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js仿淘宝商品放大预览功能
时间:2017-06-28 编辑:简简单单 来源:一聚教程网
将鼠标移动至图片区域可放大预览
效果图:
代码如下:
代码如下 | 复制代码 |
*{padding:0; margin:0;} #img1{width:300px; height:200px;} #sp1{width:60px; height:40px; position: absolute; left:0; top:0; background: rgba(62, 55, 58, 0.4) } #img2{width:2250px; height:1500px; position: absolute;} div{width:450px; height:300px; position: absolute; left:310px; top:0; overflow: hidden; border:2px solid black; display: none;}
window.onload=function(){ var img1 = document.getElementById('img1'); var img2 = document.getElementById('img2'); var sp = document.getElementById('sp1'); var oBox = document.getElementById('box'); sp.onmouseover=function(){ oBox.style.display='block'; }; sp.onmouseout=function(){ oBox.style.display='none'; }; document.onmousemove=function(ev){ var x = (ev.clientX || event.clientX)-sp.offsetWidth/2; var y = (ev.clientY || event.clientY)-sp.offsetHeight/2; if((ev.clientX || event.clientX) x=0; } if((ev.clientX || event.clientX)>img1.offsetWidth-sp.offsetWidth/2){ x = img1.offsetWidth-sp.offsetWidth; } if((ev.clientY || event.clientY) y=0; }if((ev.clientY || event.clientY)>img1.offsetHeight-sp.offsetHeight/2){ y = img1.offsetHeight-sp.offsetHeight; } if((ev.clientX || event.clientX)<300&& (ev.clientY || event.clientY)<200) { sp.style.left=x+ 'px'; sp.style.top= y + 'px'; img2.style.left = -x * (img2.offsetWidth / img1.offsetWidth) + 'px'; img2.style.top = -y * (img2.offsetHeight / img1.offsetHeight) + 'px'; } } } "alt=""id="img1"> "alt=""id="img2"> |