…al methods

• My submission is formatted according to the guidelines in the contributing guide
• My submission follows the code style guidelines
• My addition is added to the bottom of a category (for general methods, this location starts before the categories start)
• My submission contains no more than 10 new methods
• My submission has relevant documentation with a useful description, code example, parameter information, and return type (formatted like the rest of the documentation), and this documentation is added at the bottom of a category
• My documentation for each method does not have more than 2500 characters (the recommended size of documentation for a single method is 250-1000 characters, the 2500 character limit per method is for more complex functions)
• My code and documentation are grammatically and syntactically correct and are written in English only
• My submission has at least 1 test case for each method, added to the relevant testing category at the bottom of a category
• My submission passes all test cases (npm test)
• I have ONLY edited ./helpful.js, ./test/tester.js, and/or ./README.md (exceptions can be made in rare circumstances)
• I have NOT edited ./helpful.min.js
• All the methods, documentation, and tests cases have been added in the same order
• I have searched the repository for any relevant issues or pull requests
• Any category I am creating has the minimum requirement of 3 methods (check this box anyways if you are not creating a category)
• Any category I am creating has relevant methods (check this box anyways if you are not creating a category)