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<!DOCTYPE html>
<html>
<head>
<script>
function getElements() {
  var x = document.getElementsByName("x");
  document.getElementById("demo").innerHTML = x.length;
}
</script>
</head>
<body>
​
<p>
Cats: <input name="x" type="radio" value="Cats">
Dogs: <input name="x" type="radio" value="Dogs">
</p>
​
<p>
<input type="button" onclick="getElements()" value="How many elements named x?">
</p>
​
<p id="demo"></p>
​
</body>
​
<!-- Mirrored from www.w3schools.com/js/tryit.asp?filename=tryjs_doc_getelementsbyname by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 02:28:19 GMT -->
</html>
​
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