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Validating using RegExp on Form


sharon5467
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HiI am trying to create the below form without much success. Please can anyone provide any tips or pointers of what I am doing wrong?<html><head><title>Untitled Document</title><meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"><script LANGUAGE="JavaScript" type="text/javascript"><!-- hide javascript codevar justValidating = truefunction validateForm(form) //validate assessment data { if (!validateStudentNumber(form.studentNum.value)) // student number valid? { form.studentNum.focus() return false }if (justValidating) // only show alert box if validating, and not submitting alert("Well Done: Your data is valid!") // all data validated return true }function validateStudentNumber(studentNum) { var myRegexp = /^[A-Z]{2}\d{7}/ if(myRegexp.test(/^[A-Z]{2}\d{7}/)) } alert("Please enter two letters before seven digits!") return false } return true }// end javascript hide --></SCRIPT></head><BODY BGCOLOR="white" TEXT="blue" onLoad="window.defaultStatus='JavaScript Assessment Frame'"><CENTER><H2>JavaScript Assessment</H2> <FORM NAME="assessForm" METHOD="post" ACTION="mailto:skinton11@yahoo.co.uk" onSubmit="justValidating=false; return validateForm(assessForm)"> Student Number: <INPUT NAME="studentNum" TYPE="text" SIZE="12" maxlength="9"> <INPUT TYPE="submit" VALUE="Submit"> <INPUT TYPE="button" VALUE="Validate" onClick="justValidating=true; validateForm(this.form)"> <INPUT TYPE="reset" VALUE="Reset"></FORM></body></html>Anyone have any suggestions??Many ThanksSharon :)

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Don't forget the '$' at the end of the regular expression, it's very important.Without it the string could 'end' with anything.You'll need to inspect the way you are calling the 'test' also, here's your fixes:

<script type="text/javascript"><!-- hide javascript codevar justValidating = truefunction validateForm(form) //validate assessment data{  if (!validateStudentNumber(form.studentNum.value)) // student number valid?  {  form.studentNum.focus()  return false  }  if (justValidating) // only show alert box if validating, and not submitting  alert("Well Done: Your data is valid!") // all data validatedreturn true}function validateStudentNumber(studentNum){  var myRegexp = /^[A-Z]{2}\d{7}$/   if(!myRegexp.test(studentNum))   {    alert("Please enter two letters(Caps Please) before seven digits!")    return false   }return true}// end javascript hide --></script>

Thanks,

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