I'm geting this Error while debugging in console like Uncaught TypeError: Cannot set properties of null (setting 'textContent')

mahimahi — Tue, 13 Dec 2022 07:03:46 +0000

<!DOCTYPE html>
<html>
  <head>
    <link rel="stylesheet" href="bomb.css" >
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" integrity="sha384-JcKb8q3iqJ61gNV9KGb8thSsNjpSL0n8PARn9HuZOnIxN0hoP+VmmDGMN5t9UJ0Z" crossorigin="anonymous" />
    <script src="https://code.jquery.com/jquery-3.5.1.slim.min.js" integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj" crossorigin="anonymous"></script>
    <script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.1/dist/umd/popper.min.js" integrity="sha384-9/reFTGAW83EW2RDu2S0VKaIzap3H66lZH81PoYlFhbGU+6BZp6G7niu735Sk7lN" crossorigin="anonymous"></script>
    <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js" integrity="sha384-B4gt1jrGC7Jh4AgTPSdUtOBvfO8shuf57BaghqFfPlYxofvL8/KUEfYiJOMMV+rV" crossorigin="anonymous"></script>
  </head>
  <body>
    <script src='bomb.js'></script>
    <div class="timer-container">

      <input type="text" class="user-input" id="defuser" />
      <br />
      <img
        src="https://d1tgh8fmlzexmh.cloudfront.net/ccbp-dynamic-webapps/time-bomb-img.png"
        class="bomb-image"
      />
      <p class="timer-display" id="timer">10</p>
    </div>
  </body>
</html>

CSS content:

@import url("https://fonts.googleapis.com/css2?family=Bree+Serif&family=Monoton&family=Open+Sans:wght@400;700&family=Playfair+Display+SC:wght@400;700&family=Playfair+Display:wght@400;700&family=Roboto:wght@400;700&family=Source+Sans+Pro:wght@400;700&family=Work+Sans:wght@400;700&display=swap");

.timer-container {
  background-color: #00bafc;
  padding: 20px;
  text-align: center;
  height: 100vh;
}

.timer-display {
  font-size: 50px;
  color: white;
}

.user-input {
  border-width: 0px;
  border-radius: 4px;
  padding: 6px;
  text-align: center;
}

.bomb-image {
  margin-top: 40px;
  width: 150px;
}

JS content:

let timerEle = document.getElementById('timer');
let countdown = 10;
let intervalId = setInterval(function(){
    countdown = countdown - 1;
    timerEle.textContent = countdown;
},1000);

Can someone help me on this.

DEV Community: mahimahi

I'm geting this Error while debugging in console like Uncaught TypeError: Cannot set properties of null (setting 'textContent')