Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations Chriss Miller on being selected by the Tek-Tips community for having the most helpful posts in the forums last week. Way to Go!

get Value of textbox / input-field

Status
Not open for further replies.
BennySHS

BennySHS

Programmer
Mar 15, 2005
32
DE
Hi there,

I'm trying to read the value of a textbox and/or a hidden input field.

I tried the following code:
alert(document.getElementById('bereich').text);
and alert(document.getElementById('bereich').value);

and both doesnt work. I goolged for a while to find other solutions, but they are all the same as mine.
Is there a obvisiuos mistake i make ?

I use Firefox 1.07 but in IE it doesn't work to.

Hope you can help me,
thx in advance.
greets ben
 
Sort by date Sort by votes
The correct line is your second line.
>[tt]alert(document.getElementById('bereich').value);[/tt]
If it does not, you have mistake elsewhere and the alert has never been reached.
 
Upvote 0 Downvote
As Tsuji says, the correct alert is the second one. You may not be getting the value alerted for many reasons - including missing the id on the input. You also want to make sure you do not attempt to access the DOM until after the page has loaded (and the onload event has triggered).

Cheers,
Jeff

[tt]Jeff's Page [/tt][tt]@[/tt][tt] Code Couch
[/tt]
 
Upvote 0 Downvote
hi guys,

thx a lot for your answers.

>You also want to make sure you do not attempt to access the >DOM until after the page has loaded (and the onload event has >triggered).

Guess that's the problem.

I tried to get the Value of the element in a if-condition at the top of the page.
Its more then logic that the DOM can't access the element right now...

Ok so I'll find another way to do this ;)
Thx a lot!
greets,
ben
 
Upvote 0 Downvote
Replace the alert with a basic alert("Got here"); and see if that fires. Then you know if it is the logic getting to that point or the actual reading of the value.

Make certain your field has an ID tag. Try:
<input type="text" id="bereich" value="Testing">

And at what point do you execute the code with the alert?
As BabyJeffy said, it has to occur after the page has been fully loaded.
Perhaps try even putting your alert in an onload statement in the body tag for testing.

Paranoid? ME?? WHO WANTS TO KNOW????
 
Upvote 0 Downvote
i have two suggestions. you could either

1) place the code at the bottom of your page:

Code: 
<html>
  <head>
    <title>stuff</title>
  </head>
  <body>
    ...

  <script type="text/javascript"><!--
  alert(...);
  //--></script>
  </body>
</html>

or 2) place the code in a function and call it from the body's onload event.


Code: 
<html>
  <head>
    <title>stuff</title>

<script type="text/javascript"><!--
function doSomething() {    
    alert(...);
}
//--></script>
  </head>
  <body onload="doSomething();">
    ...

*cLFlaVA
----------------------------
[tt]your mom goes to college[/tt]
[URL unfurl="true"]http://www.coryarthus.com/[/url]
[banghead]
 
Upvote 0 Downvote
You can also add the parameter defer]/b] to your script tag. That will keep it from running until the page has been loaded.

Tracy Dryden

Meddle not in the affairs of dragons,
For you are crunchy, and good with mustard. [dragon]
 
Upvote 0 Downvote
Tracy,

I hadn't heard of defer before, but upon looking it up, I see it might not have cross-browser support (introduced for IE originally) and, it appears, that great care must be used in using it. More information at
I'm curious if there is a benefit to using defer versus the BODY tag's ONLOAD event.

Opera seems to have something called DOMContentLoaded ( which operates like defer. I'm not sure what other browsers do.

--Dave


~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
O Time, Strength, Cash, and Patience! [infinity]
 
Upvote 0 Downvote
is the id correct? i mean is is spelt correctly and all?
you could try Elements["nameofyourelement"].value right?
 
Upvote 0 Downvote
From a few posts back...
Guess that's the problem.

I tried to get the Value of the element in a if-condition at the top of the page.
Click to expand...

I suggested that he not attempt to access the DOM until the onload event has triggered. His reply indicates he was running some JS in the page as it was loading.

So... unless it turns out to be something else, I think we've cracked this one [smile]

Cheers,
Jeff

[tt]Jeff's Page [/tt][tt]@[/tt][tt] Code Couch
[/tt]
 
Upvote 0 Downvote
Hi there,

thx to all for the much replies and tips.

I'll explain short what I wanted to achive:

On my pages are two forms. Every form has its own submit-button.
Now when submitting form b I wanted to access via JS the content of form A. And the access to the content of form A happened during the pages was not finished loading.

I'll do a workaround to set a hidden-field in form B with the content of form A with an onclick, and then I can access the fields of form B via php.

Sorry guys I guess I should had explained my intention a littlebit earlier, so I would have saved you some writing..

Thx a lot again,
greets ben

ps: sorry for the bad grammar
 
Upvote 0 Downvote
Benny,

If I understand you correctly, then you can just keep the button that submits form B disabled until the forms finish loading.

Code: 
<body [red]onload='document.forms["formB"].submitButton.disabled = false;'[/red] />
...

<input name='submitButton' type='Submit' [red]disabled[/red] />
...

'hope this helps.

--Dave


~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
O Time, Strength, Cash, and Patience! [infinity]
 
Upvote 0 Downvote
Status
Not open for further replies.

Similar threads

Kennelbloke
  • Locked
  • Question
Can't Get Markers to show on Map
Replies
0
Views
1K
Kennelbloke
Kennelbloke
Mike Lewis
  • Locked
  • Question
Anyone here got any experience of Grid.JS (a sortable Javascript grid) 1
Replies
5
Views
2K
Mike Lewis
Mike Lewis
jomat
  • Locked
  • Question
JS to show the timer in html under title instead of in the status bar
Replies
2
Views
915
xwb
xwb
malpa
  • Locked
  • Question
Graph the selection of a html table row
Replies
0
Views
815
malpa
malpa
edgarv
  • Locked
  • Question
Field with numbers and characters get nan
Replies
1
Views
359
ggriffit
ggriffit

Part and Inventory Search

Sponsor

Back
Top