?
Solved

Javascript Checkboxes & Drop Down Populate Hidden Field

Posted on 2004-04-11
5
Medium Priority
?
1,488 Views
Last Modified: 2007-12-19
I need a function that "onChange" will write to my hidden fields (multiple values/selections ok).  There is a hidden text field for the checkboxes and one for the drop down.  Any help someone could provide would be appreciated. Thank you

<html>
<head>
<title>What I want to eat</title>
</head>

<body>
<form name="pick_up_request_form">
<table width="600" border="0" cellspacing="0" cellpadding="0">
  <tr>
    <td>Steak
      <input name="whatIWantToEat" type="checkbox" id="whatIWantToEat" value="checkbox"></td>
  </tr>
  <tr>
    <td>Pizza
      <input name="whatIWantToEat" type="checkbox" id="whatIWantToEat" value="checkbox"></td>
  </tr>
  <tr>
    <td>Spaghetti
      <input name="whatIWantToEat" type="checkbox" id="whatIWantToEat" value="checkbox"></td>
  </tr>
  <tr>
    <td>Dog Food
      <input name="whatIWantToEat" type="checkbox" id="whatIWantToEat" value="checkbox"></td>
  </tr>
  <tr>
    <td>Lobster
      <input name="whatIWantToEat" type="checkbox" id="whatIWantToEat" value="checkbox"> <input name="whatIWantToEatSelection" type="hidden" id="whatIWantToEatSelection"></td>
  </tr>
  <tr>
    <td>&nbsp;</td>
  </tr>
  <tr>
    <td><select name="select">
      <option selected>--Select One--</option>
      <option value="Steak">Steak</option>
      <option value="Pizza">Pizza</option>
      <option value="Spaghetti">Spaghetti</option>
      <option value="Dog Food">Dog Food</option>
      <option value="Lobster">Lobster</option>
    </select> <input name="whatIWantToEatSelection2" type="hidden" id="whatIWantToEatSelection2"></td>
  </tr>
</table>
</form>
</body>
</html>
0
Comment
Question by:xcusmwah
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
5 Comments
 
LVL 1

Accepted Solution

by:
bkiahg earned 200 total points
ID: 10803891
Not sure why you would want to do this but...

<html>
<head>
<title>What I want to eat</title>
</head>

<body>
<form name="pick_up_request_form">
<table width="600" border="0" cellspacing="0" cellpadding="0">
  <tr>
    <td>Steak
      <input name="whatIWantToEat" type="checkbox" id="whatIWantToEat" value="checkbox" onClick="JavaScript:document.pick_up_request_form.whatIWantToEatSelection.value='Steak'"></td>
  </tr>
  <tr>
    <td>Pizza
      <input name="whatIWantToEat" type="checkbox" id="whatIWantToEat" value="checkbox" onClick="JavaScript:document.pick_up_request_form.whatIWantToEatSelection.value='Pizza'"></td>
  </tr>
  <tr>
    <td>Spaghetti
      <input name="whatIWantToEat" type="checkbox" id="whatIWantToEat" value="checkbox" onClick="JavaScript:document.pick_up_request_form.whatIWantToEatSelection.value='Spaghetti'"></td>
  </tr>
  <tr>
    <td>Dog Food
      <input name="whatIWantToEat" type="checkbox" id="whatIWantToEat" value="checkbox" onClick="JavaScript:document.pick_up_request_form.whatIWantToEatSelection.value='Dog Food'"></td>
  </tr>
  <tr>
    <td>Lobster
      <input name="whatIWantToEat" type="checkbox" id="whatIWantToEat" value="checkbox" onClick="JavaScript:document.pick_up_request_form.whatIWantToEatSelection.value='Lobster'">
<input name="whatIWantToEatSelection" type="text" id="whatIWantToEatSelection"></td>
  </tr>
  <tr>
    <td>&nbsp;</td>
  </tr>
  <tr>
    <td><select name="select" onChange="JavaScript: document.pick_up_request_form.whatIWantToEatSelection2.value=document.pick_up_request_form.select.value">
      <option selected>--Select One--</option>
      <option value="Steak">Steak</option>
      <option value="Pizza">Pizza</option>
      <option value="Spaghetti">Spaghetti</option>
      <option value="Dog Food">Dog Food</option>
      <option value="Lobster">Lobster</option>
    </select> <input name="whatIWantToEatSelection2" type="text" id="whatIWantToEatSelection2"></td>
  </tr>
</table>
</form>
</body>
</html>

Just change the input types back to hidden and viola.
0
 

Author Comment

by:xcusmwah
ID: 10803918
Perfect, thank you
0
 
LVL 1

Expert Comment

by:bkiahg
ID: 10803949
oops missed the multiple fields try this....

<html>
<head>
<title>What I want to eat</title>

<script language=Javascript>
<!--  Start function //
function hidden(add_value, form_name)  {
      if (form_name.checked)  {
            document.pick_up_request_form.whatIWantToEatSelection.value = document.pick_up_request_form.whatIWantToEatSelection.value + add_value + " ";
      }
      else  {
            my_selec = document.pick_up_request_form.whatIWantToEatSelection.value;
            add_value = add_value + " ";
            testing_array = my_selec.split(add_value);
            document.pick_up_request_form.whatIWantToEatSelection.value = testing_array[0] + testing_array[1];
      }
      // document.pick_up_request_form.whatIWantToEatSelection.value
}
// End -->
</script>
</head>

<body>
<form name="pick_up_request_form">
<table width="600" border="0" cellspacing="0" cellpadding="0">
  <tr>
    <td>Steak
      <input name="whatIWantToEat1" type="checkbox" id="whatIWantToEat" value="checkbox" onClick="JavaScript: hidden('Steak', this);"></td>
  </tr>
  <tr>
    <td>Pizza
      <input name="whatIWantToEat2" type="checkbox" id="whatIWantToEat" value="checkbox" onClick="JavaScript: hidden('Pizza', this);"></td>
  </tr>
  <tr>
    <td>Spaghetti
      <input name="whatIWantToEat3" type="checkbox" id="whatIWantToEat" value="checkbox" onClick="JavaScript: hidden('Spaghetti', this);"></td>
  </tr>
  <tr>
    <td>Dog Food
      <input name="whatIWantToEat4" type="checkbox" id="whatIWantToEat" value="checkbox" onClick="JavaScript: hidden('Dog Food',this);"></td>
  </tr>
  <tr>
    <td>Lobster
      <input name="whatIWantToEat5" type="checkbox" id="whatIWantToEat" value="checkbox" onClick="JavaScript: hidden('Lobster',this);">
<input name="whatIWantToEatSelection" type="text" id="whatIWantToEatSelection"></td>
  </tr>
  <tr>
    <td>&nbsp;</td>
  </tr>
  <tr>
    <td><select name="select" onChange="JavaScript: document.pick_up_request_form.whatIWantToEatSelection2.value=document.pick_up_request_form.select.value">
      <option selected>--Select One--</option>
      <option value="Steak">Steak</option>
      <option value="Pizza">Pizza</option>
      <option value="Spaghetti">Spaghetti</option>
      <option value="Dog Food">Dog Food</option>
      <option value="Lobster">Lobster</option>
    </select> <input name="whatIWantToEatSelection2" type="text" id="whatIWantToEatSelection2"></td>
  </tr>
</table>
</form>
</body>
</html>
0

Featured Post

Optimize your web performance

What's in the eBook?
- Full list of reasons for poor performance
- Ultimate measures to speed things up
- Primary web monitoring types
- KPIs you should be monitoring in order to increase your ROI

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Boost your ability to deliver ambitious and competitive web apps by choosing the right JavaScript framework to best suit your project’s needs.
In this blog, we’ll look at how improvements to Percona XtraDB Cluster improved IST performance.
The viewer will learn the basics of jQuery, including how to invoke it on a web page. Reference your jQuery libraries: (CODE) Include your new external js/jQuery file: (CODE) Write your first lines of code to setup your site for jQuery.: (CODE)
The viewer will learn the basics of jQuery including how to code hide show and toggles. Reference your jQuery libraries: (CODE) Include your new external js/jQuery file: (CODE) Write your first lines of code to setup your site for jQuery…
Suggested Courses

800 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question