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Limit Textbox Entry

Posted on 2003-11-04
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Last Modified: 2012-05-05
I want to limit the text entered into my textbox in the following ways:

If name="Jed" Then
  maxLength="6"
ElseIf name="Ted" Then
  maxLength="5"
Else maxLeength="4"

Also, you can only enter the following characters:
FLAfla1234567890

Also, you can only enter the following combo of letters:
either    FL
or    A

You may only enter one A or you may enter FL or you can enter no letters but numbers only!
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Question by:yourbudweiser
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2 Comments
 
LVL 3

Expert Comment

by:superslamwich
ID: 9683206
Heres for the entry, I'll get a maxlength script for you in a sec:

<script type='text/javascript'>
<!--

function validate(obj)  {
  val=obj.value
  re1=/(F)/i
  re2=/(L)/i
  re3=/(A)/i
  re4=/(\d+)/
  re5=/[^FLA0-9]/i
  q=0
  if(re1.test(val))  q=q+.5
  if(re2.test(val))  q=q+.5
  if(re3.test(val))  q++
  if(re4.test(val))  q++
  if(re5.test(val))  q=q+2
  if(q==1)  {
    alert("OK")
    return true;
  } else {
    alert("NOT OK")
    return false;
  }
}
//-->
</script>

<form onSubmit='validate(this.form.elements["joe"])'>
<input type='text' name='joe'><br />
<input type='submit value='CLICK'>
</form>
0
 
LVL 3

Accepted Solution

by:
superslamwich earned 300 total points
ID: 9683212
Whoops, make that this:

<script type='text/javascript'>
<!--

function validate(obj)  {
 val=obj.value
 re1=/(F)/i
 re2=/(L)/i
 re3=/(A)/i
 re4=/(\d+)/
 re5=/[^FLA0-9]/i
 q=0
 if(re1.test(val))  q=q+.5
 if(re2.test(val))  q=q+.5
 if(re3.test(val))  q++
 if(re4.test(val))  q++
 if(re5.test(val))  q=q+2
 if(q==1)  {
   alert("OK")
   return true;
 } else {
   alert("NOT OK")
   return false;
 }
}
//-->
</script>

<form onSubmit='return validate(this.elements["joe"])'>
<input type='text' name='joe'><br />
<input type='submit' value='CLICK'>
</form>

{Slam}
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