How to call class member function in javascript

Question

I am new to javascript, and I have defined class like the following way-

function ClassName()
{
 //Some code here
}
ClassName.prototype.memberFun = function(){
 alert("I'm in memberFun()");
}
ClassName.prototype.memberFun1 = function(){
 alert("I'm in memberFun1()");
 //Trying to call above function like
 this.memberFun();
}

Now, I am creating the object and calling the function here-

var ob = new ClassName();
ob.memberFun1();

But it is not working. I am getting an error saying-

Uncaught TypeError: Object #<Object> has no method 'memberFun'

Any help will be appreciated.

• Michael Geary: Your code should work. There is nothing wrong with it. When I paste it in the the Chrome console I get your two alerts. What is not working?
• Manish Kumar: Yah in my case its working what i have suggested
• CodeCrypt: I am getting error Uncaught TypeError: Object #<Object> has no method 'memberFun'

Answer 1

javascript does not have a variable type like ClassName in java... all variables are declared using var

var ob = new ClassName();
ob.memberFun1()

Demo: Fiddle

• CodeCrypt: Ohh.. srry I was using that only..just typing mistake..but it's not working
• Arun P Johny: @CodeCrypt otherwise it is working fine... see the added fiddle... if you look at the browser console it is printing both the messages

Answer 2

dont use ClassName instead

var ob = new ClassName();
ob.memberFun1();

See this mozilla tutorial