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Hi,

my html code is :

<div style="position:absolute;top:10px;left:10px">
<table>
<tr>
<td id="TdBarreBouton1">
<hr>
</td>
</tr>
<tr>
<td id="TdBarreBouton2">
<button id="btn_inserer">Bouton</button>
</td>
</tr>
</table>
</div>

I want to know the postion of the button.

My javascript code is :

boutonInserer = document.all.btn_inserer;
pos_left = document.all.TdBarreBouton2.offsetLeft +
boutonInserer.offsetLeft;
pos_top = document.all.TdBarreBouton2.offsetTop +
boutonInserer.offsetTop;

But, the problem is if I move the button in the TD (id=TdButton1), I
MUST change the javascript code.
Is it possible to calculate the position of the button without
indicating the name of the TD in the javascript code ?

Thanks.

You can use "parentNode" to get the parent TD of your button. E.g.

var boutonInserer = document.getElementById("btn_inserer");
var TdBarreBouton2 = boutonInserer.parentNode;

regards,

wp.

On Mar 22, 10:24 am, "wisestpotato" <wisestpot...@googlemail.com>
wrote:
> You can use "parentNode" to get the parent TD of your button. E.g.
>
> var boutonInserer = document.getElementById("btn_inserer");
> var TdBarreBouton2 = boutonInserer.parentNode;
>
> regards,
>
> wp.

Thanks.

It's ok.

On Mar 22, 2:17 am, louv...@gmail.com wrote:
> Hi,
> I want to know the postion of the button.
>
> My javascript code is :
>
> boutonInserer = document.all.btn_inserer;
> pos_left = document.all.TdBarreBouton2.offsetLeft +
> boutonInserer.offsetLeft;
> pos_top = document.all.TdBarreBouton2.offsetTop +
> boutonInserer.offsetTop;

use offsetParent

On 22 Mar, 17:08, "scripts.contact" <scripts.cont...@gmail.com> wrote:
> On Mar 22, 2:17 am, louv...@gmail.com wrote:
>
> > Hi,
> > I want to know the postion of the button.
>
> > My javascript code is :
>
> > boutonInserer = document.all.btn_inserer;
> > pos_left = document.all.TdBarreBouton2.offsetLeft +
> > boutonInserer.offsetLeft;
> > pos_top = document.all.TdBarreBouton2.offsetTop +
> > boutonInserer.offsetTop;
>
> use offsetParent

Be wary of offsetParent. It returns the parent element with respect to
positioning. So, if the current element is absolutely positioned, the
offsetParent may well be the document root node. If you want to be
sure of getting the parent node of the current element, irrespective
of any stylesheet positioning rules, then use parentNode instead.

wp.