Domain Name Validation Using Javascript. Domain Name validation takes into account of the following criteria. A-z0-9 - a-z0-9 a-z 2.
Check whether a string looks like a valid domain name. If a-zA-Z0-9 a-zA-Z0-9- 161 a-zA-Z0-9. If namenull name.
Given string str the task is to check whether the given string is a valid domain name or not by using Regular Expression.
Below is regular expression to validate domain specific email address. If myformmyphonevalue myformmyphonevalue null alert Phone number is mandatory. This is done to speed up the data processing on the server-side. In the following code snippet we will show you how to validate the first and last name with Regular Expression using JavaScript.