首先先搭寫一個基本的格式：
$.fn.popImg = function() { //your code goes here}然后用自調用匿名函數包裹你的代碼，將系統變量以變量形式傳遞到插件內部，如下：
;(function($,window,document,undefined){ $.fn.popImg = function() { //your code goes here }})(jQuery,window,document);那么接下來我們就在里面實現點擊文章圖片彈出該圖片并放大的效果。
整體代碼如下：
;(function($,window,document,undefined){ $.fn.popImg = function(){ //創建彈出層 var $layer = $("<div>").css({ position:'fixed', left:0, right:0, top:0, bottom:0, width:'100%', height:'100%', zIndex:9999999, display:'none', background: "#000", opacity:'0.6' }); //復制點擊的圖片，獲得圖片的寬高以及位置 var cloneImg = function($targetImg){ var cloneW = $targetImg.width(), cloneH = $targetImg.height(), left = $targetImg.offset().left, top = $targetImg.offset().top; return $targetImg.clone().css({ position:'fixed', width:cloneW, height:cloneH, left:left, top:top, zIndex:10000000 }); }; //讓復制的圖片居中顯示 var centerImg = function($cloneImg){ var dW = $(window).width(); var dH = $(window).height(); $cloneImg.css('cursor','zoom-out').attr('clone-bigImg',true); var img = new Image(); img.onload = function(){ $cloneImg.stop().animate({ width: this.width, height: this.height, left: (dW - this.width) / 2, top: (dH - this.height) / 2 },300); } img.src = $cloneImg.attr('src'); }; this.each(function(){ $(this).css('cursor','zoom-in').on('click',function(){ var $body = $("body"); $layer.appendTo($body); $layer.fadeIn(300); var $c = cloneImg($(this)); $c.appendTo($body); centerImg($c); }); }); var timer = null; $(window).on("resize", function(){ $("img[clone-bigImg]").each(function(){ var $this = $(this); timer && clearTimeout(timer); timer = setTimeout(function(){ centerImg($this); }, 10); }); }); $(window).on("click keydown", function(evt){ if(evt.type == "keydown" && evt.keyCode === 27) { $layer.fadeOut(300); $("img[clone-bigImg]").remove(); } var $this = $(evt.target); if($this.attr("clone-bigImg")){ $layer.fadeOut(300); $("img[clone-bigImg]").remove(); } }); }})(jQuery,window,document);以上就是本文的全部內容，希望本文的內容對大家的學習或者工作能帶來一定的幫助，同時也希望多多支持武林網！
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