Question: Exercise #3 Write a JavaScript code that simulates a simple calculator with four operations: +, -, *, and /. Your code should output an error

Exercise #3 Write a JavaScript code that simulates a simple calculator with four operations: +, -, *, and /. Your code should output an error message if an invalid operator is entered. Your code should also allow the user to use the calculator repeatedly. The JavaScript also should allow the user to stop when -999 is entered as the first number

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