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@spjwebster
Created February 16, 2014 08:33
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function augment(parent, properties) {
var child = properties.constructor || function() {
return parent.apply(this, arguments);
};
var Surrogate = function(){ this.constructor = child; };
Surrogate.prototype = parent.prototype;
child.prototype = new Surrogate;
for (var key in properties) {
child.prototype[key] = properties[key];
}
return child;
};
// ... the nasty bit of JavaScript-specific business there being the intermediate Surrogate, so that you don't need a concrete instance of the parent class to be instantiated, in order to set your prototype chain. Used like so:
var Person = augment(Model, {
sortableName: function() {
return this.lastName + ', ' + this.firstName;
}
});
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