画像拡大とクリック切り替え機能のjquery実装の共有例

 
 
  
 
 
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*{ margin: 0; padding:0; } li{ list-style: none; } .boss{ position:relative; width: 350px; } .bigimg{ width: 350px; border: 1px solid #ccc; height: 350px; position: relative; } #mask{ width: 150px; height: 150px; background: rgba(255,255,255,0.5); position: absolute; top: 0; left: 0; border:1px solid #ccc; cursor: pointer; } .xia{ clear:both; margin-top:5px; width:352px; } .xia .prev{ float:left; margin-right:4px; } .xia .next{ float:right; } .xia .prev,.xia .next{ display:block; text-align:center; width:10px; height:54px; line-height:54px; border:1px solid #CCC; background:#EBEBEB; cursor:pointer; text-decoration:none; } .xia .items{ float:left; position:relative; width:322px; height:56px; overflow:hidden; } .xia .items ul{ position:absolute; height:56px; } .xia .items ul li{ float:left; width:64px; text-align:center; } .xia .items ul li img{ border:1px solid #CCC; padding:2px; width:50px; height:50px; } .xia .items ul li img:hover{ border:2px solid #FF6600; padding:1px; } .zoom{ width: 350px; height: 410px; border:1px solid #ccc; position: absolute; top: 0; right: -360px; overflow: hidden; display: none; }

var $spic=$("#spic"); var $mask=$("#mask"); var $bigimg=$(".bigimg"); var $bpic=$("#bpic"); $(".items img").on("mouseover",function(){ $spic.attr("src",$(this).attr("src"));//鼠标滑过切换 $bpic.attr("src",$(this).attr("src")); }); var l=$bigimg.eq(0).offset().left; var t=$bigimg.eq(0).offset().top; var width1=$mask.outerWidth()/2; var height1=$mask.outerHeight()/2; var maxl=$bigimg.width()-$mask.outerWidth(); var maxt=$bigimg.height()-$mask.outerHeight(); var bili=$bpic.width()/$spic.width(); $bigimg.mouseover(function(e){ var maskl=e.clientX-l-width1,maskt=e.clientY-t-height1; if(maskl<0) maskl=0; if(maskt<0) maskt=0; if(maskl>maxl)maskl=maxl; if(maskt>maxt)maskt=maxt; $mask.css({"left":maskl,"top":maskt}); $(".zoom").show(); $bpic.css({"margin-left":-maskl*bili,"margin-top":-maskt*bili}); }); var marginLeft=0 $(".next").click(function(){ marginLeft=marginLeft-63.5; if(marginLeft<-254) marginLeft=-254; $(".items ul").css({"margin-left":marginLeft}) }) $(".prev").click(function(){ marginLeft=marginLeft+63; if(marginLeft>0) marginLeft=0; $(".items ul").css({"margin-left":marginLeft}) });