Validate File size before upload

Question

I need to validate the file which is to be uploaded to the server. The validation must be done before uploading it. i.e., validation completed at client side. This task shou

Answer 1

You can achieve by using jquery:

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Attachment (8 MB only)

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jQuery(document).ready(function () {


jQuery('#Attachment').bind('change', function () {
                            //fileUpload = 0;
                            var iSize = (this.files[0].size / 1024);
                            if (iSize / 1024 > 1) {
                                if (((iSize / 1024) / 1024) > 1) {
                                    fileUpload = 0;
                                } else {
                                    iSize = (Math.round((iSize / 1024) * 100) / 100);
                                    if (iSize <= 8) {
                                        fileUpload = 1;
                                    } else {
                                        fileUpload = 0;
                                    }
                                }
                            } else {
                                fileUpload = 1;
                            }
                            if (fileUpload == 0) {
                               // alert("Your attachment exceeded 8MB.");
                                jQuery('#attached').html('Your attachment exceeded 8MB.');
                                jQuery('#Attachment').val('');
                            }

                        });

                    });