Calling one prototype method inside another in javascript

Question

var Ob = function(){


}

Ob.prototype.add = function(){
    inc()

}

Ob.prototype.inc = function(){
    alert(' Inc called ');

}

window.onload = function(){
var o = new Ob();
o.add();
}

I would like to call something like this,how can i call, ofcourse i put inc as inner function to add I can do that but without having the inner function. how do i do that ?

"I can do that but without that, how do I do that" is awesome. — JJJ, Jan 08 '12 at 15:49
@Juhana forget about literal stuffs and be technical, this is a tech forum. and not grammar discussion. — indianwebdevil, Jan 08 '12 at 16:12

score 83 · Accepted Answer · answered Jan 08 '12 at 15:49

It's easy:

Ob.prototype.add = function(){
    this.inc()
}

Ob.prototype.inc = function(){
    alert(' Inc called ');
}

When you create the instance of Ob properties from prototype are copied to the object. If you want to access the methods of instance from within its another method you could use this.

Calling one prototype method inside another in javascript

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