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?

Answer 1

只需使用[]查找对象的属性，然后使用()调用函数

obj[functionToCall]();

Answer 2

您可以通过[]访问对象的属性：

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 )