www.webdeveloper.com
Results 1 to 4 of 4

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

  1. #1
    Join Date
    Jan 2013
    Posts
    10

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

    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....

  2. #2
    Join Date
    Dec 2005
    Location
    FL
    Posts
    7,353

    Lightbulb

    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>

  3. #3
    Join Date
    Jan 2013
    Posts
    10
    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...

  4. #4
    Join Date
    Dec 2005
    Location
    FL
    Posts
    7,353
    Quote Originally Posted by dudskie37 View Post
    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.
    Last edited by JMRKER; 02-10-2013 at 10:14 AM.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
HTML5 Development Center



Recent Articles