Element querySelectorAll() Method - Get all <p> elements in a <div> with class="example", and set the background of the first <p> element: - Javascript DOM

Javascript examples for DOM:Element querySelectorAll

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Description

Element querySelectorAll() Method - Get all <p> elements in a <div> with class="example", and set the background of the first <p> element:

Demo Code

ResultView the demo in separate window 

<!DOCTYPE html>
<html>
<head>
<style>
#myDIV {/*from   w  w w.j  av  a 2s  .  c  o  m*/
    border: 1px solid black;
    margin: 5px;
}
</style>
</head>
<body>

<div id="myDIV">
  <h2 class="example">A heading with class="example" in div</h2>
  <p class="example">A paragraph with class="example" in div.</p>
  <p class="example">Another paragraph with class="example" in div.</p>
</div>

<button onclick="myFunction()">Test</button>

<script>
function myFunction() {
    var x = document.getElementById("myDIV").querySelectorAll("p.example");
    x[0].style.backgroundColor = "red";
}
</script>

</body>
</html>

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