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兼容性还行IE,FireFox,google chrome均正常。 ![]()
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<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <title>http://www.cnblogs.com/greatverve</title> <style type="text/css"> body {background:#f6f6e7;font: normal 14px/1.4em YaHeiConsolas,"Microsoft YaHei",Georgia, "Times New Roman", Times, serif;width:980px;margin:20px auto} h1 {color:#4f3c00;font: 28px/2em YaHeiConsolas,"Microsoft YaHei",Georgia, "Times New Roman", Times, serif } h2 {color:#4f3c00;font: 22px/1.5em YaHeiConsolas,"Microsoft YaHei",Georgia, "Times New Roman", Times, serif } #smallImgCon {position:relative;left:0;top:0;} #magnifierCon {height:276px;width:276px;position:absolute;overflow:hidden;z-index:3} #magnifierCon img#magnifierBg {position:absolute;z-index:2} #magnifierCon img#largeImg {position:absolute;z-index:1} </style> </head> <body> <h1>大气象 实例演示</h1> <h2>放大镜</h2> <div onMouseMove="imgZoomOut(event)" id="smallImgCon"> <img src="airport_small_1.jpg" id="smallImg"/> <div id="magnifierCon" style="display:none"> <img src="magnifier.png" id="magnifierBg"/> <img src="airport_large_1.jpg" id="largeImg"/> </div> </div> <script type="text/javascript"> var smallImgCon = document.getElementById("smallImgCon"); var smallImg = document.getElementById("smallImg"); var magnifierCon = document.getElementById("magnifierCon"); var magnifierBg = document.getElementById("magnifierBg"); var largeImg = document.getElementById("largeImg"); function getImageSize(imageEl) { var i = new Image(); i.src = imageEl.src; return new Array(i.width, i.height); } function imgZoomOut(event) { magnifierCon.style.display = "block"; smallImgConLocationX = smallImgCon.offsetLeft;//得到小图片X坐标 smallImgConLocationY = smallImgCon.offsetTop;//得到小图片Y坐标 x = event.clientX - smallImgConLocationX;//光标相对小图片左上角X坐标 y = event.clientY - smallImgConLocationY;//光标相对小图片左上角Y坐标 var smallSize = getImageSize(smallImg); smallImgWidth = smallSize[0]; smallImgHeight = smallSize[1]; var largeSize = getImageSize(largeImg); largeImgWidth = largeSize[0]; largeImgHeight = largeSize[1]; var magnifierSize = getImageSize(magnifierBg); magnifierWidth = magnifierSize[0]; magnifierHeight = magnifierSize[1]; if ( x < 0 || x > smallImgWidth || y < 0 || y > smallImgHeight) { dispear(); }else { magnifierCon.style.left = x - magnifierWidth/2 + "px";//放大镜X坐标 magnifierCon.style.top = y - magnifierHeight/2 + "px";//放大镜Y坐标 x = - x*(largeImgWidth/smallImgWidth) + magnifierWidth/2; y = - y*(largeImgWidth/smallImgWidth) + magnifierHeight/2; largeImg.style.left = x + "px"; largeImg.style.top = y + "px"; } } function dispear() { magnifierCon.style.display = "none"; } </script> </body> </html>
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