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<!DOCTYPE html>
<html>
<body>
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<h2>JavaScript HTML DOM</h2>
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<div id="main">
<p>Finding HTML Elements by Tag Name</p>
<p>This example demonstrates the <b>getElementsByTagName</b> method.</p>
</div>
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<p id="demo"></p>
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<script>
const x = document.getElementById("main");
const y = x.getElementsByTagName("p");
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document.getElementById("demo").innerHTML = 
'The first paragraph (index 0) inside "main" is: ' + y[0].innerHTML;
​
</script>
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</body>
</html>
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