Imagine I am in possession of 100 different objects
var a={name:'a'};
var b={name:'b'};
...
...
var xyz={name:'xyz'};
I am looking to incorporate a method into each object that will execute a specific action for all objects, such as displaying the 'name' property. How can I implement this method into the Object.prototype of these objects simultaneously.
To achieve the same result, you can create a single class for all objects and include a prototype method (check out this source to understand why not a class method).
Here's an illustration based on the given question:
class GameObject {
constructor(obj) {
this.obj = obj;
}
}
var a = new GameObject({
name: 'a'
});
var b = new GameObject({
name: 'b'
});
var xyz = new GameObject({
name: 'xyz'
});
GameObject.prototype.getName = function() {
return this.obj.name;
}
console.log(a.getName());
console.log(b.getName());
console.log(xyz.getName());By leveraging Object.create(), it is possible to establish a custom "prototype" for generating all objects sequentially.
let myPrototype = {
func() {
return this.name;
}
}
let x = Object.create(myPrototype);
x.name = 'x';
// alternatively using Object.assign()
let y = Object.assign({name: 'y'}, myPrototype);
// Object.create assigns to __proto__
console.log(x.__proto__);
// Object.assign doesn't, instead it assigns as a member function
console.log(y.__proto__);
console.log(y.func);
console.log(x.func())
console.log(y.func())If you want to create a basic "template" for a group of objects, you can do it like this:
function exampleObject() {
this.property = arguments[0];
};
In the above code snippet, the "template" (exampleObject) is simply a JavaScript function that takes in N arguments (although other options are possible).
To create objects based on this template, all you need to do is instantiate them as shown below:
var obj1 = new exampleObject('value1');
Check out the example code snippet below for a demonstration.
function exampleObject() {
this.property = arguments[0];
};
var obj1 = new exampleObject('value1');
var obj2 = new exampleObject('value2');
var obj3 = new exampleObject('value3');
console.log(obj1.property);
console.log(obj2.property);
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