<script type="text/javascript" src="js/jquery.min.js"></script> <script type="text/javascript"> jQuery.fn.LoadImage=function(scaling,width,height,loadpic){ if(loadpic==null)loadpic="../img/loading.gif"; return this.each(function(){ var t=$(this); var src=$(this).attr("src") var img=new Image(); img.src=src; //自动缩放图片 var autoScaling=function(){ if(scaling){ if(img.width>0 && img.height>0){ if(img.width/img.height>=width/height){ if(img.width>width){ t.width(width); t.height((img.height*width)/img.width); }else{ t.width(img.width); t.height(img.height); } } else{ if(img.height>height){ t.height(height); t.width((img.width*height)/img.height); }else{ t.width(img.width); t.height(img.height); } } } } } //处理ff下会自动读取缓存图片 if(img.complete){ autoScaling(); return; } $(this).attr("src",""); var loading=$("<img alt=\"加载中...\" title=\"图片加载中...\" src=\""+loadpic+"\" />"); t.hide(); t.after(loading); $(img).load(function(){ autoScaling(); loading.remove(); t.attr("src",this.src); t.show(); }); } ); } </script> <div id="content"><img src="img/20120518073933709.jpg"/></div> <script type="text/javascript"> <!-- $(window).load(function(){ $('#content img').LoadImage(true, 600,500,'img/loading.gif'); }); //--> </script>