JavaScript: Dynamically call a function inside an object

Question

I have an object that contains many functions

var obj = {
 'Func1': function() {},
 'Func2': function() {},
 'Func3': function() {},
 'Func4': function() {}
...
}
var functionToCall = 'Func2';

I want to dynamically call a function inside the object using a string value. Any idea how to achieve this in JavaScript?

• elclanrs: See property accessors
• Mike Cluck: Possible duplicate of Accessing a JSON property (String) using a variable
• EGN: @elclanrs: Thanks, exactly what I was looking for

Answer 1

Just look up the object's property using [], then use () to call the function

obj[functionToCall]();

Answer 2

You can access properties of object by []:

obj['Func2']();

Answer 3

This is all there's to it :

var obj = {
 'Func1': function() { alert('Func1') },
 'Func2': function() { alert('Func2') },
 'Func3': function() { alert('Func3') },
 'Func4': function() { alert('Func4') }
}
var functionToCall = 'Func2';
obj[functionToCall]();

(see also this Fiddle)