Therefore the return false statement works similar to the Required Field validator of ASP. The entire function will be as follows: I hope you have understood it then the Solution Explorer will look like as in the following: In the preceding Solution Explorer, their are two ASP.Net pages, User and User along with the User Java Script file.
to avoid any erroneous data to be inserted into the database. So let us learn some basics because I have written this article only focusing on beginners and students. Example I hope you now understand the basics of validation in Java Script, now let us create the one sample web application that demonstrates how to do validation.
any of the more common questions asked of the VB Pro involve formatting and validating data.
In this 10-Minute Solution, you'll learn how to validate and format a phone number.
' int Result = In Str(1, str Temp, "x", vb Text Compare) If int Result 0 Then str Extension = Mid(str Temp, int Result 1) str Phone = Left(str Temp, int Result - 1) Else str Phone = str Temp End If If Left(str Phone, 1) = "1" Then str Phone = Mid(str Phone, 2) End If If Len(str Phone) 10 Then Msg Box "Please enter a valid telephone number.", vb Exclamation Cancel = True Exit Sub End If ' ' Prepend the default area code ' If Len(str Phone) = 7 Then str Phone = Default Area Code & str Phone End If ' ' Build the new phone number ' txt Phone = "(" & Left(str Phone, 3) & ") " _ & Mid(str Phone, 4, 3) & "-" _ & Right(str Phone, 4) ' ' Add the extension, if any ' If str Extension I used a default area code of 703, which you can obviously change as needed.
If you're going to be using the application in different locations, you may want to store that information with the application user's profile, similar to the way that Windows stores your favorite locations for dialing.
The code first removes all the grouping and separator characters, except for the X, which marks the beginning of an extension.
It was best to convert uppercase X's to lowercase x's for purposes of comparison.The computer is now smart enough to automatically translate data into the format that has been pre-selected for use in that system, saving timeand no doubtmoney.Eric Smith has been a senior consultant with Andersen Consulting, specializing in client/server development using Oracle and Visual Basic, and was senior content developer (Visual Basic) at before it was purchased by Fawcette Technical Publications. In this article we will learn about client-side validation that is done using Java Script. In the preceding syntax function is the keyword provided by the Java Script to declare a function and the Vildate Data() is the function name, now write the code inside the function as in the following.Client side validation Validation done in the browser before sending the form data to the server using Java Script, j Query and VBScript is called client-side validation. Let us first create the web application with two web pages We are adding two web pages because our requirement is, in the first web page there is form data to be filled in by the user and only after validating the form data, the form will be redirected to the next page.Because there are so many valid formats, you're going to have to set some rules for reformatting these phone numbers: 1.