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<!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> <p id="demo"></p> <script> var x = document.getElementById("main"); var y = x.getElementsByTagName("p"); document.getElementById("demo").innerHTML = 'The first paragraph (index 0) inside "main" is: ' + y[0].innerHTML; </script> </body> </html>