ASP.NET with C# and SQL SERVER , some vb.net . asp.net examples, asp.net codes, asp.net programs, c# code, sql server queries, important codes.
Friday, 19 October 2012
file upload control validation in javascript
FileUpload1.Attributes.Add("onchange", "return checkFileExtension(this);")
function checkFileExtension(elem) {
var filePath = elem.value;
if(filePath.indexOf('.') == -1)
return false;
var validExtensions = new Array();
var ext = filePath.substring(filePath.lastIndexOf('.') + 1).toLowerCase();
validExtensions[0] = 'jpg';
validExtensions[1] = 'jpeg';
validExtensions[2] = 'bmp';
validExtensions[3] = 'png';
validExtensions[4] = 'gif';
validExtensions[5] = 'tif';
validExtensions[6] = 'tiff';
validExtensions[7] = 'txt';
validExtensions[8] = 'doc';
validExtensions[9] = 'xls';
validExtensions[10] = 'pdf';
for(var i = 0; i < validExtensions.length; i++) {
if(ext == validExtensions[i])
return true;
}
alert('The file extension ' + ext.toUpperCase() + ' is not allowed!');
return false;
}
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment