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JS Picture Magnifier

Source: Internet
Author: User
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JS Image Magnifier effect.

Application scenario: Major e-commerce websites.

Annex

<!--author:xiaowencreate a file:2017-01-13 12:28:36last modified:2017-01-13 17:16:46start to work:Finish the Work:Other Information: -<!DOCTYPE HTML><HTMLLang= "en"><Head>  <MetaCharSet= "UTF-8">  <title>Document</title>  <style>    *{margin:0;padding:0;    }#box{Height:280px;width:480px;background:URL (small.jpg) no-repeat;float: Left;    }#rec{Height:100px;width:100px;Opacity:. 5;background:#ccc;position:Absolute; Left:0;Top:0;Display:None;    }#box1{Height:400px;width:400px;background:URL (big.jpg) no-repeat;float: Left;Display:None;    }  </style></Head><Body><DivID= "box">  <DivID= "Rec"></Div></Div><DivID= "Box1"></Div></Body><Script>Box.onmouseover=function() {Rec.style.display='Block'; Box1.style.display='Block'; } box.onmousemove=function(EV) {vare=EV||event; //var ex=e.clientx;//mouse position not in the middle    //EX=E.CLIENTX-REC.OFFSETWIDTH/2;//mouse position in the middle    varex=E.clientx-Rec.offsetwidth/2;    varey=E.clienty-Rec.offsetheight/2;    //let the small square not go beyond the left    if(ex<box.offsetleft) {Ex=Box.offsetleft}//let the small square not go beyond the right    if(ex>Box.offsetleft+Box.offsetwidth-rec.offsetwidth) { //let the small square not go beyond the leftex=Box.offsetleft+Box.offsetwidth-Rec.offsetwidth}//let the small square not exceed the top    if(EY<box.offsettop) {EY=Box.offsettop}//let the small square not exceed the bottom    if(EY>Box.offsettop+Box.offsetheight-rec.offsetheight) {EY=Box.offsettop+Box.offsetheight-Rec.offsetheight} rec.style.left=ex+'px'; Rec.style.top=ey+'px'; Box1.style.backgroundPositionX=-4*ex+'px'Box1.style.backgroundPositionY=-4*ey+'px'} box.onmouseout=function() {Rec.style.display='None'; Box1.style.display='None'; }</Script></HTML>

JS Picture Magnifier

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