Form Validation

What is Form Validation ?

Sometimes people forget to fill in the form properly. Form validation will help them by adding some basic checks to make sure that people will fill the form correctly.

We use Regex (Regular Expression) to validate our data.

The regular expression /^[^\s@]+@[^\s@]+\.[^\s@]+$/ checks if the provided email address adheres to the following rules:

• ^[^\s@]+: The email must start with one or more characters that are not whitespaces (\s) or '@'.

• @: There must be a single '@' symbol in the email address.

• [^@]+: Following the '@' symbol, there must be one or more characters that are not '@'.

• \.: There must be a dot '.' after the '@' symbol and its subsequent characters.

• [^\s@]+$: The email must end with one or more characters that are not whitespaces or '@'.

As you see the result below, the email is invalid because it does not match the regular expression to add dot after @

If the data is match the Regex, that data is validate as a valid likes this: