--- title: containsWhitespace tags: string,regexp,beginner --- Checks if the given string contains any whitespace characters. - Use `RegExp.prototype.test()` with an appropriate regular expression to check if the given string contains any whitespace characters. ```js const containsWhitespace = str => /\s/.test(str); ``` ```js containsWhitespace('lorem'); // false containsWhitespace('lorem ipsum'); // true ```