="nf"&gt;unit&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;h&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;Hour&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;Hours&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt; &lt;span class="o"&gt;+&lt;/span&gt; &lt;span class="nf"&gt;unit&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;m&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;Minute&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="s1"&gt;Minutes&lt;/span&gt;&lt;span class="dl"&gt;'&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;
    &lt;span class="k"&gt;return&lt;/span&gt; &lt;span class="kc"&gt;true&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt;
  &lt;span class="p"&gt;};&lt;/span&gt;
  &lt;span class="k"&gt;if &lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nf"&gt;tick&lt;/span&gt;&lt;span class="p"&gt;())&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt; &lt;span class="kd"&gt;var&lt;/span&gt; &lt;span class="nx"&gt;timer&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nf"&gt;setInterval&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nf"&gt;function &lt;/span&gt;&lt;span class="p"&gt;()&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt; &lt;span class="k"&gt;if &lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="o"&gt;!&lt;/span&gt;&lt;span class="nf"&gt;tick&lt;/span&gt;&lt;span class="p"&gt;())&lt;/span&gt; &lt;span class="nf"&gt;clearInterval&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;timer&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt; &lt;span class="p"&gt;},&lt;/span&gt; &lt;span class="mi"&gt;30000&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt; &lt;span class="p"&gt;}&lt;/span&gt;
&lt;span class="p"&gt;}&lt;/span&gt;
&lt;/code&gt;&lt;/pre&gt;

&lt;/div&gt;



&lt;p&gt;The date lives in a &lt;code&gt;data-&lt;/code&gt; attribute, so non-developers can change it without touching JS. Minutes only (no seconds) means updating every 30 seconds is plenty, and the timer stops itself after the big day. Note the date string has no timezone, so it's interpreted in each visitor's local time – fine for a countdown, but add an offset (e.g. &lt;code&gt;2027-06-14T15:00:00+02:00&lt;/code&gt;) if you want it exact everywhere.&lt;/p&gt;

&lt;h2&gt;
  
  
  5. Deploy
&lt;/h2&gt;

&lt;p&gt;Drag the folder onto Netlify Drop, push it to a GitHub Pages repo, or connect it to Cloudflare Pages. All three have free tiers for static sites. A custom domain is optional and costs extra (you pay the registrar).&lt;/p&gt;

&lt;p&gt;That's it: a static page, a real RSVP flow, no backend, and files you own.&lt;/p&gt;




&lt;p&gt;&lt;em&gt;Disclosure: I made a set of one-page wedding website templates that use exactly this setup (Formspree or Google Forms RSVP, countdown, plain HTML/CSS/JS). They're paid, and they were produced with AI assistance. If you'd rather not build from scratch: &lt;a href="https://itch.io/c/8404812/wedding-website-templates" rel="noopener noreferrer"&gt;Paper &amp;amp; Linen Studio on itch.io&lt;/a&gt;. Everything above works fine without them.&lt;/em&gt;&lt;/p&gt;

</description>
      <category>html</category>
      <category>webdev</category>
      <category>tutorial</category>
      <category>beginners</category>
    </item>
  </channel>
</rss>
