多图片上传预览效果

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<body><script>//下面用于多图片上传预览功能function setImagePreviews(avalue) {var docObj = document.getElementById("doc");var dd = document.getElementById("dd");dd.innerHTML = "";var fileList = docObj.files;for (var i = 0; i < fileList.length; i++) {            dd.innerHTML += "<div style='float:left' > <img id='img" + i + "'  /> </div>";var imgObjPreview = document.getElementById("img"+i); if (docObj.files && docObj.files[i]) {//火狐下，直接设img属性imgObjPreview.style.display = 'block';imgObjPreview.style.width = '150px';imgObjPreview.style.height = '180px';//imgObjPreview.src = docObj.files[0].getAsDataURL();//火狐7以上版本不能用上面的getAsDataURL()方式获取，需要一下方式imgObjPreview.src = window.URL.createObjectURL(docObj.files[i]);}else {//IE下，使用滤镜docObj.select();var imgSrc = document.selection.createRange().text;alert(imgSrc)var localImagId = document.getElementById("img" + i);//必须设置初始大小localImagId.style.width = "150px";localImagId.style.height = "180px";//图片异常的捕捉，防止用户修改后缀来伪造图片try {localImagId.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale)";localImagId.filters.item("DXImageTransform.Microsoft.AlphaImageLoader").src = imgSrc;}catch (e) {alert("您上传的图片格式不正确，请重新选择!");return false;}imgObjPreview.style.display = 'none';document.selection.empty();}}  return true;}</script><input type="file" name="file" id="doc" multiple="multiple" style="width:150px;" οnchange="javascript:setImagePreviews();" accept="image"><div id="dd" style=" width:990px;"></div></body>
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