IE 8: remove node keep children

问题

I am trying to remove a node from the dom tree using javascript while keeping it's children. I tested the 3 approaches shown below and they work fine in Firefox but do not in IE 8 (see example below).

function removeNodeKeepChildren(node){
    // approach 1
    jQuery(node.parentNode).children().map(function (index) {
        jQuery(this).replaceWith(jQuery(this).contents());
    });

    // approach 2
    // doesn't work with content() either
    jQuery(node.parentNode).html(jQuery(node).html());

    // approach 3
    var childfragment = document.createDocumentFragment();
    for(var i=0; i<node.childNodes.length;i++){
            childfragment.appendChild((node.childNodes[i]).cloneNode());
    }
    node.parentNode.replaceChild(childfragment,node);
}

Example input node:

<span class="A1">
    start text
    <span class="F">
        bold text
    </span>
    end text
</span>

what it should result in:

    start text
    <span class="F">
        bold text
    </span>
    end text

What IE 8 does:

    start text
    <span class="F">
    </span>
    end text

As you can see IE ignores/removes nested children.

I'd appreciate any help :)

回答1:

It should be easy to do like this:

function removeKeepChildren(node) {
    var $node = $(node);
    $node.contents().each(function() {
        $(this).insertBefore($node);
    });
    $node.remove();
}

See it in action.

回答2:

Use unwrap(), that's what it's intended for.

<span class="A1">
    start text
    <span class="F">
        bold text
    </span>
    end text
</span>
<script>
  jQuery(function($){$('.F').unwrap();});
</script>

回答3:

@Jon's approach, sans iteration:

function removeKeepChildren(node) {
    var $node = $(node);
    var contents = $node.contents();
    $node.replaceWith(contents);
}

See it in action.

@Dr.Molle's answer should be the accepted one.

回答4:

Next is most simplest and fastest native javascript code:

function removeNodeKeepChildren(node) {
  if (!node.parentElement) return;
  while(node.firstChild)
  {
    node.parentElement.insertBefore(node.firstChild, node);
  }
  node.parentElement.removeChild(node);
}

http://jsfiddle.net/N3J7K/

来源：https://stackoverflow.com/questions/12561591/ie-8-remove-node-keep-children

标签

javascript

jquery

dom

internet-explorer-8