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<!DOCTYPE html> <html> <body> <h1>The Element Object</h1> <h2>The normalize() Method</h2> <button onclick="addTextNode()">Add Text</button> <button onclick="normPara()">Normalize</button> <p id="demo">Click one buttons to add text to this paragraph, click the other button to normalize the paragraph.</p> <p>The paragraph above has <b><span id="cc">1</span></b> child node(s).</p> <script> function addTextNode() { const node = document.createTextNode(" Click again."); const element = document.getElementById("demo"); element.appendChild(node); countNodes(element); } function normPara() { const element = document.getElementById("demo"); element.normalize(); countNodes(element); } function countNodes(element) { const span = document.getElementById("cc"); span.innerHTML = element.childNodes.length; } </script> </body> </html>
