Categories
JavaScript Answers

How to define a JavaScript regular expression that validates a password that has special characters?

Spread the love

Sometimes, we want to define a JavaScript regular expression that validates a password that has special characters.

In this article, we’ll look at how to define a JavaScript regular expression that validates a password that has special characters.

How to define a JavaScript regular expression that validates a password that has special characters?

To define a JavaScript regular expression that validates a password that has special characters, we can use the (?=.*[0-9]) and (?=.*[!@#$%^&*]) patterns.

For instance, we write

const regularExpression =
  /^(?=.*[0-9])(?=.*[!@#$%^&*])[a-zA-Z0-9!@#$%^&*]{6,16}$/;

to define the regularExpression regex that has both groups.

(?=.*[0-9]) checks that the string has digits.

And (?=.*[!@#$%^&*]) checks that a string has at least 1 special character.

Conclusion

To define a JavaScript regular expression that validates a password that has special characters, we can use the (?=.*[0-9]) and (?=.*[!@#$%^&*]) patterns.

By John Au-Yeung

Web developer specializing in React, Vue, and front end development.

Leave a Reply

Your email address will not be published. Required fields are marked *