js判斷圖片文件大小

火狐:

var maxsize = 5*1024*1024;//5M
            var filesize = 0;  
            filesize =uplist[i].files[0].size;
            console.log("abc",filesize);
            if(filesize>maxsize){  //如果大於5M
                 popAlert('please less than 5M');
                return;

ie8就別想了放到後臺去判斷,anctionXoject, dynsrc什麼的都不識別

還有一個就是獲得文件的真實路徑(其實沒什麼用,ie8又識別不了select() )

//var id = uplist[i].id+ "-file";

var file_upl = document.getElementById(uplist[i].id);
            file_upl.select();
            console.log("aaaaaa",file_upl.value);
            var realpath = document.selection.createRange().text;