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    <p>It's very useful to think of the problem in terms of strings (or arrays of characters), after all that's what you're dealing with. Then when you get a working prototype you can mix it with the DOM and its methods, otherwise it all becomes a mess quickly.</p> <p>The steps and implementation of the game of hangman could be:</p> <ol> <li>Guess a letter. if letter exists replace placeholder with letter or else do nothing.</li> <li>Be able to guess more letters until all letters have been revealed.</li> <li>Inform the user of the progress so far.</li> </ol> <p>An implementation of this idea:</p> <pre><code>var hangman = function(word) { // String revealed so far, as an array var result = word.replace(/./g, '_').split(''); return { guess: function(letter) { // If word contains letter then replace // placeholder with letter for (var i=0; i&lt;word.length; i++) if (word[i].toLowerCase() == letter) result[i] = letter; return this; // chain }, get: function(f) { f = f || function(){}; var done = result.indexOf('_') == -1; return f.call(this, result.join(''), done); } }; }; </code></pre> <p>And you use it like:</p> <pre><code>var soFar = function(result, done) { // Interact with DOM here if (done) { console.log('Congrats! The word is :'+ result); return result; } console.log('Word so far: '+ result); return this; }; // Value from the DOM var word = document.getElementById('#word').value; var game = hangman(word) // assume word = "hello" .guess('l') .guess('o') .get(soFar); //^ Word so far: __ell console.log(game); //=&gt; {guess: [Function], get: [Function]} // Play more game = game .guess('e') .guess('h') .get(soFar); //^ Congrats! The word is: hello console.log(game); //=&gt; hello </code></pre>
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