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.

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? — Michael Geary
– Michael Geary, Commented Oct 3, 2013 at 6:25
I am getting error Uncaught TypeError: Object #<Object> has no method 'memberFun' — CodeCrypt
– CodeCrypt, Commented Oct 3, 2013 at 6:28

Arun P Johny · Accepted Answer · 2013-10-03 06:21:13Z

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

answered Oct 3, 2013 at 6:21

Arun P Johny

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2 Comments

CodeCrypt Over a year ago

Ohh.. srry I was using that only..just typing mistake..but it's not working

Arun P Johny Over a year ago

@CodeCrypt otherwise it is working fine... see the added fiddle... if you look at the browser console it is printing both the messages

Manish Kumar · Accepted Answer · 2013-10-03 06:23:10Z

0

dont use ClassName instead

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

See this mozilla tutorial

answered Oct 3, 2013 at 6:23

Manish Kumar

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