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<!DOCTYPE html>
<html>
<body>
<h1>Element 对象</h1>
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<h2>innerText、innerHTML 与 textContent 的区别</h2>
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<p id="myP">   This element has extra spacing   and contains <span>a span element</span>.</p>
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<button onclick="getinnerHTML()">获取 innerHTML</button>
<button onclick="getinnerText()">获取 innerText</button>
<button onclick="gettextContent()">获取 textContent</button>
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<pre id="demo"></pre>
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<p>IE 9 及更早版本不支持 innerText 属性。</p>
<p>IE 8 及更早版本不支持 textContent 属性。</p>
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<script>
function getinnerText() {
  let text = document.getElementById("myP").innerText;
  document.getElementById("demo").innerText = text;
}
​
function getinnerHTML() {
  let text = document.getElementById("myP").innerHTML;
  document.getElementById("demo").innerText = text;
}
​
function gettextContent() {
  let text = document.getElementById("myP").textContent;
  document.getElementById("demo").innerText = text;
}
</script>
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</body>
</html>
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