//js本地图片预览，兼容ie[6-9]、火狐、Chrome17+、Opera11+、Maxthon3
<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title></title> </head> <body> <div id="divPreview"> <img id="imgHeadPhoto" src="" alt="" /> </div> <input type="file" onchange="PreviewImage(this,'imgHeadPhoto','divPreview')" size="20" /> <script type="text/javascript"> //js本地图片预览，兼容ie[6-9]、火狐、Chrome17+、Opera11+、Maxthon3 function PreviewImage(fileObj, imgPreviewId, divPreviewId) { var allowExtention = ".jpg,.bmp,.gif,.png";//允许上传文件的后缀名document.getElementById("hfAllowPicSuffix").value; var extention = fileObj.value.substring(fileObj.value.lastIndexOf(".") + 1).toLowerCase(); var browserVersion = window.navigator.userAgent.toUpperCase(); if (allowExtention.indexOf(extention) > -1) { //console.log(fileObj.files); if (fileObj.files) {//HTML5实现预览，兼容chrome、火狐7+等 console.log(window.FileReader); if (window.FileReader) { var reader = new FileReader(); reader.onload = function (e) { console.log(e); document.getElementById(imgPreviewId).setAttribute("src", e.target.result); } reader.readAsDataURL(fileObj.files[0]); } else if (browserVersion.indexOf("SAFARI") > -1) { alert("不支持Safari6.0以下浏览器的图片预览!"); } } else if (browserVersion.indexOf("MSIE") > -1) { console.log(111111); if (browserVersion.indexOf("MSIE 6") > -1) {//ie6 document.getElementById(imgPreviewId).setAttribute("src", fileObj.value); } else {//ie[7-9] fileObj.select(); if (browserVersion.indexOf("MSIE 9") > -1) fileObj.blur();//不加上document.selection.createRange().text在ie9会拒绝访问 var newPreview = document.getElementById(divPreviewId + "New"); if (newPreview == null) { newPreview = document.createElement("div"); newPreview.setAttribute("id", divPreviewId + "New"); newPreview.style.width = document.getElementById(imgPreviewId).width + "px"; newPreview.style.height = document.getElementById(imgPreviewId).height + "px"; newPreview.style.border = "solid 1px #d2e2e2"; } newPreview.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod='scale',src='" + document.selection.createRange().text + "')"; var tempDivPreview = document.getElementById(divPreviewId); tempDivPreview.parentNode.insertBefore(newPreview, tempDivPreview); tempDivPreview.style.display = "none"; } } else if (browserVersion.indexOf("FIREFOX") > -1) {//firefox var firefoxVersion = parseFloat(browserVersion.toLowerCase().match(/firefox/([d.]+)/)[1]); if (firefoxVersion < 7) {//firefox7以下版本 document.getElementById(imgPreviewId).setAttribute("src", fileObj.files[0].getAsDataURL()); } else {//firefox7.0+ document.getElementById(imgPreviewId).setAttribute("src", window.URL.createObjectURL(fileObj.files[0])); } } else { document.getElementById(imgPreviewId).setAttribute("src", fileObj.value); } } else { alert("仅支持" + allowExtention + "为后缀名的文件!"); fileObj.value = "";//清空选中文件 if (browserVersion.indexOf("MSIE") > -1) { fileObj.select(); document.selection.clear(); } fileObj.outerHTML = fileObj.outerHTML; } } </script> </body> </html>