Tryit Editor v1.7

Source Code:

Result:

<!DOCTYPE html>
<html>
<body>

<p>Hello World!</p>

<div id="main">
<p>The DOM is very useful.</p>
<p>This example demonstrates the <b>getElementsByTagName</b> method</p>
</div>

<script>
x=document.getElementById("main").getElementsByTagName("p");
document.write("First paragraph inside the div: " + x[0].innerHTML);
</script>

</body>
</html>

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Source Code:	Result:
<!DOCTYPE html> <html> <body> <p>Hello World!</p> <div id="main"> <p>The DOM is very useful.</p> <p>This example demonstrates the <b>getElementsByTagName</b> method</p> </div> <script> x=document.getElementById("main").getElementsByTagName("p"); document.write("First paragraph inside the div: " + x[0].innerHTML); </script> </body> </html>
Edit the code above and click "Submit Code" to see the result.	W3Schools.com - Try it yourself