Access field data in a <script>-tag?

[buster89]

Hi!

How to access the html-document's field-data from within a <script>-tag?
I am trying to write a dynamic table (in a html-document) that is supposed to contain data that is stored in a <hidden> field i the document. Is it possible to pass the field data from the document to the javascript function that is called inside the <script>-tag?

Regards,
Per M

[epots9]

Hi buster89 welcome to TSDN,

inside your javascript you would want to use:

var value = document.getElementById("id").value;
 

good luck

[buster89]

Hi!
I tried that, but with no success...

This is my code:

The form:

.
.
.
<tr class = "formTr">
<td class = "textBold"><input name="INtext_1" value="" class="text" size="120"></td>
<td class = "textBold" align = "right"><input name="INantal_1" value="" class="text" size=4></td>
<td class = "textBold" align = "right"><input name="INpris_1" value="" class="text" size=4></td>
<td class = "textBold" align = "right">&nbsp;</td>
</tr>
 
<script>skriv()</script>
 
</table>
.
.
.
<input name="inmatat_1" value=";text:z;antal:1;pris:1;summa:1~;text:z;antal:1;pris:3;summa:3~;text:aa;antal:2;pris:3;summa:6~;text:a;antal:45;pris:65;summa:2925~;text:zzzzzzzzzzzzz;antal:99;pris:99;summa:9801~" id="nr1" TYPE="HIDDEN">
.
.
.
 

The javascript:

function skriv(){
var value = document.getElementById("nr1").value;
alert(value)
}
 

Any ideas?

Regards,
Per M

[gits]

call the skriv()-function in onload of your html-body ... document.getElementById() needs a fully loaded dom to work ...

kind regards

[pbmods]

Heya, Per.

Note in your code:

<script>skriv()</script>
 
</table>
.
.
.
<input name="inmatat_1" value=";text:z;antal:1;pris:1;summa:1~;text:z;antal:1;pri  s:3;summa:3~;text:aa;antal:2;pris:3;summa:6~;text:  a;antal:45;pris:65;summa:2925~;text:zzzzzzzzzzzzz;  antal:99;pris:99;summa:9801~" id="nr1" TYPE="HIDDEN">
.
.
.
 

You're calling skrik() before the nr1 input has been created! The browser evaluates the code from top to bottom.

Move your script block after the input in your code, or put the skrik() call in the body's onload attribute (as Gits suggested) to solve this problem.

[buster89]

Yes!
Thank you so much! It did totally slipped my mind that the hidden field containing the data must be located at the top of the form because it does not extist until it has been written to the screen. I thougt tthe problem was the encapsulated script in the script tag.
(Now I am going to skip all the html in the form, and just use one tag that produces the whole form: <script>printForm()</script>.)

Thanks so much for your help - you really saved my day (... and my weekend too)

:)