Define a function named Classify that takes a string as input and then determines whether the string is a single word (containing no spaces) or a phrase (containing one or more spaces). The function should return a string value, either 'word' or 'phrase', depending on whether the input string contains any spaces. Once you have developed this function, insert its definition into your string.js library file. Then, modify your strdemo.html page so that it also displays whether the entered text is a word or phrase?