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jQuery - Selectors - lastChild抉择最后一个子元素

2012-11-07 
jQuery - Selectors - lastChild选择最后一个子元素Selectors/lastChildFrom jQuery JavaScript Library:l

jQuery - Selectors - lastChild选择最后一个子元素


Selectors/lastChild

From jQuery JavaScript Library

:last-child
  • OverviewMatches all elements that are the last child of their parent.While?:last?matches only a single element, this matches more then one: One for each parent.
    • Demo

      Finds the last span in each matched div and adds some css plus a hover state.

      $("div span:last-child").css({color:"red", fontSize:"80%"}).hover(function () {$(this).addClass("solast");}, function () {$(this).removeClass("solast");});

        View Source
        <!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>$(document).ready(function(){$("div span:last-child").css({color:"red", fontSize:"80%"}).hover(function () {$(this).addClass("solast");}, function () {$(this).removeClass("solast");});});</script><style>span.solast { text-decoration:line-through; }</style></head><body><div><span>John,</span><span>Karl,</span><span>Brandon,</span><span>Sam</span></div><div><span>Glen,</span><span>Tane,</span><span>Ralph,</span><span>David</span></div></body></html>

        [jQuery - Selectors - lastChild选择最后一个子元素 - 文档]
        http://docs.jquery.com/Selectors/lastChild?

        [jQuery - 官方网站]http://jquery.com/

        [jQuery - download下载]当前版本, http://docs.jquery.com/Release:jQuery_1.3.1?
        下载列表, http://docs.jquery.com/Downloading_jQuery
        最新代码, http://code.jquery.com/nightlies/jquery-nightly.js

        [jQuery - 相关论坛]http://groups.google.com/group/jquery-en
        http://WebDev.board.newsmth.net/
        http://WebGeeks.board.newsmth.net/
        http://bbs.pku.edu.cn/, homepage看版
        http://forum.csdn.net/SList/JavaScript/

        [jQuery - 关键词]jQuery

        [jQuery - 文档]http://docs.jquery.com/Main_Page

        [jQuery - Core核心]each迭代, http://docs.jquery.com/Core/each
        jQuery, http://docs.jquery.com/Core/jQuery

        [jQuery - Ajax]jQuery的Ajax文档, http://docs.jquery.com/Ajax/jQuery.ajax
        jQuery的Ajax选项,http://docs.jquery.com/Ajax/jQuery.ajax#options
        dataType选项,设置返回值类型
        timeout选项,用于设置超时
        与PHP集成可以使用json_encode返回结果, http://www.php.net/manual/zh/function.json-encode.php

        readyState获取请求操作的当前状态, http://msdn2.microsoft.com/en-us/library/ms534361.aspx

        [jQuery - 特效]

        jQuery淡入特效,http://docs.jquery.com/Effects/fadeIn

        [jQuery - Selectors选择器]表单元素选择器, http://docs.jquery.com/DOM/Traversing/Selectors#Form_Selectors
        属性相等选择器,http://docs.jquery.com/Selectors/attributeEquals
        checked选中, http://docs.jquery.com/Selectors/checked

        :input匹配所有input, textarea, select和button元素, http://docs.jquery.com/Selectors/input

        选择器在选择body中出现的title标记时,会出现和预期不同的效果。

        element按指定名称匹配所有元素, http://docs.jquery.com/Selectors/element

        lastChild选择最后一个子元素, http://docs.jquery.com/Selectors/lastChild

        ?

        [jQuery - Attributes属性]

        val获取第一个匹配元素value属性的内容, http://docs.jquery.com/Attributes/val

        [jQuery - 常用函数]attr访问自定义属性,减少javascript脚本中代码和数据的耦合
        filter, 用于在集合中过滤元素

        [jQuery - Events事件]hover, http://docs.jquery.com/Events/hover
        submit提交, http://docs.jquery.com/Events/submit

        focus响应每个匹配元素的焦点事件, http://docs.jquery.com/Events/focus

        click单击, 触发每个匹配元素的单击事件, 绑定函数到每个匹配元素的单击事件, http://docs.jquery.com/Events/click

        [jQuery - Manipulation操作]

        after在每个匹配的元素之后插入内容, http://docs.jquery.com/Manipulation/after

        [jQuery - Traversing遍历器]filter过滤, http://docs.jquery.com/Traversing/filter
        find查找, http://docs.jquery.com/Traversing/find

        [jQuery - Tutorials教程]Introducing $(document).ready(), http://docs.jquery.com/Tutorials:Introducing_%24%28document%29.ready%28%29

        [jQuery - plugins插件]Easing动画, http://jquery.com/plugins/project/easing
        jCarouseLite, 走马灯效果, http://jquery.com/plugins/project/jCarouselLite
        tableFilter, 表过滤器, http://jquery.com/plugins/project/tableFilter
        Rounded Corner圆角矩形, http://docs.jquery.com/Tutorials:Rounded_Corners#Rounded_Corners_Without_Images

        Jeditable原位置编辑器插件, http://plugins.jquery.com/project/jeditable

        Cookie, http://plugins.jquery.com/project/Cookie

        [jQuery - Utilities实用工具]trim去掉字符串前后的空格, http://docs.jquery.com/Utilities/jQuery.trim

        [jQuery - UI]UI, http://docs.jquery.com/UI
        UI/Theming, http://docs.jquery.com/UI/Theming

        [jQuery - 参考资料]http://www.json.org/,?http://www.json.org/json.js

        JScript (Windows Script Technologies):, http://msdn2.microsoft.com/en-us/library/hbxc2t98.aspx

        prototype Property (JScript 5.6):, http://msdn2.microsoft.com/en-us/library/f5s9ycex.aspx

        parseInt Method (JScript 5.6):, http://msdn2.microsoft.com/en-us/library/x53yedee.aspx

        toString Method (JScript 5.6):, http://msdn2.microsoft.com/en-us/library/k6xhc6yc.aspx

        HTTP Status Codes (Windows):, http://msdn2.microsoft.com/en-us/library/Aa384325.aspx

        HTML+TIME:, http://msdn2.microsoft.com/en-us/library/ms533112.aspx

        HTA:APPLICATION对象, http://msdn2.microsoft.com/en-us/library/ms536495.aspx

        About Cross-Frame Scripting and Security:关于跨框架脚本和安全, http://msdn2.microsoft.com/en-us/library/ms533028.aspx

        How to Build Tables Dynamically:如何动态构建表格, http://msdn2.microsoft.com/en-us/library/ms532998.aspx

        Filter Property (Tabular Data Control): - Filter属性(表格数据控件), http://msdn2.microsoft.com/en-us/library/ms531364.aspx

        close Method (window):, http://msdn2.microsoft.com/en-us/library/ms536367.aspx

        ECMA标准下载, http://www.ecma-international.org/publications/standards/Ecma-262.htm

        parseInt Method (JScript 5.6): - IE标准, http://msdn2.microsoft.com/en-us/library/x53yedee.aspx

        complete Property (IMG, INPUT, INPUT type=image):, http://msdn2.microsoft.com/en-us/library/ms533688.aspx

        fireEvent Method (A, ABBR, ACRONYM, ...):, http://msdn2.microsoft.com/en-us/library/ms536423.aspx

        SunSpider JavaScript Benchmark: JavaScript性能测试, http://webkit.org/perf/sunspider-0.9/sunspider.html

        onbeforeunload Event (BODY, FRAMESET, window):, http://msdn2.microsoft.com/en-us/library/ms536907.aspx

        ?

        ?

        ?

        [jQuery - 综合实例]

        实现前一个和后一个效果

        跨窗口调用函数

        定时刷新

        下拉列表框打开指定网站

        生成在两个边界间的随机数
        文本输入框与标签自动更换

        密码输入框与标签自动更换

        文本输入区域与标签自动更换

        Pre标签在IE与Firefox下效果相对理想的换行处理

        固定表头,滚动表格内容

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