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03.27.2008 at 07:09PM PDT, ID: 23276268
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9.1

Execute "Submit" on Change of Form Variables

Zones: JScript, Hypertext Markup Language (HTML), PHP Scripting Language
Hello Experts,

Attached is an script extract from my PHP page.

Basically, I would like the submit button to "execute" whenever a one of the 3 variables change (i.e. city, temp_set and rating).

Look forward to hearing soon. Cheers, Arthur
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<table border="0px" cellpadding="3px" cellspacing="3px" width="400px">
  <tr>
    <td>Select a<br />City</td>
    <td>Your Prefered<br />Swimming Temp</td>
    <td>Select a <br />Heater Model</td>
  </tr>
  <tr>
    <td>
  <select name="city" id="city">
    <option value="mel" <?=$cities[0]?> >Melbourne</option>
    <option value="syd" <?=$cities[1]?> >Sydney</option>
    <option value="bri" <?=$cities[2]?> >Brisbane</option>
    <option value="per" <?=$cities[3]?> >Perth</option>
  </select>
  </td>
    <td>
  <select name="temp_set" id="temp_set">
    <option value="24" <?=$temp_sets[0]?> >24 Degrees C</option>
    <option value="26" <?=$temp_sets[1]?> >26 Degrees C</option>
    <option value="28" <?=$temp_sets[2]?> >28 Degrees C</option>
  </select>
  </td>
    <td>
  <select name="rating" id="rating">
    <option value="7.8" <?=$ratings[0]?> >OnePac 2 - 7.8kW</option>
    <option value="11" <?=$ratings[1]?> >OnePac 3 - 11kW</option>
    <option value="15" <?=$ratings[2]?> >EdenPac 4 - 15kW</option>
    <option value="24" <?=$ratings[3]?> >EdenPac 7 - 24kW</option>
  </select>
  </td>
 </tr>
</table>
<br />
 
<input type="submit" name="button" id="button" value="submit" />
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Question Stats
Zone: Programming
Question Asked By: arthur_raft2
Solution Provided By: TheAnarchist
Participating Experts: 2
Solution Grade: A
Views: 4
Translate:
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03.27.2008 at 07:23PM PDT, ID: 21227572
TheAnarchist:

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03.27.2008 at 07:28PM PDT, ID: 21227588
karaula:

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03.27.2008 at 07:31PM PDT, ID: 21227598
karaula:

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03.27.2008 at 07:23PM PDT, ID: 21227572
TheAnarchist:
In order for the data to be submitted to your PHP script, you will need to enclose those options and submit button within a form (excuse the lack of indentation where I've inserted the form).

To have the form submit automatically whenever one of those options is changed, some simple Javascript is needed.

The downside of this, of course, is that if a user does not have Javascript enabled, then the automatic submission will not work. Those users will still be able to manually click on the submit button.
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<form method="post" action="yourPHPscript.php" name="myForm">
<table border="0px" cellpadding="3px" cellspacing="3px" width="400px">
  <tr>
    <td>Select a<br />City</td>
    <td>Your Prefered<br />Swimming Temp</td>
    <td>Select a <br />Heater Model</td>
  </tr>
  <tr>
    <td>
  <select name="city" id="city" onchange="document.myForm.submit();">
    <option value="mel" <?=$cities[0]?> >Melbourne</option>
    <option value="syd" <?=$cities[1]?> >Sydney</option>
    <option value="bri" <?=$cities[2]?> >Brisbane</option>
    <option value="per" <?=$cities[3]?> >Perth</option>
  </select>
  </td>
    <td>
  <select name="temp_set" id="temp_set" onchange="document.myForm.submit();">
    <option value="24" <?=$temp_sets[0]?> >24 Degrees C</option>
    <option value="26" <?=$temp_sets[1]?> >26 Degrees C</option>
    <option value="28" <?=$temp_sets[2]?> >28 Degrees C</option>
  </select>
  </td>
    <td>
  <select name="rating" id="rating" onchange="document.myForm.submit();">
    <option value="7.8" <?=$ratings[0]?> >OnePac 2 - 7.8kW</option>
    <option value="11" <?=$ratings[1]?> >OnePac 3 - 11kW</option>
    <option value="15" <?=$ratings[2]?> >EdenPac 4 - 15kW</option>
    <option value="24" <?=$ratings[3]?> >EdenPac 7 - 24kW</option>
  </select>
  </td>
 </tr>
</table>
<br />
 
<input type="submit" name="button" id="button" value="submit" />
</form>
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Accepted Solution
 
03.27.2008 at 07:28PM PDT, ID: 21227588
karaula:
Hello,

first add following code between <head> and </head> tags

<script type="text/javascript" >
function doAction(){
document.form.action.value = 'action.php';  // change form to your form's name, e.g., document.myformname
}
</script>


in all fields which you want to do an action on change replace with following:

  <select name="city" id="city" onChange="doAction()">
    <option value="mel" <?=$cities[0]?> >Melbourne</option>
    <option value="syd" <?=$cities[1]?> >Sydney</option>
    <option value="bri" <?=$cities[2]?> >Brisbane</option>
    <option value="per" <?=$cities[3]?> >Perth</option>
  </select>
 
03.27.2008 at 07:31PM PDT, ID: 21227598
karaula:
another way you can try is to put:


onChange="location.href='action.php?poststring=' + document.getElementById('city').value"
Assisted Solution
 
 
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