Javascript Validation in search field NOT NULL & 3 Characters Minimum

[yandoo]

Hi,

 

Im currently adding some validation to my search field. So far i have added validation that dislpays a mesage when the user leaves the search field empty.

 

The following code is how i have done this:

<script type="text/javascript">
function validate_required(field,alerttxt)
{
with (field)
{
if (value==null||value=="")
  {alert(alerttxt);return false}
else {return true}
}
}

function validate_form(thisform)
{
with (thisform)
{
if (validate_required(finda,"Email must be filled out!")==false)
  {finda.focus();return false}
}
}
</script>

<form name="search" method="get" action="search_client_details.php"
		onsubmit="return validate_form(this)">
              <input type="text" name="finda"/> 
              <span class="style10">in</span>
              <Select NAME="field">
                <Option VALUE="Client">Client Name</option>
                <Option VALUE="DepartmentCode">Department</option>
              </Select>
              <input type="hidden" name="searching" value="yes" />
              <input type="submit" name="search" value="Search" />
		  </form>

 

I would like to make it so that the user can not only leave the search field empty but also the user MUST use at least 3 characters when searching.  If the user was searching for a name in the database they would need to input the first three letters into the search field.........

 

E.G. If they are searching for a record name called Thomas (they would as a minimum) need to enter the first 3 letters THO. Is this possible please?????

 

If so how do i do it????

 

Any help is greatly appreciated

 

Thanks

 

Tom

 

[taith]

that would be something for the javascript forum... not the php one

 

 

 

 

... grr... drat my perfect timing again! lol...

[per1os]

Post in the correct forum, this is PHP not Javascript.

[taith]

Post in the correct forum, this is PHP not Javascript.

 

uuuh... javascript not php*

[nogray]

Just change this line

 

if (value==null||value=="")

 

to

 

if (value.length < 3)

[per1os]

Post in the correct forum, this is PHP not Javascript.

 

uuuh... javascript not php*

 

Eh what I meant was this is the PHP Forum not the Javascript forum.

 

EDIT: Just noticed it got moved, oh well. I will look like a jackass.

[taith]

Post in the correct forum, this is PHP not Javascript.

 

uuuh... javascript not php*

 

Eh what I meant was this is the PHP Forum not the Javascript forum.

 

EDIT: Just noticed it got moved, oh well. I will look like a jackass.

 

lol... dont worry... i had impecable timing too