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<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>javascript previousSibling and nextSibling properties</title> </head> <body> <div id="main"> <h1 id="title">My Heading</h1> <p id="hint"><span>This is some text.</span></p><hr> </div> <script> var title = document.getElementById("title"); alert(title.previousSibling.nodeName); // Outputs: #text var hint = document.getElementById("hint"); alert(hint.nextSibling.nodeName); // Outputs: HR </script> </body> </html>