Function 4: Spell Correction _spellCorrection( string1, string2 ) Create a JavaScript function expression that meets the following requirements: Authored using funetion expression syntax (constant name _spellCorrection) Receives two strings, the first argument is a correct string, the second argument is an incorrect string. • The first argument, the correct string, represents what is supposed to be typed • The second argument, the incorrect string, represents what was provided • The function returns an array of all keys that were missed (what were supposed to be provided) o The returned array should be ordered by when they first appear in the sentence Only one broken key per letter should be listed (see example 6) If second argument, is greater in length than the first argument, the function simply returns "invalid" in the returned array (see example 5). • The first argument could be greater in length than the second (see example 2, example 3) • Console log output is NOT permitted. • The function should pass each of the illustrated examples below at a minimum. _spellCorrection ("GBC", "GBC") → [""] _spellCorrection ("GBC", "GB“) → ["C"] _spellCorrection("GBC", "GC") → ["B", "C"] _spellCorrection ("GB C", "GC") → ["B", " ", "C"] _spellCorrection ("GB", "GBC") → ["invalid"] _spellCorrection ("happy birthday", "hawwy birthday") → ["p"] spellCorrection ("starry night", "starrq light") → ["y", "n"]

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Types of Function

A function is a process or task that does some operation in the program. Some programming languages may contain built-in functions for certain commonly used tasks. Most programming languages also support user-defined functions, which means a user can write their own function to perform some operation. There are some libraries or header files that contain built-in functions for performing certain tasks.