--- title: removeAllWhitespaces tags: string,regexp,beginner --- Returns a string removing any and all whitespaces. - Use `String.prototype.replace()` with a regular expression to replace any and all occurrences of whitespace characters with a empty string. ```javascript const removeAllWhitespaces = (string) => { if(!string || typeof string !== "string") return ""; return string.replace(/\s+/g, ""); // trimming the whitespace, if any } ``` ```javascript removeAllWhitespaces(" Hello, I've a lot of white spaces. \n Including a line break."); // "Hello,I'vealotofwhitespaces.Includingalinebreak." ```