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<!DOCTYPE html> <html> <body> <p>单击按钮获取 div 的第一个子节点的节点名称、节点类型和节点值。</p> <div id="myDIV">这是一个 DIV 元素。</div> <br> <button onclick="myFunction()">试一试</button> <p id="demo"></p> <script> function myFunction() { var x = document.getElementById("myDIV").firstChild; var txt = ""; txt += "The node name: " + x.nodeName + "<br>"; txt += "The node value: " + x.nodeValue + "<br>"; txt += "The node type: " + x.nodeType; document.getElementById("demo").innerHTML = txt; } </script> </body> </html>