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 |
| HTML accesskey Attribute | HTML Global Attributes |
| HTML class Attribute | HTML Global Attributes |
| HTML contenteditable Attribute | HTML Global Attributes |
| HTML data-* Attributes | HTML Global Attributes |
| HTML dir Attribute | HTML Global Attributes |
| HTML draggable Attribute | HTML Global Attributes |
| HTML enterkeyhint Attribute | HTML Global Attributes |
| HTML hidden Attribute | HTML Global Attributes |
| HTML id Attribute | HTML Global Attributes |
| HTML inert Attribute | HTML Global Attributes |
| HTML inputmode Attribute | HTML Global Attributes |
| HTML lang Attribute | HTML Global Attributes |
| HTML popover Attribute | HTML Global Attributes |
| HTML spellcheck Attribute | HTML Global Attributes |
| HTML style Attribute | HTML Global Attributes |
| HTML tabindex Attribute | HTML Global Attributes |
| HTML title Attribute | HTML Global Attributes |
| HTML translate Attribute | HTML Global Attributes |
| HTML Global Attributes | HTML Global Attributes |
|
Type
: |
html |
|
Category
: |
Web Tutorial |
|
Sub Category
: |
HTML Global Attributes |
|
Uploaded by
: |
Admin |