Write a JavaScript function that accepts two parameters/arguments, a string and a letter (string) and the...

  

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Write a JavaScript function that accepts two parameters/arguments, a string and a letter (string) and the function will count the number of occurrences of the specified letter within the string and return that value. Example: the first argument is "hello" and the second parameter is "I". The function should return 2 because there are two is in "hello". Must use a function. The first parameter will be at least one character in length. The second parameter will be exactly one character in length and will always be a letter. The function should not care about case... "h" and "H" should both be counted as the same. Write a JavaScript function that accepts two parameters/arguments, a string and a letter (string) and the function will count the number of occurrences of the specified letter within the string and return that value. Example: the first argument is "hello" and the second parameter is "I". The function should return 2 because there are two is in "hello". Must use a function. The first parameter will be at least one character in length. The second parameter will be exactly one character in length and will always be a letter. The function should not care about case... "h" and "H" should both be counted as the same.

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