Calling methods from a Javascript Object

Question

If I have

var function_holder = { 
 someFunction: function () { } 
}; 

How do I call someFunction.

Also is there a way to write someFunction outside of function_holder?

Thanks

• dMb: function_holder.someFunction(); I don't understand your second question

Answer 1

function_holder is an object, someFunction is a method.

Call function_holder.someFunction(); to invoke the method.

You can define the function seperately as either a function declaration

function someFunction() {
 // code
} 

or a function variable

var someFunction = function () {
 // code
}

Answer 2

Call it:

function_holder.someFunction()

From outside:

function other() {
 alert('Outside');
}
var obj = {
 someFunction: other
};
obj.someFunction(); // alerts Outside;

Answer 3

You could write this instead:

function_holder.someFunction = function() { }

You can call the function this way:

function_holder.someFunction()

Answer 4

call it:
function_holder.someFunction() This will execute the function like the others say.

I think I have an idea what you mean by "write someFunction outside of function_holder?"..

var theFunc = function(){};
function_holder = {};
function_holder.someFunction = theFunc;

There are lots of ways to do anything in javascript.

Answer 5

There are a couple different ways to do what you want to do.

function function_holder() {
 this.my_function = function() {};
};

You would call this by instantiating function holder as such.

var fc = new function_holder();
fc.my_function();

Or alternatively you could do it this way.

function function_holder() {};
function_holder.prototype.my_function = function() {};

You would call this the following way:

function_holder.my_function();

• Raynos: That's wrong. function_holder is an object and new <Object> throws a type error