JavaScript Forum

<script>
//Function to check the format of the email address
 function echeck(str) {
  var at=”@”
  var dot=”.”
  var em = “”
  var lat=str.indexOf(at)
  var lstr=str.length
  var ldot=str.indexOf(dot)
   if (str.indexOf(at)==-1){ return false;}
   if (str.indexOf(at)==-1 || str.indexOf(at)==0 ||  str.indexOf(at)==lstr){return false;}
   if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 ||  str.indexOf(dot)==lstr){return false;}
   if (str.indexOf(at,(lat+1))!=-1){return false;
   if (str.substring(lat-1,lat)==dot ||  str.substring(lat+1,lat+2)==dot){return false;}
   if (str.indexOf(dot,(lat+2))==-1){return false;}
 
  if (str.indexOf(” “)!=-1){return false;}
   return true;    
}
function validateForm(form) {
 //MSG is the basis to put all alerts in if a field is missing
 
 var msg = “”;
 //Validate the standard form fields
  if (form.fname.value == “”) {  msg += “\n ” +”Please enter your  first name.”;
      form.fname.focus( );
      }
  if (form.lname.value == “”) {  msg += “\n ” +”Please enter your last  name.”;
      form.lname.focus( );
      }
 
 if (echeck(form.email.value)==false){msg += “\n ” + “Email format not  correct!”;}
 
 if (form.phone.value == “”) {  msg += “\n ” +”Please enter your phone  number.”;
 form.phone.focus( );
 }
  if (form.address.value == “”) {  msg += “\n ” +”Please enter your  address.”;
      form.address.focus( );
      }
  if (form.city.value == “”) {  msg += “\n ” +”Please enter your  city.”;
      form.city.focus( );
      } 
 
 if (form.state.value == “”) { msg += “\n ” + “Please enter your  state.”;
      form.state.focus( );
      }
  if (form.zip.value == “”) {  msg += “\n ” +”Please enter your zip  code.”;
      form.zip.focus( );
       }
   
//Validate Extra Questions – Radio & Checkbox & Text
  function trim(s) {if (s) {return s.replace(/^\s*|\s*$/g,”");} return  null;}
   
  var inputs = form.getElementsByTagName(“input”);
  var e;
  for( var i = 0, e; e = inputs[i]; i++ ){
  var value = e.value ? trim(e.value) : null;
 
    if (e.type == “text” && e.title && !value &&  e.className == “r”)
    {msg += “\n ” + e.title;}
 
 
   if ((e.type == “radio” || e.type == “checkbox”) &&  e.className == “r”) {
       var rd =”"
       var controls = form.elements;
     
   function getSelectedControl(group)
         {
         for (var i = 0, n = group.length; i < n; ++i)
          if (group[i].checked) return group[i];
          return null;
        }
     
  if (!getSelectedControl(controls[e.name]))
        {msg += “\n ” + e.title;}
     }
 }
 //Validate Extra Questions – Textarea
   var inputs = form.getElementsByTagName(“textarea”);
  var e;
 
  for( var i = 0, e; e = inputs[i]; i++ ){
    var value = e.value ? trim(e.value) : null;
    if (!value && e.className == “r”)
    {msg += “\n ” + e.title;}
  }
 //Validate Extra Questions – DropDown
  var inputs = form.getElementsByTagName(“select”);
  var e;
 
 for( var i = 0, e; e = inputs[i]; i++ ){
    var value = e.value ? trim(e.value) : null;
    if ((!value || value ==”) && e.className == “r”)
    {msg += “\n ” + e.title;}
  }
 //Return the Alert Message – if exists
  if (msg.length > 0) {
    msg = “The following fields need to be completed before you can  submit.\n\n” + msg;
    alert(msg);
    return false;
   }
 
//If no Alert message release form for posting
 return true; 
 }
</script>