Sometimes, we want to check if a string has white space with JavaScript.

In this article, we’ll look at how to check if a string has white space with JavaScript.

How to check if a string has white space with JavaScript?

To check if a string has white space with JavaScript, we can use the regex test method.

For instance, we write

const hasWhiteSpace = (s) => {
  return /s/g.test(s);
};

to define the hasWhiteSpace function that checks if string s has any whitespaces with /s/g.test.

We use s to match any whitespaces in s.

The g flag makes test check for all instances of whitespaces.

Conclusion

To check if a string has white space with JavaScript, we can use the regex test method.