Generate random words that can be typed with one hand.

onehandword.js

function randomWord(hand, length) {
    var chooseVowel = !!Math.round(Math.random()),
        word = '';

    while (length) {
        if (chooseVowel) {
            word += hand.vowels[Math.floor(Math.random() * hand.vowels.length)];
        } else {
            word += hand.consonants[Math.floor(Math.random() * hand.consonants.length)];
        }

        chooseVowel = chooseVowel ? !!Math.round(Math.random()) : true;
        length -= 1;
    }

    return word;
}

var leftHand = {
    consonants: ['q','w','e','r','t','g','z','x','c','v','b'],
    vowels: ['a','e']
};

var rightHand = {
    consonants: ['p','j','k','l','h','n','m'],
    vowels: ['u','i','o','y']
};

for (var j = 0; j < 100; j++) {
    console.log(randomWord(!!Math.round(Math.random()) ? leftHand : rightHand, 3 + Math.round(Math.random() * 3)));
}