Regular Expression For Phonenumber

Question

HI
In my webpage i have one TextBox Control.
In that textbox when i enter any three digits automatically i have to display an hyphen ("-") after the three digits
E.G:333-333-333-333-333
HOw to write code in Javascript
please help me
Thanks
karthik

Senthilkumar · Answer

If you want to do the validation in the server side then go here http://msdn.microsoft.com/en-us/library/ff650303.aspx Using the javascript you can do like the following: var telephone = document.getElementById(telephone1?); // Regular expression with Indian Telephone format var regExp= /^[0-9]\d{24}-\d{68}$/; if (telephone) { var phoneNumber = telephone.value(); if (phoneNumber.search(regExp) == -1) { alert(Invalid Phone number format); // Clear the field value phoneNumber.value = ''; } } }

Suthish Nair · Answer

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