InsertAfter javascript 1
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<!DOCTYPE html> <html> <body> <ul> <li>HTML</li> <li id="menu">CSS</li> <li>jQuery</li> </ul> <p> <input type="button" value="Chèn" onclick="insertAfterMenu()"/> </p> <script> function insertAfter(newNode, existingNode) { existingNode.parentNode.insertBefore(newNode, existingNode.nextSibling); } function insertAfterMenu(){ let menu = document.getElementById('menu'); let li = document.createElement('li'); li.textContent = "Javascript"; insertAfter(li, menu); } </script> </body> </html>
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