改变iframe中src属性 - 在线编辑器

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>蜜蜂教程(mifengjc.com)</title>
  <script>
    function changeSrc() {
      document.getElementById("myframe").src = "http://www.baidu.com";
    }
  </script>
</head>
<body>

  <iframe id="myframe" src="https://www.mifengjc.com">
<p>你的浏览器不支持iframes。</p>
</iframe>
  <br><br>
  <input type="button" onclick="changeSrc()" value="修改源链接">

</body>
</html>
​x
 
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>蜜蜂教程(mifengjc.com)</title>
  <script>
    function changeSrc() {
      document.getElementById("myframe").src = "http://www.baidu.com";
    }
  </script>
</head>
<body>
​
  <iframe id="myframe" src="https://www.mifengjc.com">
<p>你的浏览器不支持iframes。</p>
</iframe>
  <br><br>
  <input type="button" onclick="changeSrc()" value="修改源链接">
​
</body>
</html>