Equivalent of innerHTML for text [duplicate]

问题

Possible Duplicate:
How does jQuery’s .text() work, internally?

I'm looking for the text equivalent of innerHTML, i.e.

<p>Hello, <i>World!</i></p>

then innerText(p) should return Hello, World!.

Note: I'm aware of jQuery's text() function. I want to know how it is implemented so I can do special handling on some nodes, like inserting extra white space.

回答1:

how about this?

var getInnerText = function (element) {
    var nodes = element.childNodes,
        i = 0,
        len = nodes.length,
        text = '';
    for (; i < len; i++) {
        if (nodes[i].nodeType === 3 || nodes[i].nodeType === 4) {
            // 3 means text node, 4 means cdata
            text += nodes[i].nodeValue;
        } else {
            text += getInnerText(nodes[i]);
        }
    }
    return text;
};

then: var innerText = getInnerText(myElement);

jsfiddle

回答2:

Here is the source for getText(): Taken from question: How does jQuery’s .text() work, internally?

// Utility function for retreiving the text value of an array of DOM nodes
Sizzle.getText = function( elems ) {
    var ret = "", elem;

    for ( var i = 0; elems[i]; i++ ) {
        elem = elems[i];

        // Get the text from text nodes and CDATA nodes
        if ( elem.nodeType === 3 || elem.nodeType === 4 ) {
            ret += elem.nodeValue;

        // Traverse everything else, except comment nodes
        } else if ( elem.nodeType !== 8 ) {
            ret += Sizzle.getText( elem.childNodes );
        }
    }

    return ret;
};

回答3:

use innerText property instead of innetHTML.

Example...

<html>
<body>
<p id="myP">Sample Text inside a <b>p</b> element <a href="#"> this is a link </a></p>
<button onclick="alert(myP.innerHTML);">InnerHTML</button>
<button onclick="alert(myP.innerText);">InnerText</button>
</body>
</html>

来源：https://stackoverflow.com/questions/12895152/equivalent-of-innerhtml-for-text

标签

javascript

dom

textnode