With the basic knowledge of Javascript & jQuery, I decided to step in to ES6. What excites me is the Module where I can import & export multiple JS files. Currently its hard to manage when there are lot of functions in one JS file which I used to do using jQuery.
Since all modern browser now supports ES6, I decided not to compile and see how it runs in the browser.
I started with a basic HTML
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<h1>Hi</h1>
<script src="./main.js" type="module"></script>
</body>
</html>
Then I created 3 modules and one main.js to include in my HTML Page.
a.js
import { stuff } from "./b.js";
import { randhex, validURL } from "./c.js";
stuff("It works");
console.log(import.meta);
console.log(validURL("google.com/"));
const goolink = validURL("google.com/");
console.log(randhex(5));
export { validURL, goolink };
b.js
const stuff = function (text) {
console.log(text);
};
export { stuff };
c.js
const validURL = function (str) {
var pattern = new RegExp(
"^(https?:\\/\\/)?" + // protocol
"((([a-z\\d]([a-z\\d-]*[a-z\\d])*)\\.)+[a-z]{2,}|" + // domain name
"((\\d{1,3}\\.){3}\\d{1,3}))" + // OR ip (v4) address
"(\\:\\d+)?(\\/[-a-z\\d%_.~+]*)*" + // port and path
"(\\?[;&a-z\\d%_.~+=-]*)?" + // query string
"(\\#[-a-z\\d_]*)?$",
"i"
); // fragment locator
return !!pattern.test(str);
};
const randhex = function (len) {
var maxlen = 8,
min = Math.pow(16, Math.min(len, maxlen) - 1),
max = Math.pow(16, Math.min(len, maxlen)) - 1,
n = Math.floor(Math.random() * (max - min + 1)) + min,
r = n.toString(16);
while (r.length < len) {
r = r + randHex(len - maxlen);
}
return r;
};
export { randhex, validURL };
main.js
import { goolink } from "./a.js";
if (goolink) {
console.log("yaay");
}
Result
Here's what I got in console.log It works and runs in the browser without any issues. No compilers, No Babel, No Webpack nothing. Just pure Javascript.
It works
> Object
true
yaay
What I learned
- ES6 Modules will only work on a Server like
localhostorweb server. It won't work viafile:/// - While adding
<script>tag to HTML, we must addtype="module"attribute. Otherwise the module won't work.
Your Suggestions
Do you have any suggestions on how to improve my code? or any other stuff I should be aware of? Let me know in the comments.
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