IDs - CSS vs javascript

by jshacker

HTML

<div id="id1">#id1 JS picks first #id</div>
<div id="id1">#id1 CSS applies to all elements that have  #id</div>
<div id="id1">#id1 example</div>
<div id="id1">#id1 example</div>

CSS

#id1 {
  font-size: 1.5rem;
  color: black;
}

JavaScript

/* $("#ided").css("color", "red").css("font-size", "2rem") */

document.getElementById("id1").style.color="blue";