Write, test, and debug (if necessary) JavaScript scripts for the problems that follow. When required to write a function, you must include a script to test the function with at least two different data sets. In all cases, for testing, you must write an HTML file that references the JavaScript file.

4.8 Function : no_zeros Parameter : An array of numbers. Result : The given array must be modified to remove all zero values. Returns : true if the given array included zero values; false otherwise.

4.9 Function : e_names Parameter : An array of names, represented as strings. Returns : The number of names in the given array that end in either "ie" or "y" .

4.10 Function : first_vowel Parameter : A string. Returns : The position in the string of the leftmost vowel.