Hitting the Jackpot

Create a function that takes in an array (slot machine outcome) and returns true if all elements in the array are identical, and false otherwise. The array will contain 4 elements.

Examples

testJackpot(["@", "@", "@", "@"]) ➞ true

testJackpot(["abc", "abc", "abc", "abc"]) ➞ true

testJackpot(["SS", "SS", "SS", "SS"]) ➞ true

testJackpot(["&&", "&", "&&&", "&&&&"]) ➞ false

testJackpot(["SS", "SS", "SS", "Ss"]) ➞ false

Notes

The elements must be exactly identical for there to be a jackpot.