=======粘贴以下代码,保存为html文件可直接运行查看效果=======
<html> <head> <title>鼠标滚动调整图片大小</title> <script language="javascript"> <!-- var count = 10; function resizeimg(oImage) { count = Counting(count); Resize(oImage,count); return false; } function Counting(newzoom){ if (event.wheelDelta >= 120) newzoom++; else if (event.wheelDelta <= -120) newzoom--; if (newzoom<2) newzoom=2; //只允许缩小到20% if (newzoom>50) newzoom=50; //只允许放大到500% return newzoom; } function Resize(oImage,newzoom){ oImage.style.zoom = newzoom + '0%'; count=newzoom; } --> </script> </head> <body> <center> <img class="lazyload" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB/AAffA0nNPuCLAAAAAElFTkSuQmCC" data-original="图片地址" width="670" height="502" ondblclick="return Resize(this,10);return false;" onmousewheel="return resizeimg(this)" /> </center> </body></html>
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