Missing variable in my javascript???

[Nina2001]

Hi. Can someone take a look at this? I'm trying to validate this form field during the html form submission. I want it to make sure the field contains alpha numeric characters with a length of 9. Right now it is only letting a user submit 9 numbers. Any help is greatly appreciated.

if (theForm.ID.value.length != 9)
{
alert("Please enter only 9 characters, with no dashes or spaces, in the \"ID\" field."
theForm.ID.focus();
return (false);
}
var checkOK = "0123456789";
var checkStr = theForm.ID.value;
var allValid = true;
var decPoints = 0;
var allNum = "";
for (i = 0; i < checkStr.length; i++)
{
ch = checkStr.charAt(i);
for (j = 0; j < checkOK.length; j++)
if (ch == checkOK.charAt(j))
break;
if (j == checkOK.length)
{
allValid = false;
break;
}
allNum += ch;
}
if (!allValid)
{
alert(&quot;Please enter only 9 characters, with no dashes or spaces, in the \&quot;ID\&quot; field.&quot;
theForm.ID.focus();
return (false);
}
return (true);
}

 

[webmigit]

With as many questions as I ask here, I probably shouldn't try to answer one but wouldn't it be easier to say

if (len(string) > 9) {
...action...
}

ALFII.com

http://www.alfii.com

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[mwolf00]

if (theForm.ID.value.length != 9)
{
alert(&quot;Please enter only 9 characters, with no dashes or spaces, in the \&quot;ID\&quot; field.&quot;
theForm.ID.focus();
return (false);
}
var ptrn = /^\w{9}$/
var checkStr = theForm.ID.value;

if (!ptrn.test(checkStr))
{
alert(&quot;Please enter only 9 characters, with no dashes or spaces, in the \&quot;ID\&quot; field.&quot;
theForm.ID.focus();
return (false);
}
return (true);
}




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