Validating email in javascript using regular expression

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[email protected] – “.a” is not a valid tld, last tld must contains at least two characters 4. mkyong()*@– email’s is only allow character, digit, underscore and dash 8.

[email protected]– email’s first character can not start with dot “.” 7.

Using regular expressions the entered content can be validated with advanced conditions like the string entered shouldn’t contain spaces, special characters, numbers, uppercase or lowercase etc.

Once you learn the art of using regular expressions you can use it with many computer languages.

A while ago I put up a Password Strength Checker using Java Script and Regular Expressions.

On that same note, you can also check the structure of an email address utilizing the same regular expression (regex) methodology.

One of the best (and maybe only valid) use-cases is when you would like to teach regexes.After reading this article you’ll be able to do advanced javascript validation using regular expressions a.k.a.Reg Exp for basic javascript validation read Javascript Validation – Textbox Combobox Radiobutton Checkbox.Here’s a Java example to show you how to use regex to validate email address. [email protected], [email protected], [email protected] [email protected], [email protected], [email protected] 3. [email protected]%*– email’s tld is only allow character and digit 9. [email protected]– email’s last character can not end with dot “.” 11. [email protected] -email’s tld which has two characters can not contains digit Here’s a unit test using test NG.Before we try to answer that question, let me point out that there are already, ready-made and high-quality solutions for these problems.

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