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<style> .demo-img { width: 400px; height: 300px; border-radius: 5px; } </style> <img src="http://demo.sc.chinaz.com//Files/DownLoad/webjs1/201603/jiaoben4063/demo/img/waldo.jpg" class="demo-img pos-center"> <script type="text/javascript" src="http://apps.bdimg.com/libs/jquery/1.9.0/jquery.min.js"></script> <script> // blowup.min.js // Paul Krishnamurthy 2016 $(function(o){o.fn.blowup=function(e){var t=this;if(!t.is("img"))return void console.log("%c Blowup.js Error: %cTarget element is not an image.","background: #FCEBB6; color: #F07818; font-size: 17px; font-weight: bold;","background: #FCEBB6; color: #F07818; font-size: 17px;");var n=t.attr("src"),i=(t.width(),t.height(),new Image);i.src=t.attr("src");var r={round:!0,width:200,height:200,background:"#FFF",shadow:"0 8px 17px 0 rgba(0, 0, 0, 0.2)",border:"6px solid #FFF",cursor:!0,zIndex:999999},s=o.extend(r,e);t.on("dragstart",function(o){o.preventDefault()}),t.css("cursor",s.cursor?"crosshair":"none");var d=document.createElement("div");d.id="BlowupLens",o("body").append(d),$blowupLens=o("#BlowupLens"),$blowupLens.css({position:"absolute",visibility:"hidden","pointer-events":"none",zIndex:s.zIndex,width:s.width,height:s.height,border:s.border,background:s.background,"border-radius":s.round?"50%":"none","box-shadow":s.shadow,"background-repeat":"no-repeat"}),t.mouseenter(function(){$blowupLens.css("visibility","visible")}),t.mousemove(function(o){var e=o.pageX-s.width/2,r=o.pageY-s.height/2,d=o.pageX-this.offsetLeft,a=o.pageY-this.offsetTop,u=-Math.floor(d/t.width()*i.width-s.width/2),h=-Math.floor(a/t.height()*i.height-s.height/2);$blowupLens.css({left:e,top:r,"background-image":"url("+n+")","background-position":u+" "+h})}),t.mouseleave(function(){$blowupLens.css("visibility","hidden")})}}); 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$(document).ready(function () { $(".demo-img").blowup({ background : "#FCEBB6" }); }) </script>
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