自写图片遮罩层放大功能jquery插件源码，photobox.js 1.0版，不兼容IE6

本文主要是介绍自写图片遮罩层放大功能jquery插件源码，photobox.js 1.0版，不兼容IE6，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

阿嚏~~~

话说本屌丝没啥开发插件的经验，但是天公不作美，公司需要让我自己开发个图片放大的插件

但公司老大的话，犹如吾皇之圣旨，微臣必当肝脑涂地，莫敢不从啊~~~

于是乎，作为一个超级小白，本人只能瞎研究了，幸好黑天不负屌丝人，本屌丝终于搞出来了，虽然不尽善尽美，但是功能还是可以用的啦

先附上源码，求各种大神指导：

/******************************** photobox跨浏览器兼容插件 v1.0（不支持IE6）* 格式：<a href="big.jpg" id="b1" title="我就是一坨屎，你来咬我啊！"><img src="small.jpg"></a>///$("#b1").photobox();*******************************/
;(function($){$.fn.photobox = function(options){var opts = $.extend({}, $.fn.photobox.defaults, options);//整合参数return this.each(function(){$(this).click(function(){if(opts.showshadow){//如果设置显示阴影遮罩层，则显示$.fn.photobox.shadow(opts.shadowOptions);}if(opts.showbox){//如果设置显示图片边框，则显示$.fn.photobox.box();}if(opts.showclosebtn){//如果设置显示关闭按钮，则显示$.fn.photobox.closebtn();}var $this = $(this);var imgSrc = $this.attr("href");var title = $this.attr("title");var bigImg = new Image();//用js来获取图片高度和宽度bigImg.src = imgSrc;var h = bigImg.height;var w = bigImg.width;var $bigphoto = $('<img src="'+imgSrc+'" rel="photobox">');var wh = $(window).height();var ww = $(window).width();$bigphoto.css({"width":"0px" , "height":"0px","z-index":"10000","opacity":0});$("#pb_box").append($bigphoto);if(opts.showtitle){//显示title$.fn.photobox.title(title);}//大家一起show$("#boxshadow").stop(true).fadeIn(opts.speed);var title_h = 0;title_h = opts.showtitle ? 20 : 0 ;$("#pb_box").stop(true).animate({"width":w+"px","height":h+title_h+"px","top":parseInt((wh-h-title_h)/2)+"px","left":parseInt((ww-w)/2)+"px","opacity":1},opts.speed);if(opts.showclosebtn){$("#pb_closebtn").stop(true).animate({"width":"31px","height":"32px","opacity":1},opts.speed);}$bigphoto.stop(true).animate({"width":w+"px","height":h+"px","opacity":1},opts.speed);if(opts.showtitle){$("#pb_phototitle").stop(true).animate({"height":"20px","width":w+"px","opacity":1},opts.speed);}$.fn.photobox.close();$.fn.photobox.resize();return false;//防止a标签跳转});}); };$.fn.photobox.shadow = function(options){//添加背景阴影遮罩层var shadowOptions = {"width":"100%","height":"100%","position":"fixed","top":"0","left":"0","display":"none"};var $boxshadow=$('<div></div>');$boxshadow.attr({"id":"boxshadow"});$boxshadow.css(shadowOptions);$boxshadow.css(options);$("body").append($boxshadow);};$.fn.photobox.box = function(){var wh = $(window).height();var ww = $(window).width();var $box = $('<div></div>');//包裹图片的div$box.attr({"id":"pb_box"});$box.css({"background-color": "#fff","padding": "10px","position": "fixed","opacity": "0","width": "0px","height":" 0px","top": parseInt(wh/2)+"px","left":parseInt(ww/2)+"px","z-index":10000});$("body").append($box);};$.fn.photobox.closebtn = function(){//图片关闭按钮var $close = $('<a></a>');//关闭按钮$close.attr({"id":"pb_closebtn"});$close.css({"background": "url('css/web/images/close.png')","position": "absolute","opacity": "0","width": "0px","height":" 0px","top": "-15px","right":"-15px","z-index":10000});$("#pb_box").append($close);};$.fn.photobox.title = function(title){var $title = $('<span></span>');//图片title$title.attr({"id":"pb_phototitle"});$title.css({"line-height":"20px","color":"#1e2024","text-align":"center"});$title.html(title);$("img[rel='photobox']").after($title);};$.fn.photobox.close = function(){$("#boxshadow,#pb_closebtn").click(function(){var wh = $(window).height();var ww = $(window).width();$("#boxshadow").fadeOut($.fn.photobox.defaults.speed,function(){$(this).remove();});$("#pb_box").animate({"width":"20px","height":"20px","top":parseInt(wh/2)+"px","left":parseInt(ww/2)+"px","opacity":0},$.fn.photobox.defaults.speed,function(){$(this).remove();});$("img[rel='photobox']").animate({"width":"0px","height":"0px","opacity":0},$.fn.photobox.defaults.speed,function(){$(this).remove();});if(opts.showclosebtn){//如果设置显示关闭按钮$("#pb_closebtn").stop(true).animate({"width":"0px","height":"0px","opacity":0},$.fn.photobox.defaults.speed,function(){$(this).remove();});}if(opts.showtitle){$("#pb_phototitle").stop(true).animate({"height":"0px","width":"0px","opacity":0},$.fn.photobox.defaults.speed,function(){$(this).remove();});}});};$.fn.photobox.resize = function(){$(window).resize(function(){if($("body").has($("#pb_box"))){var wh = $(window).height();var ww = $(window).width();var h = $("#pb_box").height();var w = $("#pb_box").width();$("#pb_box").stop(true).animate({'top':(wh-h)/2 +'px','left':(ww-w)/2 +'px'},100);}});};$.fn.photobox.defaults = {showclosebtn:true,showtitle:true,speed:400,//以下参数暂时不允许用户修改showshadow:true,showbox:true,showoverlay:true,//此功能暂未开放shadowOptions:{ "background-color": "#000", "opacity": 0.6 , "z-index": 9999},//遮罩层的zIndex要小于图片层的zIndexautoresize:true};
})(jQuery);

附张效果图：