Define a function named Rotate that takes a string as input and returns a copy of that string in which all characters are rotated one position to the left. This means that the second character should be shifted from index 1 to index 0, the third character should be shifted from index 2 to index 1, and so on. The first character should be shifted so that it appears at the end of the string. For example, the function call Rotate('abcde') should return the string 'bcdea'. Insert this function definition into your string.js library file. Then, modify your strdemo.html page so that it also displays the rotated string when the button is clicked?