add 1

[IntLOG]

Hi, how can I increment a value by one at every click?
I tried the following code but the value always remains 1:

function Foo(){
this.iCount=0;
}
Foo.prototype.addOne = function(){
this.iCount+=1;
}
instance = new Foo();



<button onClick='a=instance.addOne();alert(a);'>Click</button>

How can I reach my goal??

 

[DoomedLung]

try...

function Foo(){

this.iCount++;

}

 

[DoomedLung]

try...

function Foo(){

this.iCount++;

}

This may be a bit clearer...

var Foo = new function(){
this.iCount = 0;
}

function alertI(){
//check the value of 'iCount' before incrementing takes place
alert(Foo.iCount);
//increment iCount by 1
Foo.iCount++;
//check that the new value of 'iCount' has incremented
alert(Foo.iCount);
}