javascript ImgBox透明遮罩层背景图片展示_javascript技巧

<title>JavaScript Data Access Test</title> <script type="text/javascript"> function topDiv(el){ var elem=document.createElement("div"); elem.className="top-div"; //=========create img tag var img=document.createElement("img"); img.src=el.href; elem.appendChild(img); //=========create close DIV var closeDiv=document.createElement("div"); closeDiv.innerHTML="Close"; closeDiv.onclick=function(){ document.body.removeChild(elem); document.body.removeChild(alpha); } closeDiv.style.position="absolute"; closeDiv.style.right="2px"; closeDiv.style.top="2px"; closeDiv.style.fontSize="12px"; closeDiv.style.color="red"; closeDiv.style.border="1px solid #333"; closeDiv.style.backgroundColor="#eee"; closeDiv.style.cursor="hand"; elem.appendChild(closeDiv); //=========append the top DIV to body document.body.appendChild(elem); var alpha = alphaDiv(elem); } function alphaDiv(el){ var elem=document.createElement("div"); elem.className="alphaDiv"; elem.onclick=function(e){ document.body.removeChild(elem); document.body.removeChild(el); } document.body.appendChild(elem); return elem; } onload=function(){ var links=document.getElementsByTagName("a"); for(var i=0,len=links.length;i<len;i++){ if(links[i].rel=="Imgbox"){ links[i].onclick=function(){ topDiv(this); return false; } } } } </script> <style> .alphaDiv{ z-index:100; width:100%; height:100%; opacity:0.5; background:#666666; top:0; left:0; position:absolute; filter:alpha(opacity=50); } .top-div{ z-index:101; border:1px solid #333; padding:2px; background:#eee; position:absolute; } a{ outline:none; } </style> <p><a href="http://www.jb51.net/images/logo.gif" rel="Imgbox">Click here to show the pic one.</a><br> <a href="http://img.jb51.net/imgby/downloadBtn.gif" rel="Imgbox">Click here to show the pic two.</a><br> <a href="#">Click me</a> </p>
[Ctrl+A 全选 注:如需引入外部Js需刷新才能执行]

注意上面的图片地址，大家自己