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[Javascript] Regular Expression example

  • From: Travis.Falls at thehartford.com (Falls, Travis D (HTSC, CASD))
  • Subject: [Javascript] Regular Expression example
  • Date: Wed Jun 29 13:42:45 2005
I have a regular expression example I am trying to get to work.  I know the
expressions works because I have tested it in the Regular Expression Buddy
application however it does not validate in my JavaScript as true. Does
anyone see what I have done incorrect here?
 
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
 <head>
  <title>Regular Expression Test</title>
  <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
  <script language="JavaScript">
  String.prototype.trim=function(){
   return this.replace(/^\s*|\s*$/g,'');
  }
 
  String.prototype.ltrim=function(){
   return this.replace(/^\s*/g,'');
  }
 
  String.prototype.rtrim=function(){
      return this.replace(/\s*$/g,'');
  }
 
 
 
  function isValidTime(value) {
   var returnValue = true;
      var hasMeridian = false;
      var re = /^\d{1,2}[:]\d{2}([:]\d{2})?( [aApP][mM]?)?$/;
      if (!re.test(value)) {
        returnValue = true;
        return returnValue; 
   }
      if (value.toLowerCase().indexOf("p") != -1) { 
    hasMeridian = true; 
   }
      if (value.toLowerCase().indexOf("a") != -1) {
    hasMeridian = true; 
   }
      var values = value.split(":");
      if ((parseFloat(values[0]) < 0) || (parseFloat(values[0]) > 23) ) {
    returnValue = false;
   }
      if (hasMeridian) {
          if ( (parseFloat(values[0]) < 1) || (parseFloat(values[0]) > 12) )
{
     returnValue = false; 
    }
      }
      if ((parseFloat(values[1]) < 0) || (parseFloat(values[1]) > 59) ) {
    returnValue = false;
   }
      if (values.length > 2) {
          if ((parseFloat(values[2]) < 0) || (parseFloat(values[2]) > 59) )
{
     returnValue = false; 
    }
      }
      return returnValue;
  }
  
 
 
 
  function checkPassword (strng) {
   var isvt = new isValidTime();
   var error = "";
   var validTime = new RegExp(/\A([0-1]?[0-9]:[0-5][0-9]([:][0-5][0-9])?([
]?[a,A,p,P][.]?[m,M][.]?)?)\z/);    
   strng = form.time.value.trim();
   if (strng == "") {
     error = "String not filled in";
   }
   else if (validTime.test(strng)) {
          error = "String is formatted correctly.\n" + strng + "\n" +
validTime;
   }
   else if (!validTime.test(strng)) {
    error = "String NOT formatted correctly.\n" + strng + "\n" + validTime;
   }
   alert(error);
   var ivt = new isValidTime(strng);
   if(ivt.returnValue){
    alert("valid");
   }
  }
  
  
 
  </script>
 </head>
<body>
 <form name="form" id="form" onsubmit="return checkPassword();">
  <input id="time" name="time" maxlength="50" type="text" />
  <input type="submit" id="submit" name="submit" />
 </form>
</body>
</html>

Travis D. Falls | Consultant   RAFT.Net   IT | 860.547.4070 |
travis.falls@xxxxxxxxxxxxxxx 





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