CODEWITHSUNDEEP
javascriptfunctionobject
cattt
cattt

Reputation: 39

Creating a “method” method on an object

Can someone explain me how they are creating a "method" method on an object.

var foo = {};

foo.method = function(name, cb){
  this[name] = cb;
};

Upvotes: 1

Views: 46

Answers (1)

Jack Bashford
Jack Bashford

Reputation: 44145

They're assigning the key method to a function - that's a method. If you're wondering how the key method is used, it's because it's not a reserved keyword in JavaScript.

The actual method creates a new method with the provided name, and sets it to the cb. (This can also be used to make properties, not just methods).

var foo = {};

foo.method = function(name, cb) {
  this[name] = cb;
};

foo.method("sayHello", () => console.log("Hello!"));
foo.sayHello();

Upvotes: 3

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