文件上传大小js判断

时间：2023-12-18 19:24:02
function fileChange(target) {

     var fileSize = 0;

     if (isIE && !target.files) {

       var filePath = target.value;

       var fileSystem = new ActiveXObject("Scripting.FileSystemObject");

       var file = fileSystem.GetFile (filePath);

       fileSize = file.Size;

     } else {

      fileSize = target.files[0].size;

      }

      var size = fileSize / 1024;

      if(size>2000){

       alert("附件不能大于2M");

       target.value="";

       return

      }

      var name=target.value;

      var fileName = name.substring(name.lastIndexOf(".")+1).toLowerCase();

      if(fileName !="xls" && fileName !="xlsx"){

          alert("请选择execl格式文件上传！");

          target.value="";

          return

      }

    } 

   function filefujianChange(target) {

       var fileSize = 0;

       if (isIE && !target.files) {

         var filePath = target.value;

         var fileSystem = new ActiveXObject("Scripting.FileSystemObject");

         var file = fileSystem.GetFile (filePath);

         fileSize = file.Size;

       } else {

        fileSize = target.files[0].size;

        }

        var size = fileSize / 1024;

        if(size>2000){

         alert("附件不能大于2M");

         target.value="";

         return

        }

        var name=target.value;

        var fileName = name.substring(name.lastIndexOf(".")+1).toLowerCase();

        if(fileName !="jpg" && fileName !="jpeg" && fileName !="pdf" && fileName !="png" && fileName !="dwg" && fileName !="gif" ){

          alert("请选择图片格式文件上传(jpg,png,gif,dwg,pdf,gif等)！");

            target.value="";

            return

        }

      }
function fileChange(target) {

     var fileSize = 0;

     if (isIE && !target.files) {

       var filePath = target.value;

       var fileSystem = new ActiveXObject("Scripting.FileSystemObject");

       var file = fileSystem.GetFile (filePath);

       fileSize = file.Size;

     } else {

      fileSize = target.files[0].size;

      }

      var size = fileSize / 1024;

      if(size>2000){

       alert("附件不能大于2M");

       target.value="";

       return

      }

      var name=target.value;

      var fileName = name.substring(name.lastIndexOf(".")+1).toLowerCase();

      if(fileName !="xls" && fileName !="xlsx"){

          alert("请选择execl格式文件上传！");

          target.value="";

          return

      }

    } 

   function filefujianChange(target) {

       var fileSize = 0;

       if (isIE && !target.files) {

         var filePath = target.value;

         var fileSystem = new ActiveXObject("Scripting.FileSystemObject");

         var file = fileSystem.GetFile (filePath);

         fileSize = file.Size;

       } else {

        fileSize = target.files[0].size;

        }

        var size = fileSize / 1024;

        if(size>2000){

         alert("附件不能大于2M");

         target.value="";

         return

        }

        var name=target.value;

        var fileName = name.substring(name.lastIndexOf(".")+1).toLowerCase();

        if(fileName !="jpg" && fileName !="jpeg" && fileName !="pdf" && fileName !="png" && fileName !="dwg" && fileName !="gif" ){

          alert("请选择图片格式文件上传(jpg,png,gif,dwg,pdf,gif等)！");

            target.value="";

            return

        }

      }

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