ou are to write a JavaScript program that meets the following requirements. 1. Your program first starts by utilizing an alert to Welcome the user. 2. Directly after welcoming the user, your program prompts the user for their first name. You must ensure  your solution validates the users input. In this instance, valid input, is any name that is not empty (length  greater than 0). This is a required field. If your solution detects invalid input, your program must loop to allow the user to re-enter the first name input, this process continues indefinitely, until valid input is detected

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Variables and Constant

Constants and variables are widely used in mathematical equations and expressions. They are also commonly found in the domain of programming, where each language has its own way to differentiate between a constant and a variable. Since they have all sorts of applications, knowing their differences is a good place to start.