JavaScript went on to become cult right after its launch due to its extensive list of features. It also gave programmers the chance to give their webpages a more eye-popping look and website visitors were happier than ever.Despite the large number of developers that sing the praises of JavaScript, there are those Internet users who see its dark side.Webpages using multiple JavaScript codes are slow to load and overuse of JavaScript contributes to making webpages look cluttered and ugly. In no time the smart use of JavaScript became a hot topic amongst programmers.