object literal as prototype property

[dezza]

Hi, having some problems with using object literals when creating properties of a prototype object- no idea why this isn't working s expected - i'm sure i'm just missing something really simple.

Any help greatly appreciated!!

<script language=javascript>
function my_object(name)
{
	this.name=name
}
my_object.prototype.dimensions= {w:100,h:100}



var x = new my_object('car')
var y = new my_object('bus')

x.dimensions.w=50

alert(x.dimensions.w)  // am expecting this to be 50
alert(y.dimensions.w) // am expecting this to be 100, inherited from the prototype
</script>

[dreaken667]

You're changing the prototype's dimensions instead of the instance's dimensions on line 13 because you've defined the dimensions property outside your object.

<script language=javascript>
function my_object(name)
{
	this.name=name
	this.dimensions= {w:100,h:100}
}

var x = new my_object('car')
var y = new my_object('bus')

x.dimensions.w=50

alert(x.dimensions.w)
alert(y.dimensions.w)
</script>

Hi, having some problems with using object literals when creating properties of a prototype object- no idea why this isn't working s expected - i'm sure i'm just missing something really simple.

Any help greatly appreciated!!

<script language=javascript>
function my_object(name)
{
	this.name=name
}
my_object.prototype.dimensions= {w:100,h:100}



var x = new my_object('car')
var y = new my_object('bus')

x.dimensions.w=50

alert(x.dimensions.w)  // am expecting this to be 50
alert(y.dimensions.w) // am expecting this to be 100, inherited from the prototype
</script>