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    <p>Here's the way to do it without using any external libraries:</p> <pre><code>// Define a class like this function Person(name, gender){ // Add object properties like this this.name = name; this.gender = gender; } // Add methods like this. All Person objects will be able to invoke this Person.prototype.speak = function(){ alert("Howdy, my name is" + this.name); }; // Instantiate new objects with 'new' var person = new Person("Bob", "M"); // Invoke methods like this person.speak(); // alerts "Howdy, my name is Bob" </code></pre> <p>Now the real answer is a whole lot more complex than that. For instance, there is no such thing as classes in JavaScript. JavaScript uses a <code>prototype</code>-based inheritance scheme. </p> <p>In addition, there are numerous popular JavaScript libraries that have their own style of approximating class-like functionality in JavaScript. You'll want to check out at least <a href="http://en.wikipedia.org/wiki/Prototype_JavaScript_Framework" rel="noreferrer">Prototype</a> and <a href="http://en.wikipedia.org/wiki/JQuery" rel="noreferrer">jQuery</a>. </p> <p>Deciding which of these is the "best" is a great way to start a holy war on Stack&nbsp;Overflow. If you're embarking on a larger JavaScript-heavy project, it's definitely worth learning a popular library and doing it their way. I'm a Prototype guy, but Stack&nbsp;Overflow seems to lean towards jQuery.</p> <p>As far as there being only "one way to do it", without any dependencies on external libraries, the way I wrote is pretty much it. </p>
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    1. POWhat techniques can be used to define a class in JavaScript, and what are their trade-offs?
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    1. COBut it doesn't work like X language where I learned the one true way that a thingy that is used to make object instances should work :(
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