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JavaScript JavaScript and the DOM (Retiring) Getting a Handle on the DOM Selecting by Id

Vic Mercier
Vic Mercier
3,276 Points
Posted by Vic Mercier
Vic Mercier
3,276 Points

id

We could select multiple element on a page using document.getElementById method?

js/app.js 
const my = document.getElementById("lol");
my.style.color = "red";
index.html 
<!DOCTYPE html>
<html>
  <h1 id  = "lol">Sébastien</h1>
  <h2 id  = "lol">Victor</h2>
  <script src= "js/app.js"></script>
</html>

1 Answer

valeriabrigatti
valeriabrigatti
20,820 Points
valeriabrigatti
valeriabrigatti
20,820 Points

First things first, in HTML IDs values should be unique in every single page. You cannot have both your h1 and h2 with an ID of "lol". You should change that on the h2 (or the h1) or use a class instead.

So, you have two options:

  1. <h1 id="lol">Sébastien</h1> <h2 id="rotfl">Victor</h2>
  2. <h1 class="lol">Sébastien</h1> <h2 class="lol">Victor</h2>

Thus, in JavaScript, you can only select one element on a page with getElementById