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<!DOCTYPE html>
<html>
<head>
<style>
#myDIV {
  border: 1px solid black;
}
</style>
</head>
<body>
​
<div id="myDIV">
  <h2>A h2 element in div</h2>
  <h3>A h3 element in div</h3>
</div>
​
<script>
var x = document.getElementById("myDIV");
x.querySelector("h2, h3").style.backgroundColor = "red";
</script>
​
</body>
​
<!-- Mirrored from www.w3schools.com/jsref/tryit.asp?filename=tryjsref_element_queryselector_multiple by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 03:02:20 GMT -->
</html>
​
​
​
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