js之上傳文件多圖片預覽
阿新 • • 發佈：2018-06-24
multi AD lec TE ros oat F5 不能 range
多圖片上傳預覽功能也是現在非常常用的
下面是html代碼:
<html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>測試頁面</title> <script type="text/javascript"> //下面用於多圖片上傳預覽功能 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，直接設img屬性 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()方式獲取，需要一下方式 imgObjPreview.src = window.URL.createObjectURL(docObj.files[i]); } else { //IE下，使用濾鏡 docObj.select(); var imgSrc = document.selection.createRange().text; alert(imgSrc) var localImagId = document.getElementById("img" + i); //必須設置初始大小 localImagId.style.width = "150px"; localImagId.style.height = "180px"; //圖片異常的捕捉，防止用戶修改後綴來偽造圖片 try { localImagId.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale)"; localImagId.filters.item("DXImageTransform.Microsoft.AlphaImageLoader").src = imgSrc; } catch (e) { alert("您上傳的圖片格式不正確，請重新選擇!"); return false; } imgObjPreview.style.display = ‘none‘; document.selection.empty(); } } return true; } </script> </head> <body> <div style="margin :0px auto; width:990px;"> <input type="file" name="file" id="doc" multiple="multiple" style="width:150px;" onchange="javascript:setImagePreviews();" accept="image/*" /> <div id="dd" style=" width:990px;"></div> </div> </body> </html>
js之上傳文件多圖片預覽