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<!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 change the text of the first div element with class="example" (index 0).</p>
​
<button onclick="myFunction()">Try it</button>
​
<p><strong>Note:</strong> The getElementsByClassName() method is not supported in Internet Explorer 8 and earlier versions.</p>
​
<script>
function myFunction() {
  var x = document.getElementsByClassName("example");
  x[0].innerHTML = "Hello World!";
}
</script>
​
</body>
​
<!-- Mirrored from www.w3schools.com/jsref/tryit.asp?filename=tryjsref_document_getelementsbyclassname by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 03:01:42 GMT -->
</html>
​
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