Compulsory Task 1 Follow these steps: Open up alternative.js. This program uses a set of test strings and calls a method alternativeString on each string. This method inputs a string and outputs a modified string with each alternate character as an uppercase character and each other alternate character a lowercase character. For example, the string Hello World would become HeLlO WoRlD Fill in the code for the alternativeString method. Do not modify any other aspect of the script.