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Result Size: 625 x 571
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<!DOCTYPE html>
<html>
<body>
<div id="myDIV">
  <p id="demo">This is a p element with id="demo" in a div.</p>
</div>
<p>Click the button to change the text of the p element in div.</p>
<button onclick="myFunction()">Try it</button>
<script>
function myFunction() {
  var x = document.getElementById("myDIV");
  x.querySelector("#demo").innerHTML = "Hello World!";
}
</script>
</body>
<!-- Mirrored from www.w3schools.com/jsref/tryit.asp?filename=tryjsref_element_queryselector by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 03:02:20 GMT -->
</html>
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