How to make allowed values are 1 to 7, n and blank only?

**dudskie37** · 02-09-2013, 06:47 PM

I am just new with javascript and I only need to allow values when submitted. Allowed values are 1 to 7, n and blank only... How to restrict others? I just started below to allow 1 to 7 but for n and blank, I don't know yet.

JAVASCRIPT:

Code:

function verify(frm) {
	if (frm.sc_scores.value > 7 || frm.sc_scores.value <= 0) {
		self.alert(frm.sc_scores.value + " is an invalid value! Allowed values are 1 to 7, n and blank");
		frm.sc_scores.focus();
	}
}

HTML:

Code:

<input type="text" name="sc_scores" id="sc_scores" maxlength="1" size="2" value="<%= number %>" />

Code:

<input type="button" onClick="verify(this.form)" value="Edit" />

Please help... Thanks....

**JMRKER** · 02-09-2013, 08:05 PM

Something like this? ...

Code:

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<title> Untitled </title>
</head>
<body>
<form action="" method="post" onsubmit="return false">
<input type="text" name="sc_scores" id="sc_scores" maxlength="1" size="2" value="" /> <!-- value="<%= number %>" / add back later -->
<input type="button" onClick="verify(this.form)" value="Edit" />
</form>

<script type="text/javascript">
function verify(frm) {
  var info = frm.sc_scores.value;
  var patt = /[1-7]|n|\s/g;
  var result=patt.test(info);

  if (!result) {
    alert(frm.sc_scores.value + " is an invalid value! Allowed values are 1 to 7, n and blank");
    frm.sc_scores.focus();
  } else { alert('Valid input'); }
  return result;
}
</script>

</body>
</html>

**dudskie37** · 02-09-2013, 09:20 PM

Thanks JMRKER!!!

I tried it and it works, but have to allow also the "blank" or "empty". What change to the pattern to allow empty or blank in the score field?

And also, I am just new with the pattern.. How do we allow also -3 to 3 only?

I tried this... var negativePatt = /[-3-3]|n|\s/g; BUT it does not work... This is separate pattern...

**JMRKER** · 02-10-2013, 10:04 AM

Originally Posted by dudskie37

Thanks JMRKER!!!

I tried it and it works, but have to allow also the "blank" or "empty". What change to the pattern to allow empty or blank in the score field?

And also, I am just new with the pattern.. How do we allow also -3 to 3 only?

I tried this... var negativePatt = /[-3-3]|n|\s/g; BUT it does not work... This is separate pattern...

try:

Code:

  var patt = /[1-7]|n|-1|-2|-3|-4|-5|-6|-7/g;

for the 'blank' part try:

Code:

function verify(frm) {
  var info = frm.sc_scores.value;
  if (info == '') { return; }

You can find a bunch about 'regular expressions' or 'regex' with a google search
or search this forum for more examples.

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