Most common word in text. Simple algorithm.

most-common-word-in-text.js

var text = "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Suspendisse iaculis nunc a quam condimentum, eget vestibulum magna aliquet. Cras a quam id odio congue viverra id nec purus. Proin in pharetra arcu. Aliquam vel vulputate urna. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nulla nec rutrum sem. Praesent a mi metus. Integer vitae facilisis nulla, a lacinia velit. Quisque tempor varius lectus nec finibus. Sed quis quam tempor justo mattis mattis. Proin vel ante risus. Sed maximus scelerisque commodo. Pellentesque ut placerat nisi.";

function findMostCommonWordInText(text) {
	var wordCounter = {},
        max = 1,
        mostCommonWord = "";
  
    text.split(" ").forEach(function(word) {
      if (wordCounter[word]) {
        wordCounter[word] += 1;
      } else {
        wordCounter[word] = 1;
      }
    });

    for (var word in wordCounter) {
      if (wordCounter[word] > max) {
        mostCommonWord = word;
        max = wordCounter[word];
      } 
    }
    console.log(mostCommonWord);
}

findMostCommonWordInText(text);