原生js淘宝放大镜效果(第二版)
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<!DOCTYPE html> <html> <head> <title>放大镜</title> <meta charset="utf-8" /> <style type="text/css"> *{ margin: 0; padding: 0; } body{ height: 2000px; } #wrapleft{ width: 300px; height: 400px; background: skyblue; box-shadow: 2px 2px 2px 2px gray; position: absolute; left: 100px; top: 100px; } .smallg{ width: 70px; height: 99px; float: left; margin-left: 5px; } .smallg img{ width: 70px; height: 99px; } .smallg:hover{ box-shadow: 2px 2px 2px 2px gray; } #bigg{ width: 300px; height: 300px; position: relative; } #bigg img{ width: 300px; height: 300px; } #MoverGlass{ width: 100px; height: 100px; position: absolute; background-color: rgba(0,0,0,0.5); left: 0; top: 0; display: none; } #wrapright{ width: 400px; height: 400px; position: absolute; display: none; background-color: yellowgreen; left: 420px; top: 100px; overflow: hidden; } #Myeye{ width: 1200px; height: 1200px; position: absolute; left: 0; top: 0; display: block; } </style> </head> <body> <div id="wrapleft"> <div id="bigg"> <img src="https://img.alicdn.com/imgextra/i1/5/TB2JKUbpVXXXXacXXXXXXXXXXXX_!!5-0-yamato.jpg_210x1000q90.jpg"> <div id="MoverGlass"> </div> </div> <div class="smallg"><img src="https://img.alicdn.com/imgextra/i1/5/TB2JKUbpVXXXXacXXXXXXXXXXXX_!!5-0-yamato.jpg_210x1000q90.jpg"></div> <div class="smallg"><img src="https://gd1.alicdn.com/imgextra/i1/2621336145/TB2Vc3ogFXXXXX9XXXXXXXXXXXX_!!2621336145.jpg"></div> <div class="smallg"><img src="https://img.alicdn.com/imgextra/i1/2621336145/TB22k_8gFXXXXXeXpXXXXXXXXXX_!!2621336145.jpg"></div> <div class="smallg"><img src="https://img.alicdn.com/imgextra/i2/2621336145/TB2YSDHlpXXXXarXXXXXXXXXXXX_!!2621336145.jpg"></div> </div> <div id="wrapright"> <img src="ihttps://img.alicdn.com/imgextra/i1/5/TB2JKUbpVXXXXacXXXXXXXXXXXX_!!5-0-yamato.jpg_210x1000q90.jpg" id="Myeye"> </div> </body> </html> <script type="text/javascript"> var wrapleft=document.getElementById("wrapleft"); var wrapright=document.getElementById("wrapright"); var MoverGlass=document.getElementById("MoverGlass"); var bigg=document.getElementById("bigg"); var biggimg=bigg.getElementsByTagName("img")[0]; var smallg=document.getElementsByClassName(‘smallg‘); var Myeye=document.getElementById("Myeye"); for(var i=0;i<smallg.length;i++){ (function(index){ smallg[index].addEventListener("mouseover",function(){ src=smallg[index].getElementsByTagName("img")[0].src; biggimg.src=src; Myeye.src=src; },false) })(i) } bigg.addEventListener("mouseover",function(){ MoverGlass.style.display="block"; wrapright.style.display="block"; },false) bigg.addEventListener("mouseout",function(){ MoverGlass.style.display="none"; wrapright.style.display="none"; },false) bigg.addEventListener("mousemove",function(e){ var event=e||window.event; var scrollTop=document.documentElement.scrollTop||window.pageYOffset||document.body.scrollTop; var scrollLeft=document.documentElement.scrollLeft||window.pageXOffset||document.body.scrollLeft; var x=event.clientX; var y=event.clientY; var X=x-wrapleft.offsetLeft+scrollLeft-MoverGlass.offsetWidth/2; var Y=y-wrapleft.offsetTop+scrollTop-MoverGlass.offsetHeight/2; if(X<=0){ X=0; } if (X>=bigg.offsetWidth-MoverGlass.offsetWidth) { X=bigg.offsetWidth-MoverGlass.offsetWidth; } if(Y<=0){ Y=0; } if (Y>=bigg.offsetHeight-MoverGlass.offsetHeight) { Y=bigg.offsetHeight-MoverGlass.offsetHeight; } MoverGlass.style.left=X+"px"; MoverGlass.style.top=Y+"px"; Myeye.style.left=-X/bigg.offsetWidth*Myeye.offsetWidth+"px"; Myeye.style.top=-Y/bigg.offsetHeight*Myeye.offsetHeight+"px"; },false) </script>
原文:http://www.cnblogs.com/luckychenchen/p/5624829.html
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