Saving user preferences in a cookie

**Carmel819** · 09-19-2010 12:38 PM

Hey all! I'm having a few problems with this script:

- the third text input in the form is requesting for the user's favorite color. I need it to validate the data to either be a defined color or a hexadecimal value and then turn the background into that color upon submission. However, it's not validating correctly... When a correct value is entered it works fine, it's the error message for an invalid entry that's not appearing.

- I need to save all of the user's input into a cookie which will automatically load their preferences the next time they visit the site(time of day message, first & last name and bg color).

Ideas?

Here's what I have so far:

Code:

<html>
<head>
<script language="javascript">

<!-- Début

//Valider formulaire
function valider(){

if (document.testform.Prenom.value=="") {
alert("S.V.P. indiquez votre prénom!")
return false;
}
if (document.testform.Nom.value=="") {
alert("S.V.P. indiquez votre nom de famille!")
return false;
}
if (document.testform.Couleur.value=="") {
alert("S.V.P. indiquez votre couleur préféré!")
return false;
}

var inputField = document.getElementById("Couleur").value.substr(1);
if (!/^[a-f0-9]{3}$|^[a-f0-9]{6}$/i.test(inputField))
{
	alert("Vous devez indiquez une valeur hexidécimale ou une couleur définie!");
return false;
}
return true;
}

//Change la couleur d'arrière plan
function changeBg(){
  var PrNom = document.forms[0].Prenom.value;
  var NomF = document.forms[0].Nom.value;
  var bgColor = document.testform.Couleur.value;
  
  //Message de bienvenue en fonction de l'heure
  var heure=new Date().getHours()
  var msg=""
  if (heure<=6) {msg="Bonne nuit"}
  if (heure>6 && heure<=12) {msg="Bon matin"}
  if (heure>12 && heure<=18) {msg="Bonne après-midi"}
  if (heure>18 && heure<=24) {msg="Bonne soirée"}

  document.write(msg +" " +PrNom +" " +NomF +"!");
  document.bgColor = bgColor;
 }

// Fin -->
</SCRIPT>
</head>
<body>

<form name="testform" onSubmit="changeBg()" />
<br />
Pr&eacute;nom?&nbsp;<input type="text" size=30 name="Prenom"  value="Visiteur" onBlur="valider()"<br />
Nom?&nbsp;<input type="text" size=30 name="Nom" value="Inconnu" onBlur="valider()" /><br />
Couleur pr&eacute;f&eacute;r&eacute;?&nbsp;<input type="text" size=30 name="Couleur" value="#FFFFFF" onBlur="valider()" maxlength="7" /></br />
<input type="submit" value="Valider">
</form>
</body>
</html>

**Sterling Isfine** · 09-19-2010 01:24 PM

You're calling document.getElementById for an element with no ID.

Use the error console.

**Carmel819** · 09-20-2010 07:32 PM

Ok, so I fixed the missing ID and seem to have a portion of my cookies working (in Explorer but not Mozilla?). How do I save the background color entered in the 3rd text field as a cookie as well?

Code:

<html>
<head>

<script language="javascript">

<!-- Début

//Valider formulaire
function valider(){

var bgColor = document.testform.Couleur.value;
document.bgColor = bgColor;

if (document.testform.Prenom.value=="") {
alert("S.V.P. indiquez votre prénom!")
return false;
}
if (document.testform.Nom.value=="") {
alert("S.V.P. indiquez votre nom de famille!")
return false;
}
if (document.testform.Couleur.value=="") {
alert("S.V.P. indiquez votre couleur préféré!")
return false;
}

var inputField = document.getElementById("Couleur").value.substr(1);
if (!/^[a-f0-9]{3}$|^[a-f0-9]{6}$/i.test(inputField))
{
	alert("Vous devez indiquez une valeur hexidécimale!");
return false;
}
return true;
}

function set_it() {

  var inputFieldP = document.getElementById("Prenom").value
  var inputFieldN = document.getElementById("Nom").value
  var thetext="greeting=Bonjour "+inputFieldP +" " +inputFieldN +",";
  var expdate=";expires=Mon, 30 Mar 2020 13:00:00 UTC";
  var newtext=escape(thetext);
  newtext+=expdate;
  document.cookie=newtext
  
}

function read_it() {

 var mycookie =document.cookie;
 var fixed_cookie = unescape(mycookie);
 var thepairs = fixed_cookie.split(";");
 var namepairs= thepairs[0].split("=");
 var greet= namepairs[1];
 document.write(greet);
 }

if (document.cookie) {
  read_it();
}
else {
  set_it();
}

// Fin -->
</script>
</head>

<body>
<script language="javascript">

//Message de bienvenue en fonction de l'heure
var heure=new Date().getHours()
var msg=""
if (heure<=6) {msg="bonne nuit"}
if (heure>6 && heure<=12) {msg="bon matin"}
if (heure>12 && heure<=18) {msg="bonne après-midi"}
if (heure>18 && heure<=24) {msg="bonne soirée"}
  
document.write(msg +"!");  
  
</script>

<form name="testform" >
Prénom:&nbsp;<input size="30" name="Prenom" value="Visiteur" onblur="set_it" type="text"><br>
Nom:&nbsp;<input size="30" name="Nom" value="Inconnu" onblur="set_it" type="text"><br>
Couleur préféré:&nbsp;<input size="30" name="Couleur" value="#FFFFFF" onblur="set_it()" maxlength="7" type="text"><br>
<input value="Valider" type="button" onClick="valider()">
<input value="Soumettre" type="button" onClick="read_it">
</form>
</body>
</html>

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