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javascript validation not working why?

Posted on 2007-11-20
3
Medium Priority
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339 Views
Last Modified: 2009-07-29
why wont this work?? I want to make sure at least one feild is filled out.

<script>
function validate()
{
      if (document.form1.membno.value == "" || document.form1.lstnam.value == "" document.form1.lstnam.value == "");
                  {
                  alert('You must enter a member number!');
                  return false;
                  }
      else       
                  {
                  form.submit();
                  }
}

</script>
0
Comment
Question by:judsonmusic
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3 Comments
 
LVL 21

Expert Comment

by:nizsmo
ID: 20323390
you missed the second ||, here is the correct code:
<script>
function validate()
{
      if (document.form1.membno.value == "" || document.form1.lstnam.value == "" || document.form1.lstnam.value == "");
                  {
                  alert('You must enter a member number!');
                  return false;
                  }
      else       
                  {
                  form.submit();
                  }
}
 
</script>

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0
 
LVL 3

Author Comment

by:judsonmusic
ID: 20323558
this sortof fixed it but now it is requiring that I fill all 3 feilds with something. I am only looking for one.

Is it the structure??
0
 
LVL 21

Accepted Solution

by:
nizsmo earned 2000 total points
ID: 20323586
ahh i see, this should work then:
<script>
function validate()
{
      if (document.form1.membno.value == "" && document.form1.lstnam.value == "" && document.form1.lstnam.value == "");
                  {
                  alert('You must enter a member number!');
                  return false;
                  }
      else       
                  {
                  form.submit();
                  }
}
 
</script>

Open in new window

0

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