This method returns true if the string contains the characters, and false if not. Note : The Check if a string includes "world", starting the search at position
Nov 7, Either function will handle the case DRAX mentioned that is, they both check if ( A) the variable is a string literal or (B) it's an instance of the String object.
Feb 2, The typeof operator returns a string indicating the type of the unevaluated operand.
Dec 7, The test() method executes a search for a match between a regular expression and a specified string. Returns true or false.
Dec 18, The includes() method determines whether one string may be found of this function in Firefox 17, the behavior of that check changed in a way.