Listing_7.2.js

// Reverses a string.
function reverse(string) {
  return Array.from(string).reverse().join("");
}

// Defines a Phrase object.
function Phrase(content) {
  this.content = content;

  // Returns true if the phrase is a palindrome, false otherwise.
  this.palindrome = function palindrome() {
    let processedContent = this.content.toLowerCase();
    return processedContent === reverse(processedContent);
  }
}