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<!DOCTYPE html> <html> <body> <p>Click the buttons to compare the <strong>first item</strong> in two of the lists.</p> <button onclick="myFunction('myList1','myList2')">Compare List 1 and 2</button> <button onclick="myFunction('myList1','myList3')">Compare List 1 and 3</button> <br><br> List 1: <ul id="myList1"><li>Water</li><li>Milk</li></ul> List 2: <ul id="myList2"><li>Coffee</li><li>Tea</li></ul> List 3: <ul id="myList3"><li>Water</li><li>Fire</li></ul> <p id="demo"></p> <script> function myFunction(x,y) { var item1 = document.getElementById(x).firstChild; var item2 = document.getElementById(y).firstChild; var x = item1.isEqualNode(item2); document.getElementById("demo").innerHTML = x; } </script> </body> </html>
