JQuery获取以元素开头的文本

Question

我有这个代码。

<p>jQuery is free, open source software, dual-licensed under the <span>MIT License</span> or the GNU General Public License, Version 2.</p>
<p><span id="elt">jQuery is a</span> cross-browser <span>JavaScript</span>library designed to simplify the client-side scripting of HTML. <span>It was released in January 2006</span> at BarCamp NYC by John Resig. Used by over 52% of the 10,000 most visited websites, jQuery is the most popular JavaScript library in use <span>today</span>.</p>
<img src="character1.jpg" height="200"/>
<p>jQuery is free, open source software, dual-licensed under the <span>MIT License</span> or the GNU General Public License, Version 2.</p>
<p>...

我希望前500个字符以$(".elt")开头，如下所示：

jQuery is a cross-browser JavaScript library designed to simplify the client-side scripting of HTML.It was released in January 2006 at BarCamp NYC by John Resig. Used by over 52% of the 10,000 most visited websites, jQuery is the most popular JavaScript library in use today.jQuery is free, open source software, dual-licensed under the MIT License or the GNU General Public License, Version 2.

只是文本，去掉所有的html标签。

Answer 1

$('#elt').parent().text().slice(0, 500);

获取文本，取前500个字符

编辑:对不起，请阅读问题而不是代码示例。已修复。

var node = $('#elt').parent();
var text = node.text();

while (text.length < 500) {
    node = node.nextSibling;
    if (node.nodeType === 1) {
        text += node.text();
    } else if (node.nodeType === 3) {
        text += node.nodeValue;
    }
}

text = text.slice(0, 500);