​x
 
<!DOCTYPE html>
<html>
<body>
​
<h3>如何访问 DIV 元素的演示</h3>
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<div id="myDIV">This is a div element.</div>
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<p>点击按钮获取 div 元素的内容。</p>
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<button onclick="myFunction()">试一试</button>
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<p id="demo"></p>
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<script>
function myFunction() {
  var x = document.getElementById("myDIV").innerHTML;
  document.getElementById("demo").innerHTML = x;
}
</script>
​
</body>
</html>
​