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In forms when using email ID fields it is a good idea to use client side validation along with your programming language validation.
The following example shows how you can validate an email address for a form.
Java script can check the regular expression pattern for valid email address.
We have different regular expression patterns for validating email address.
ASCII defined 127 different alphanumeric characters that could be used on the internet: numbers (0-9), English letters (A-Z), and some special characters like ! ANSI (Windows-1252) was the original Windows character set, with support for 256 different character codes.
The idea is to create a set of “validation descriptors” associated with each element in a form.For ‘selections’ like drop down and radio group, use an appropriate validation like ‘dontselect’ or ‘selone_radio’.Below is simple regular expression to validate an email address.In this page we have discussed how to validate an email using Java Script : An email is a string (a subset of ASCII characters) separated into two parts by @ symbol.Then click on Properties buttons, go to the Driver tab and press on the Update Driver button and point the path to C:\windows\inf folder.