why can i not divide this?

Hi,

I want to get the height of an element and dividing by 2, but i don't know
how.
See the code:
<DIV ID="myDiv" STYLE="position:absolute; height:200">
....</div>

<script>
myObj = document.getElementById("myDiv").style;
dw = myObj.height / 2;
alert(dw)
</script>

Without dividing, i get '200px'.
With dividing, it produces "NaN".
I also tried dw=parseFloat( myObj.height / 2).

Thanks for help.
Dan.

It should be

dw = parseFloat(myObj.height) / 2;


"Dan" <no (AT) mail (DOT) xy> wrote

Hi,

I want to get the height of an element and dividing by 2, but i don't know
how.
See the code:
DIV ID="myDiv" STYLE="position:absolute; height:200"
...</div

script
myObj = document.getElementById("myDiv").style;
dw = myObj.height / 2;
alert(dw)
/script

Without dividing, i get '200px'.
With dividing, it produces "NaN".
I also tried dw=parseFloat( myObj.height / 2).

Thanks for help.
Dan.

Vjekoslav Begovic wrote on 24 jul 2003 in comp.lang.javascript:

"Dan" <no (AT) mail (DOT) xy> wrote in message
news:bfpi0q$mmi$1 (AT) reader11 (DOT) wxs.nl...
Hi,

I want to get the height of an element and dividing by 2, but i don't
know how.
See the code:
DIV ID="myDiv" STYLE="position:absolute; height:200"
...</div

script
myObj = document.getElementById("myDiv").style;
dw = myObj.height / 2;
alert(dw)
/script

Without dividing, i get '200px'.
With dividing, it produces "NaN".
I also tried dw=parseFloat( myObj.height / 2).
It should be

dw = parseFloat(myObj.height) / 2;

or

dw = myObj.offsetHeight / 2

(IE6)

--
Evertjan.
The Netherlands.
(Please change the x'es to dots in my emailaddress)

On 03.7.24 10:26 PM, Vjekoslav Begovic wrote:

It should be

dw = parseFloat(myObj.height) / 2;

It should also be STYLE="position:absolute; height:200px"

The height attribute is a string, not a number. That's why you get "NaN"
when you divide it by 2 ("NaN" = "Not a Number")

--
Philip Ronan
phil.ronanzzz (AT) virgin (DOT) net
(Please remove the "z"s if replying by email)