Can class methods be defined before the constructor in Javascript?
For example:
MyObj.prototype.fcn = function () {};
MyObj = function () {};
I am looking to keep instance methods in a separate file, but need them to load before the constructor.
An ideal solution would not rely on the order in which files are loaded.
Thank you!
UPDATED VERSION
This code snippet demonstrates the concept of prototypal inheritance in JavaScript. In "File 1", a constructor called Dummy is created with some properties. Then, in "File 2", these properties are inherited by a new constructor named BConstructor as shown below:
// File 1
var Dummy = function () { /* A */}; // Dummy needs to be able to refer globally
Dummy.prototype.methodA = function () {alert(this.constructor);};
// File 2
var BConstructor = function () { /* B */};
BConstructor.prototype = new Dummy(); // Include properties of Dummy too
BConstructor.prototype.methodB = function () {alert(this.constructor);};// Create more properties if needed
BConstructor.prototype.constructor = BConstructor; // Make sure BConstructor will be the constructor of future-created objects
var a = new BConstructor();
a.methodA();
a.methodB();
Modifying the prototype of an object that has not yet been defined is not permitted.
Consider postponing the assignment of prototype methods until the document has finished loading.
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