精简的TabComponent, 几十行的东西没必要搞个几十K

伊苏 · 发表于 2013-2-8 00:58:17

前言, 虽然jQuery的tab已经做得很好了,
但作为一个代码手写者, 多少有些洁癖,
为了1,2个小功能就要在打开的网页里下载几十乃至几百K的js lib, 心里不是滋味, 想想我自身的代码才多少, 本末倒置

但jquery的风格着实不错, 就参照写了个类似的, 以备日后自己回顾

//load custom lib<script type="tetext/javascript" src="YS_Util.tab.js"></script>//invoke//parameter: name of select tag, name of container tag, className of selected tagfunction demo(){$YS_Util.tab.createTab("tab_li", "tab_div", "selected");}

其实要实现tab控件并不难, 就是几个title的选择点击, 然后下面一个容器里, 选择对应的block, 其余的none
比较花时间的是, 有个好的封装, 和漂亮的UI, 但漂亮的UI主要是靠图片, 把时间耗在JS上还不如用PS和AI

(function(){var Tab=new Object();$YS_Util=new Object();$YS_Util.tab=Tab;var li=new Array();//save select tagvar div=new Array();//save container divvar alterClassName;//className of selected/** * perform tab component in js like GUI tabcomponent * @param tab_lbl name attribute of select button * @param tab_div containers' name attribute * @param className */Tab.createTab=function(tab_lbl, tab_div, className){try{alterClassName=className;var e=document.getElementsByName(tab_lbl);var len=e.length;for(var i=0;i<len;i++){li.push(e);e.onclick=show;e._no=i;}e=document.getElementsByName(tab_div);len=e.length;for(var i=0;i<len;i++){div.push(e);e.style.display="none";}//initial setting, default display 1st tag & divli[0].className=alterClassName;e[0].style.display="block";}catch(err){alert(err);}}var show=function(){try{for(i in li){li.className="";}li[this._no].className=alterClassName;for(i in div){div.style.display="none";}div[this._no].style.display="block";}catch(err){alert(err);}}})();

html demo

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html> <head> <title>Tab Conponent Demo</title> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><script type="text/javascript" src="YS_Util.tab.js"></script><style type="text/css">#tab li{display: table-cell;padding-left: 20px;padding-right: 20px;background-color: bisque;cursor: pointer;}#tab li.selected {background-color: burlywood;}#tab>div{border: solid #777 0px;background-color: burlywood;}</style><script type="text/javascript" >function demo(){$YS_Util.tab.createTab("tab_li", "tab_div", "selected");}</script> </head> <body > Tab Conponent Demo<br /><br /> <div id="tab"> <li name="tab_li" >JS</li> <li name="tab_li" >CSS</li> <li name="tab_li" >JAVA</li> <li name="tab_li" >SQL</li><div><br /><div name="tab_div">jquery<br />EXT<br />regular<br /></div><div name="tab_div">table<br />list<br />layout<br />border<br />selector</div><div name="tab_div">String<br />Integer<br />Collection<br /></div><div name="tab_div">PL-SQL<br />T-SQL</div> </div> </div> </body></html>

其实不一定要li+div, 用table实现也是不错的, 第一行做title, 第二行合并全部单元格做container,
对于设置标签和容器等宽很方便

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html> <head> <title></title> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><script type="text/javascript" src="YS_Util.tab.js"></script><style type="text/css">table {table-layout: fixed; border-collapse: collapse; width: 400px}table tr.title td {border: solid #777 1px; text-align: center; background-color: burlywood; cursor: pointer;}table tr.title td.selected {border-bottom: 0px; background-color: bisque;}table td[colspan="4"] {border: solid #777 1px; border-top: 0px; background-color: bisque;}</style><script>function demo(){$YS_Util.tab.createTab("tab_td", "tab_div", "selected");}</script> </head> <body > TAB COMPONENT DEMO2<br /><br /> <table> <tr class="title" > <td name="tab_td">JS</td> <td name="tab_td">CSS</td> <td name="tab_td">JAVA</td> <td name="tab_td">SQL</td> </tr> <tr> <td colspan="4"> <div name="tab_div">jquery<br />EXT<br />regular<br /></div> <div name="tab_div">table<br />list<br />layout<br />border<br />selector</div> <div name="tab_div">String<br />Integer<br />Collection<br /></div> <div name="tab_div">PL-SQL<br />T-SQL</div> </td> </tr> </table> </body></html>

效果如图, 只简单写了点CSS配色, 笔记就懒得PS了

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