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    <p>I learned to write JavaScript from reading Douglas Crockford's <a href="http://www.amazon.com/s/ref=nb_ss_2_6?url=search-alias%3Daps&amp;field-keywords=javascript+the+good+parts&amp;x=0&amp;y=0&amp;sprefix=javasc" rel="nofollow noreferrer">JavaScript: The Good Parts</a>. He also has <a href="http://video.yahoo.com/watch/630959/2974197" rel="nofollow noreferrer">a lot</a> of <a href="http://video.yahoo.com/watch/111593/1710507" rel="nofollow noreferrer">stuff</a> <a href="http://video.yahoo.com/watch/111585/1027823" rel="nofollow noreferrer">online</a> you can <a href="http://javascript.crockford.com/" rel="nofollow noreferrer">check out</a>.</p> <p>My basic style is to drop JavaScript's mechanisms for class creation and treat it more like Scheme by creating "objects" with closures and object literal notation. (Not sure if you have any background with Scheme; if not, this approach may feel less natural to you.) For a better explanation of how to do this, Crockford has a short essay <a href="http://javascript.crockford.com/private.html" rel="nofollow noreferrer">here</a>. Here's a short example:</p> <pre><code>var pezDispenser = (function () { var amount = 20; return { dispense: function () { if (amount &gt; 0) } amount -= 1; alert('delicious pez!'); } else { alert('no more pez!'); } } }; }()); pezDispenser.dispense(); </code></pre> <p>I've found this to be a pretty powerful and flexible approach.</p> <p>Crockford also has a general style guide for the language <a href="http://javascript.crockford.com/style1.html" rel="nofollow noreferrer">here</a> and <a href="http://javascript.crockford.com/style2.html" rel="nofollow noreferrer">here</a>.</p> <p>Hope this helps.</p>
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    1. POSimple example of Javascript good programming style?
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    1. USSean Devlin
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    1. COI don't get it. Why didn't you just put amount as a variable of the returned object, instead of having it in the external scope ?
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      1. USStefano Borini
    2. COThis way 'amount' becomes effectively a private variable of the returned object. It's inaccessible to outsiders. Also, here I made the closure an anonymous function, but consider if I had made it a regular function. It would be a function that generates pez dispensers, each with its own private amount variable.
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      1. USSean Devlin
    3. COOpinion: I don't like the style of "private by technology". I am a python user and I follow the philosophy that a private variable is anything having a prefix underscore, and that's it. However (fact): this way you created a singleton. You cannot create another instance unless you do as you said.
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      1. USStefano Borini
 

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