Returns the character at the specified index.

Checks if a string ends with the provided substring.

Executes a search on a string using a regular expression pattern, and returns an array containing the results of that search.

Checks if value is in collection.

Calls a defined callback function on each element of an array, and returns an array that contains the results.

Matches a string with a regular expression, and returns an array containing the results of that search.

Returns a String value that is made from count copies appended together. If count is 0, the empty string is returned.

Replaces matches for from in string or RegExp with to.

Returns a section of a value.

Checks if a string starts with the provided substring.

whether a given string matches a given regular expression.