-tlecoeuv/index.js

palindrome detector

module.exports = Phrase;

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

// Defines a Phrase object.

function Phrase(content)
{
  this.content = content;

  this.processedContent = function processedContent()
  {
    return this.letters().toLowerCase();
  }

  this.palindrome = function plaindrome()
  {
    return this.processedContent() === reverse(this.processedContent());
  }

  this.letters = function letters()
  {
    return (this.content.match(/[a-z]/gi) || []).join("");
  }
}

String.prototype.reverse = function()
{
  return Array.from(this).reverse().join("");
}