String

indexOf() Returns the position of the first found occurrence of a specified value in a string
lastIndexOf() Returns the position of the last found occurrence of a specified value in a string
match() Searches a string for a match against a regular expression, and returns the matches
replace() Searches a string for a specified value, or a regular expression, and returns a new string where the specified values are replaced
search() Searches a string for a specified value, or regular expression, and returns the position of the match
slice() Extracts a part of a string and returns a new string
substring() Extracts the characters from a string, between two specified indices
toLowerCase() Converts a string to lowercase letters
toUpperCase() Converts a string to uppercase letters
trim() Removes whitespace from both ends of a string

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