ie
ie10以下没有files对象，因此不能通过files来获取选中文件的大小。
解决办法
ie8以上有效：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta name="DEscription" contect="my code demo" /> <meta name="Author" contect="[email protected]" /> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta http-equiv="X-UA-Compatible" content="IE=emulateIE8"> <title>js check file size @ jb51.net</title> </head> <body> < img id="tempimg" dynsrc="" src="" style="display:none" /> <input type="file" name="file" id="fileuploade" size="40" /> <input type="button" name ="check" value="checkfilesize" onclick="checkfile()"/> </body> <script type="text/javascript"> var maxsize = 2*1024*1024;//2M var errMsg = "上传的附件文件不能超过2M！！！"; var tipMsg = "您的浏览器暂不支持计算上传文件的大小，确保上传文件不要超过2M，建议使用IE、FireFox、Chrome浏览器。"; var browserCfg = {}; var ua = window.navigator.userAgent; if (ua.indexOf("MSIE")>=1){ browserCfg.ie = true; }else if(ua.indexOf("Firefox")>=1){ browserCfg.firefox = true; }else if(ua.indexOf("Chrome")>=1){ browserCfg.chrome = true; } function checkfile(){ try{ var obj_file = document.getElementById("fileuploade"); if(obj_file.value==""){ alert("请先选择上传文件"); return; } var filesize = 0; if(browserCfg.firefox || browserCfg.chrome ){ filesize = obj_file.files[0].size; }else if(browserCfg.ie){ var obj_img = document.getElementById('tempimg'); obj_img.dynsrc=obj_file.value; filesize = obj_img.fileSize; alert(filesize); }else{ alert(tipMsg); return; } if(filesize==-1){ alert(tipMsg); return; }else if(filesize>maxsize){ alert(errMsg); return; }else{ alert("文件大小符合要求"); alert(filesize); return; } }catch(e){ alert(e); } } </script> </html>
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta name="DEscription" contect="my code demo" />
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<meta name="Author" contect="[email protected]" />
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta http-equiv="X-UA-Compatible" content="IE=emulateIE8">
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<title>js check file size @ jb51.net</title>
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</head>
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<body>
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< img id="tempimg" dynsrc="" src="" style="display:none" />
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<input type="file" name="file" id="fileuploade" size="40" />
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<input type="button" name ="check" value="checkfilesize" onclick="checkfile()"/>
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</body>
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<script type="text/javascript">
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var maxsize = 2*1024*1024;//2M
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var errMsg = "上传的附件文件不能超过2M！！！";
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var tipMsg = "您的浏览器暂不支持计算上传文件的大小，确保上传文件不要超过2M，建议使用IE、FireFox、Chrome浏览器。";
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var browserCfg = {};
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var ua = window.navigator.userAgent;
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if (ua.indexOf("MSIE")>=1){
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browserCfg.ie = true;
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} else if(ua.indexOf("Firefox")>=1){
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browserCfg.firefox = true;
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} else if(ua.indexOf("Chrome")>=1){
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browserCfg.chrome = true;
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}
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function checkfile(){
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try{
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var obj_file = document.getElementById("fileuploade");
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if(obj_file.value==""){
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alert( "请先选择上传文件");
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return;
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}
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var filesize = 0;
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if(browserCfg.firefox || browserCfg.chrome ){
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filesize = obj_file.files[ 0].size;
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} else if(browserCfg.ie){
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var obj_img = document.getElementById('tempimg');
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obj_img.dynsrc=obj_file.value;
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filesize = obj_img.fileSize;
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alert(filesize);
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} else{
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alert(tipMsg);
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return;
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}
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if(filesize==-1){
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alert(tipMsg);
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return;
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} else if(filesize>maxsize){
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alert(errMsg);
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return;
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} else{
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alert( "文件大小符合要求");
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alert(filesize);
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return;
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}
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} catch(e){
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alert(e);
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}
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}
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</script>
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</html>
获取文件名
直接 对象.value 获取文件地址加文件名