jquery 遍历 end()
end()恢复最近一次破坏性对匹配元素集合的操作，返回到之前的匹配元素集合状态。返回匹配元素集合
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><script src="http://code.jquery.com/jquery-latest.js"></script> <script>$(document).ready(function(){ jQuery.fn.showTags = function (n) { var tags = this.map(function () { return this.tagName; }) .get().join(", "); $("b:eq(" + n + ")").text(tags); return this; }; $("p").showTags(0) .find("span") .showTags(1) .css("background", "yellow") .end() .showTags(2) .css("font-style", "italic");});</script><style>p, div { margin:1px; padding:1px; font-weight:bold; font-size:16px; }div { color:blue; }b { color:red; }</style></head><body><p> Hi there <span>how</span> are you <span>doing</span>?</p><p> This <span>span</span> is one of several <span>spans</span> in this <span>sentence</span>.</p><div> Tags in jQuery object initially: <b></b></div><div> Tags in jQuery object after find: <b></b></div><div> Tags in jQuery object after end: <b></b></div></body></html>
end()
将返回到执行find("span")操作之前的匹配元素集合状态
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