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Result Size: 625 x 571
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<!DOCTYPE html>
<html>
<head>
<style>
div {
  border: 1px solid black;
  margin: 5px;
}
</style>
</head>
<body>
​
<div id="myDIV">
  <p>A p element in div.</p>
  <p>Another p element in div.</p>
  <p>A third p element in div.</p>
</div>
​
<p>Click the button to find out how many p elements there are inside the div element.</p>
​
<button onclick="myFunction()">Try it</button>
​
<p id="demo"></p>
​
<script>
function myFunction() {
  var x = document.getElementById("myDIV").getElementsByTagName("P");
  document.getElementById("demo").innerHTML = x.length;
}
</script>
​
</body>
​
</html>
​
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