Assigning defined function to an object attribute in javascript

Question

i have a object in javascript and some already defined functions. but how can i assign those functions to the object attributes. i tried different ways. but no hope.. the snippet is given below

// object
var func = {
 a : '',
 b : ''
};

// methods
var test1 = function(i) { console.log(i); }
var test2 = function(i) { console.log(i*100); }

i need to assign the test1 to a and test2 to b. i tried like this.

var func = {
 a : test1(i),
 b : test2(i)
};

obviously the errors i not defined is throwing.. is ther any solution other than the below give sinppet.

var func = {
 a : function(i) { test1(i); },
 b : function(i) { test2(i); }
};

David-SkyMesh · Accepted Answer · 2012-03-28 08:07:56Z

3

This does what you're asking:

var test1 = function(i) { console.log(i); }
var test2 = function(i) { console.log(i*100); }
var func = {
  a: test1,
  b: test2
}

But isn't very good style.

This might be better:

function exampleClass () {}
exampleClass.prototype.a = function(i) { console.log(i); };
exampleClass.prototype.b = function(i) { console.log(i*100); };

var exampleObject = new exampleClass();

answered Mar 28, 2012 at 8:07

David-SkyMesh

5,1721 gold badge35 silver badges41 bronze badges

Sign up to request clarification or add additional context in comments.

4 Comments

Jaison Justus Over a year ago

is their any other proper way.. rather than this var func = { a : function(i) { test1(i); }, b : function(i) { test2(i); } };

David-SkyMesh Over a year ago

It's not clear what you want the final object to contain: should it be an object with methods called 'a' and 'b', or should it contain two keys whose values are the result of calling those functions?

Jaison Justus Over a year ago

this is just for a test purpose, to check is it possible to assign a already written method (eg:test(i)) to a object property(func.a) and call it like func.a(10)

David-SkyMesh Over a year ago

Yes, absolutely possible to do "monkey patching" like this. The functions you add might not have access to local variables defined in the constructor however (the usual pattern for so called "private" attributes).

Collectives™ on Stack Overflow

Assigning defined function to an object attribute in javascript

1 Answer 1

4 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

4 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related