鼠标指向小图表现大图，JS实现图片加载结果

发布时间：2018-08-18 09:20:40 所属栏目：编程来源：站长网

导读：一款基于 Java Script的图片放大，鼠标指向小图表现大图，JS实现图片加载结果，自动判定大图表现位置，假如超出显树模畴，在另一侧展示，增进几分人道化，确实不错的结果，猛火网保举您参考。示例： !DOCTYPE html PUBLIC -//W3C//DTD XHTML 1.0 Transiti

　　一款基于JavaScript的图片放大，鼠标指向小图表现大图，JS实现图片加载结果，自动判定大图表现位置，假如超出显树模畴，在另一侧展示，增进几分人道化，确实不错的结果，猛火网保举您参考。

　　示例：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>跟从鼠标移动（大图展示）</title> <style type="text/css"> html,body{overflow:hidden;} body,div,ul,li{margin:0;padding:0;} #box ul{width:768px;height:172px;list-style-type:none;margin:10px auto;} #box li{float:left;width:170px;height:170px;cursor:pointer;display:inline;border:1px solid #ddd;margin:0 10px;} #box li.active{border:1px solid #a10000;} #box li img{width:170px;height:170px;vertical-align:top;} #big{position:absolute;width:500px;height:375px;border:2px solid #ddd;display:none;} #big div{position:absolute;top:0;left:0;width:400px;height:400px;opacity:0.5;filter:alpha(opacity=50);background:#fff url(http://www.veryhuo.com/uploads/common/images/loading.gif) 50% 50% no-repeat;} </style> <script type="text/javascript"> window.onload = function () { var aLi = document.getElementsByTagName("li"); var oBig = document.getElementById("big"); var oLoading = oBig.getElementsByTagName("div")[0]; var i = 0; for (i = 0; i < aLi.length; i++) { aLi[i].index = i; //鼠标划过, 预加载图片插入容器并表现 aLi[i].onmouseover = function () { var oImg = document.createElement("img"); //图片预加载 var img = new Image(); img.src = oImg.src = aLi[this.index].getElementsByTagName("img")[0].src.replace("s_",""); //插入大图片 oBig.appendChild(oImg); //鼠标移过样式 this.className = "active"; //表现big oBig.style.display = oLoading.style.display = "block"; //判定大图是否加载乐成 img.complete ? oLoading.style.display = "none" : (oImg.onload = function() {oLoading.style.display = "none";}) }; //鼠标移动, 大图容器跟从鼠标移动 aLi[i].onmousemove = function (event) { var event = event || window.event; var iWidth = document.documentElement.offsetWidth - event.clientX; //配置big的top值 oBig.style.top = event.clientY + 20 + "px"; //配置big的left值, 假如右侧表现地区不足, 大图将在鼠标左侧表现. oBig.style.left = (iWidth < oBig.offsetWidth + 10 ? event.clientX - oBig.offsetWidth - 10 : event.clientX + 10) + "px"; }; //鼠标分开, 删除大图并潜匿大图容器 aLi[i].onmouseout = function () { this.className = ""; oBig.style.display = "none"; //移除大图片 oBig.removeChild(oBig.lastChild) } } }; </script> </head> <body> <div id="box"> <ul> <li><img src="http://www.veryhuo.com/uploads/common/images/s_p0.jpg" /></li> <li><img src="http://www.veryhuo.com/uploads/common/images/s_p1.jpg" /></li> <li><img src="http://www.veryhuo.com/uploads/common/images/s_p2.jpg" /></li> </ul> </div> <div id="big"><div></div></div> </body> </html><br /><center>如不能表现结果，请按Ctrl+F5革新本页，更多网页代码：<a href='http://www.veryhuo.com/' target='_blank'>http://www.veryhuo.com/</a></center>
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