Question: Javascript -- Write a program called sum_number.js, that calculates the sum of the numbers contained in a string and displays the result. Use a string

Javascript -- Write a program called sum_number.js, that calculates the sum of the numbers contained in a string and displays the result. Use a string containing 2155 as your input value. For example, given the input , let num = 22, I would sum 2 + 2 for a result of 4.

The program needs to be able to run at a command prompt, it is not to be used in a web browser, and there will be no user input, the only input value will be 2155

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