https://www.reddit.com/r/dailyprogrammer/comments/3s4nyq/20151109_challenge_240_easy_typoglycemia/

typoglycemia.js

var input = "According to a research team at Cambridge University, it doesn't matter in what order the letters in a word are, \n"
+ "the only important thing is that the first and last letter be in the right place. \n"
+ "The rest can be a total mess and you can still read it without a problem.\n"
+ "This is because the human mind does not read every letter by itself, but the word as a whole. \n"
+ "Such a condition is appropriately called Typoglycemia.";

function typoglycemia(phrase) {
    return phrase.split(' ').map(scramble).join(' ');
}

function scramble(word) {
    var charArr = word.split('');
    var innerWord = _.shuffle(charArr.slice(1, charArr.length - 1));
    innerWord.unshift(charArr[0]);
    if (charArr.length > 1) {
        innerWord.push(charArr[charArr.length - 1]);
    }
    return innerWord.join('');
}

var result = typoglycemia(input);
console.log(result);