我想替换DOM中的一个元素。 例如,有一个<a>元素,我想用<span>代替。

我该怎么做呢?


当前回答

通过使用replaceChild():

<html>
<head>
</head>
<body>
  <div>
    <a id="myAnchor" href="http://www.stackoverflow.com">StackOverflow</a>
  </div>
<script type="text/JavaScript">
  var myAnchor = document.getElementById("myAnchor");
  var mySpan = document.createElement("span");
  mySpan.innerHTML = "replaced anchor!";
  myAnchor.parentNode.replaceChild(mySpan, myAnchor);
</script>
</body>
</html>

其他回答

这是最好的方法。父母不需要。只需使用Element。outerHTML =模板;

// Get the current element
var currentNode = document.querySelector('#greeting');

// Replace the element
currentNode.outerHTML =
    '<div id="salutations">' +
        '<h1>Hi, universe!</h1>' +
        '<p>The sun is always shining!</p>' +
    '</div>';
var a = A.parentNode.replaceChild(document.createElement("span"), A);

a是替换后的a元素。

通过使用replaceChild():

<html>
<head>
</head>
<body>
  <div>
    <a id="myAnchor" href="http://www.stackoverflow.com">StackOverflow</a>
  </div>
<script type="text/JavaScript">
  var myAnchor = document.getElementById("myAnchor");
  var mySpan = document.createElement("span");
  mySpan.innerHTML = "replaced anchor!";
  myAnchor.parentNode.replaceChild(mySpan, myAnchor);
</script>
</body>
</html>

考虑到已经提出的选项,最简单的解决方案是不找父母:

var parent = document.createElement("div");
var child = parent.appendChild(document.createElement("a"));
var span = document.createElement("span");

// for IE
if("replaceNode" in child)
  child.replaceNode(span);

// for other browsers
if("replaceWith" in child)
  child.replaceWith(span);

console.log(parent.outerHTML);

替换LI元素的示例

function (element) {
    let li = element.parentElement;
    let ul = li.parentNode;   
    if (li.nextSibling.nodeName === 'LI') {
        let li_replaced = ul.replaceChild(li, li.nextSibling);
        ul.insertBefore(li_replaced, li);
    }
}