Form validation? 1212 Responses

Last post: 2 years ago | Thread started: Feb 8, 10, 1:15 p.m.

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• boobs

  I am having such a hard time getting my head around this. I've looked around on the internets, and I just can't seem to understand how to do this. How do I set it up so that if a checkbox on a form is not checked, the form can't be submitted?

  Feb 8, 10, 1:15 p.m. – Permalink

• boobs

  They have to check the checkbox for the form to be submitted.

  

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  Dog-earFeb 8, 10, 1:18 p.m. – Permalink

• fugged

  http://gist.github.com/298594

  

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  Dog-earFeb 8, 10, 1:22 p.m. – Permalink

• boobs

  That doesn't help at all!

  No squeeze for you!

  

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  Dog-earFeb 8, 10, 1:24 p.m. – Permalink

• fugged

  not sure whatcha need then?

  • Well, don't have the crucial part "psuedo code."– boobs

  

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  Dog-earFeb 8, 10, 1:26 p.m. – Permalink

• fugged

  submit handler function should return false to prevent the form from submitting.

  so in your handler function you need to test and see if the checkbox is checked. if so, return true - (and the for will submit) otherwise return false (and the form will be prevented from submitting)

  

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  Dog-earFeb 8, 10, 1:27 p.m. – Permalink

• ETM

  So I'll assume you mean in javascript since you didn;t say.

  if (frm.insertboxname.checked == false) {
  alert ('** Error message **');
  return false;
  }

  

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  Dog-earFeb 8, 10, 1:28 p.m. – Permalink

• bzsaw

  http://www.willmaster.com/librar…

  

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  Dog-earFeb 8, 10, 1:28 p.m. – Permalink

• fugged

  I gotcha boobs. check it again.:
  http://gist.github.com/298594

  

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  Dog-earFeb 8, 10, 1:42 p.m. – Permalink

• boobs

  Well, fugged, I put that into my page, and it doesn't seem to work. Even if the box is not checked, the form still submits, and the information goes into the database.

  • I'm guessing you neglected the part where the js is explicitly referencing the checkbox by id– acescence1/2

    No, I put the ID into the js. Where it says "foo." Right?– boobs2/2

  

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  Dog-earFeb 8, 10, 2:04 p.m. – Permalink

• fugged

  make sure you don't have any other javascript errors going on. if you have a url, I can help you debug what's going on.

  

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  Dog-earFeb 8, 10, 2:08 p.m. – Permalink

• ayport

  Can always do it server side:

  HTML:
  <form action="formProcessor.php" method="post">
  <input type="checkbox" value="yes" name="checkbox">
  <input type="submit">
  </form>

  PHP (asp or asp.net works the same):
  <?
  if ($_POST['checkbox'] == "yes")
  {
  // process rest of form
  }
  else
  {
  echo "please check the box";
  }
  ?>

  

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  Dog-earFeb 8, 10, 2:15 p.m. – Permalink

• boobs

  fugged got me through it! Big squeeze for fugged!

  

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  Dog-earFeb 8, 10, 2:42 p.m. – Permalink