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jQuery對稱三角箭頭，jquery箭頭

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jQuery對稱三角箭頭，jquery箭頭

具體原理可以參考我的這篇文章：jQuery彈出層+CSS箭頭製作

使用方法如下：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=gb2312" /><title>無標題文檔</title><script type="text/javascript" src="jquery-1.9.1.js"></script><script type="text/javascript" src="jquery.arrow.js"></script><style type="text/css">*{margin:0;padding:0}b{margin-top:20px}</style></head><b class="left"/><b class="top"/><b class="bottom"/><b class="right"/><body></body><script type="text/javascript">//左箭頭$(".left").arrow({color:'#FF0000',height:10,width:20,direction:'left'});//預設情況$(".top").arrow();//向下箭頭$(".bottom").arrow({color:'#FF9900',height:30,width:30,direction:'bottom'});</script></html>
具體實現代碼： 

/** * jquery 箭頭產生 * @author:xuzengqiang * @since :2015-2-4 15:31:39**/;(function($){   jQuery.fn.extend({/** *描述:產生指定箭頭樣式**/arrow:function(options){var defaultOptions = {color:'#AFAFAF',height:20,width:20,//方向:預設向上'top',供選擇['up','bottom','left','right']direction:'top'};var settings = jQuery.extend(defaultOptions,options||{}),current = $(this);function loadStyle(){current.css({"display":"block","width":"0","height":"0"});if(settings.direction === "top" || settings.direction === "bottom") {current.css({"border-left-width":settings.width/2,"border-right-width":settings.width/2,"border-left-style":"solid","border-right-style":"solid","border-left-color":"transparent","border-right-color":"transparent"});if(settings.direction === "top") {current.css({"border-bottom-width":settings.height,"border-bottom-style":"solid","border-bottom-color":settings.color});} else {current.css({"border-top-width":settings.height,"border-top-style":"solid","border-top-color":settings.color});}} else if(settings.direction === "left" || settings.direction === "right") {current.css({"border-top-width":settings.height/2,"border-bottom-width":settings.height/2,"border-top-style":"solid","border-bottom-style":"solid","border-top-color":"transparent","border-bottom-color":"transparent"});if(settings.direction === "left") {current.css({"border-right-width":settings.width,"border-right-style":"solid","border-right-color":settings.color});} else {current.css({"border-left-width":settings.width,"border-left-style":"solid","border-left-color":settings.color});}}}return this.each(function(){ loadStyle(); });}});})(jQuery);



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