82 lines
2.5 KiB
JavaScript
82 lines
2.5 KiB
JavaScript
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function fnCreate(src){
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/* 要创建的div的classname */
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var ClassName = "thumbviewbox";
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if(src == '')
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{
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return false;
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}
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/* 优先创建图片，如果图片没有加载成功，回调自己 */
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var img = document.createElement('img');
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img.setAttribute('src',src);
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var imgwd = img.width;
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var imghg = img.height;
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if(imgwd<1)
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{
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var timer = setTimeout("fnCreate('"+src+"')",100);
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return false;
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}else{
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clearInterval(timer);
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}
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/* 清除已经弹出的窗口，防止冒泡 */
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em = document.getElementsByClassName(ClassName)
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for(var i=em.length-1; i>=0; i--){
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var p = em[i];
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p.parentNode.removeChild(p);
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}
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/* 各项参数 */
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var htmlWidth = window.innerWidth; //可见区域宽度
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var htmlHeight = window.innerHeight; //可见区域高度
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var divleft = 0; //将要创建的div的左边距
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var divtop =0; //将要创建的div的右边距
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var closefunction = 'em=document.getElementsByClassName("'+ClassName+'");for(var i=em.length-1;i>=0;i--){var p=em[i];p.parentNode.removeChild(p);}'; //关闭div的代码
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img.setAttribute('onclick',closefunction);
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/* 计算通过图片计算div应该在的位置，保证弹窗在页面中央 */
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if(imgwd>htmlWidth*0.8)
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{
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img.setAttribute('width',htmlWidth*0.8);
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divleft=htmlWidth*0.1;
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if(imghg>htmlHeight*0.8)
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{
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divtop = htmlHeight*0.1;
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}else{
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divtop = (htmlHeight-imgwd)/2;
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}
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}else{
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img.setAttribute('width',imgwd);
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divleft= (htmlWidth-imgwd)/2;
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if(imghg>htmlHeight*0.8)
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{
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divtop = htmlHeight*0.1;
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}
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else
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{
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divtop = (htmlHeight-imgwd)/2;
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}
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}
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/* 创建关闭按钮 */
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var closebtn = document.createElement('a');
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closebtn.setAttribute('class','close');
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closebtn.setAttribute('href','javascript:;');
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closebtn.setAttribute('style','position:absolute;top:-20px;right:-5px;cursor:pointer;background:#444;color:#FFF;');
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closebtn.innerHTML = '[close/关闭]';
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closebtn.setAttribute('onclick',closefunction);
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/* 创建弹窗 */
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var element = document.createElement('div');
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element.appendChild(img);
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element.appendChild(closebtn);
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element.setAttribute('class',ClassName);
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element.setAttribute('style','border:5px solid #444;position:absolute;top:'+Math.round(divtop)+'px;left:'+Math.round(divleft)+'px;border-radius:5px;background:#FFF');
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document.body.appendChild(element);
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}
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