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<!DOCTYPE html> <html> <body> <h1>The Element Object</h1> <h2>The compareDocumentPosition() Method</h2> <p id="p1">This is a paragraph</p> <p id="p2">This is another paragraph</p> <p>The position of the two paragraphs is:</p> <p id="demo"></p> <p> <strong>Possible values:</strong><br> 1: The two nodes do not belong to the same document.<br> 2: p1 is positioned after p2.<br> 4: p1 is positioned before p2.<br> 8: p1 is positioned inside p2.<br> 16: p2 is positioned inside p1.<br> 32: The two nodes are attributes on the same element.</p> <p>The return value can also be a combination of values. Return value 20 means that p2 is inside p1 (16) AND p1 is positioned before p2 (4).</p> <script> const p1 = document.getElementById("p1").lastChild; const p2 = document.getElementById("p2").lastChild; let position = p1.compareDocumentPosition(p2); document.getElementById("demo").innerHTML = position; </script> </body> </html>
