How to use JavaScript to add a yellow background color to the first element with class="example" (index 0)
First div element with class="example". Second div element with class="example". Click the button to add a yellow background color to the first div element with class="example" (index 0).
index.html
Example:
HTML
<!DOCTYPE html>
<html>
<body>
<div class="example">First div element with class="example".</div>
<div class="example">Second div element with class="example".</div>
<p>Click the button to add a yellow background color to the first div element with class="example" (index 0).</p>
<button onclick="myFunction()">Try it</button>
<script>
function myFunction() {
let x = document.getElementsByClassName("example");
x[0].style.backgroundColor = "yellow";
}
</script>
</body>
</html>
Output should be:
| How to Use of the class attribute in an HTML document - | HTML Global Attributes |
| How to add Add multiple classes to one HTML element | HTML Global Attributes |
| How to use JavaScript to add a yellow background color to the first element with class="example" (index 0) | HTML Global Attributes |
| How to use JavaScript to add the "mystyle" class to an element with id="myDIV" | HTML Global Attributes |
Type: | Html |
Category: | Web Tutorial |
Sub Category: | HTML Global Attributes |
Uploaded by: | Admin |