// 上传预览图片 start $('#photo').on('change',function(){ var pathurl = ''; if(this.files && this.files[0]){ pathurl = window.URL.createObjectURL(this.files[0]); }else{ // IE下 //IE下，使用滤镜 this.select(); pathurl = document.selection.createRange().text; } // 校验获取的是否为图片文件 var path=$(this).val(); var path1 = path.lastIndexOf("\\"); var name = path.substring(path1+1); // 获取到的文件名称 var filepath=name.substring(name.lastIndexOf('.')+1,name.length); if(filepath.toLowerCase() != 'jpg' && filepath.toLowerCase() != 'gif' && filepath.toLowerCase() != 'jpeg' && filepath.toLowerCase() != 'png') //gif,jpg,jpeg,png { alert("只能上传gif,jpg,jpeg,png格式的图片"); // var imgurl = $('.headimg-box img').attr('src'); // console.log(imgurl) // console.log($('#photo').val()) }else{ $('.headimg-box img').attr({'src':pathurl}); } });
本地图片预览PC <head> <script type="text/javascript"> 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){ if(fileObj.files){//HTML5实现预览，兼容chrome、火狐7+等 if(window.FileReader){ var reader = new FileReader(); reader.onload = function(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){ 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> </head> <body> <input type="file" name="file" onchange="PreviewImage(this,'imgHeadPhoto','divPreview')" /> <font color="red"> 图片大小为40＊40</font> <br/> <div id="divPreview"> <img id="imgHeadPhoto" width="200" height="200" src="/admin/upload/"> </body>
