Validate a time value input with string.indexOf method : String « Data Type « JavaScript DHTML






  1. JavaScript DHTML
  2. Data Type
  3. String

Validate a time value input with string.indexOf method

  

<HTML>
<HEAD>
<SCRIPT language="JavaScript">
function check_it()
{
     var thetext=document.myForm.the_time.value;
     if (thetext.indexOf(":") == -1)
     {
          window.alert("No colon(:)");
          return false;
     }
     else
     {
         return true;
     }
}
</SCRIPT>
</HEAD>
<BODY>
<FORM name="myForm" action="#" onSubmit="return check_it();">
Time:<INPUT type="text" name="the_time">
<INPUT type="submit" value="Submit">
</BODY>
</HTML>








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