代码示例:(标识:jsck_element_innerhtml_1)
<!DOCTYPE html>
<html>
<body>

<h1>Element 对象</h1>

<h2>innerHTML 属性</h2>

<p id="demo" onclick="myFunction()">单击我可更改我的 HTML 内容 (innerHTML)。</p>

<script>
function myFunction() {
  document.getElementById("demo").innerHTML = "I have changed!";
}
</script>

</body>
</html>
运行结果: