如果某些没有标签的子节点，如何更改childNodes的innerHTML？

Question

That is my example of problem

<div onclick="this.childNodes(0).innerHTML='0';">
1<b>2</b>3<b>4</b>5
</div>

as you see, two childnodes (" " and " ") are tagged, others are simple text. The question is how to change innerHTML of tagged and untagged nodes (texts) in sertain div container without touching other nodes/texts?

Answer 1

Essentially, you'll use the data (text) property for text nodes ( nodeType 3) and innerHTML otherwise ( fiddle ):

<div onclick="this.childNodes[0][this.childNodes[0].nodeType === 3 ? 'data' : 'innerHTML'] = '0'">
1<b>2</b>3<b>4</b>5
</div>​

[edit] I'm getting really tired of everyone offering libraries as solutions when all that's required is a simple explanation of a basic concept, eg: text-nodes and element nodes have differing content properties, ie: data and innerHTML .

Answer 2

I wrote a lib called Linguigi . It would be as easy as

new Linguigi(element).eachText(function(text) {
    if(this.parentNode.tagName === 'B') {
        return "BACON";
    }
});

which turns the text of all text nodes inside b-tags to "BACON". You get the original content as "text" parameter and could transform that.

http://jsfiddle.net/Kz2jX/

BTW: You should get rid of the inline event handling ( onclick attribute)

Answer 3

You can cycle through each of the nodes recursively, checking their nodeType property in turn and updating the nodeValue property with '0' if the node is a text node (indicated by nodeType == 3 ).

Assuming you have this HTML :

<div onclick="doReplace(this)">
    1<b>2</b>3<b>4</b>5
</div>

You can then write a simple replace function that calls itself recursively, like so:

window.doReplace = function (rootNode) {
    var children = rootNode.childNodes;
    for(var i = 0; i < children.length; i++) {
        var aChild = children[i];
        if(aChild.nodeType == 3) {
            aChild.nodeValue = '0';
        }
        else {
            doReplace(aChild);
        }
    }
}

A working fiddle can be found here: http://jsfiddle.net/p9YCn/1/