--JavaScript-- In this problem, you'll be given a string. If it contains every vowel, excluding y, return true. If it does not contain every vowel, return false. For the purposes of this problem, all letters will be lowercase, so do not worry about checking for uppercase vowels. For instance, if the string is : "giant sequoia", return true. If the string is : "hello world", then return false. Please return true or false keywords.