isSameNode

isSameNode method compares objects that you have obtained from different queries.

 
<!DOCTYPE HTML> 
<html> 
    <head> 
        <title>Example</title> 
    </head> 
    <body> 
        <table> 
            <tbody id="SurveysBody"> 
                <tr id="myRow"><td>A</td><td>B</td></tr> 
            </tbody> 
        </table> 
        <pre id="results"></pre> 
        <script> 
            var elemByID = document.getElementById("myRow"); 
            var elemByPos = document.getElementById("SurveysBody").getElementsByTagName("tr")[0]; 
            if (elemByID.isSameNode(elemByPos)) { 
                document.getElementById("results").innerHTML = "Objects are the same"; 
            } 
        </script> 
    </body> 
</html>

Click to view the demo

The following code compares two rows in a table.

 
<!DOCTYPE HTML> 
<html> 
    <head> 
        <title>Example</title> 

    </head> 
    <body> 
        <table> 
            <tbody> 
                <tr class="myRow"><td>Plum</td><td>Purple</td></tr> 
            </tbody> 
        </table> 
        <table> 
            <tbody> 
                <tr class="myRow"><td>Plum</td><td>Purple</td></tr> 
            </tbody> 
        </table> 
        <pre id="results"></pre> 
        <script> 
            var elems = document.getElementsByClassName("myRow"); 
            if (elems[0].isEqualNode(elems[1])) { 
                document.getElementById("results").innerHTML = "Elements are equal"; 
            } else { 
                document.getElementById("results").innerHTML = "Elements are NOT equal"; 
            } 
        </script> 
    </body> 
</html>

Click to view the demo