Uffa .. fatto ricerca su Google con "javascript save textarea cookie" ...
Prima pagina: http://javascript.internet.com/cooki...m-cookies.html
Codice (da studiare un po' ma va benissimo):
codice:
// -----------------------------------------------------//
// SAVE FORM FIELD SELECTIONS IN COOKIES //
// formcookie_saverestore.js //
// Written by Tony Davis, T. Davis Consulting, Inc. //
// Date written: September 27, 2005 //
// Email: tony@tdavisconsulting.com //
// Web site: http://www.tdavisconsulting.com //
// -----------------------------------------------------//
// instructions:
// ------------
// Change <BODY>
// to <BODY onunload="saveSelections(document.forms[0])"> and
// Change </FORM>
// TO </FORM><SCRIPT language=JavaScript type="">loadSelections(document.forms[0]);</SCRIPT>
// see a working example at: http://www.tdavisconsulting.com/formcookie
//
//
// ------------------------------------------------
// This function will concatentate all the fields in
// in the form into one string, delimited by a PIPE
// symbol, into one cookie. The cookie name is the
// same name as the form name. ALL fields are saved.
// ------------------------------------------------
//
function saveSelections(frm) {
var setvalue;
var fieldType;
var index;
var formname = frm.name;
// Expire cookie in 999 days.
var today = new Date();
var exp = new Date(today.getTime()+999*24*60*60*1000);
var string = "formname=" + formname + "|";
var cookieName = formname;
//alert(exp);
//alert(formname);
var n = frm.length;
for (i = 0; i < n; i++)
{
e = frm[i].name;
fieldValue = frm[i].value;
fieldType = frm[i].type;
//alert(e);
//alert(fieldType);
//alert(fieldValue);
//
// RADIO BUTTON
//
if (fieldType == "radio") {
//alert(frm.elements[e].length);
for (x=0; x < frm.elements[e].length; x++) {
if (frm.elements[e][x].checked)
{
index = x
}
}
string = string + index + "\|";
}
//
// TEXT, TEXTAREA, and DROPDOWN
//
if ((fieldType == "text") ||
(fieldType == "textarea") ||
(fieldType == "select-one"))
{
string = string + frm.elements[e].value + "\|";
//alert("text");
}
//
// CHECKBOX
//
if (fieldType == "checkbox")
{
if (frm.elements[e].checked==true) {
var setvalue = "1";
}
if (frm.elements[e].checked==false) {
var setvalue = "0";
}
string = string + setvalue + "\|";
//alert("checkbox");
}
//
// HIDDEN field
//
if (fieldType == "hidden")
{
string = string + frm.elements[e].value + "\|";
//alert("text");
}
}
//alert(string);
setCookie(cookieName, string, exp); }
//
// LOAD FORM FIELD SELECTIONS FROM SAVED COOKIES
//
function loadSelections(frm) {
var e;
var z;
var x;
var cookieName;
var fieldArray;
var fieldValues;
var fieldValue;
var formname = frm.id;
// Retrieve form elements from cookie and split into array.
cookieName = formname;
fieldValues = getCookie(cookieName);
fieldArray = fieldValues.split("\|");
//alert(fieldArray);
//alert(fieldArray[0]);
//alert(fieldArray[1]);
//alert(fieldArray[2]);
//alert(fieldArray[3]);
var n = frm.length;
for (i = 0; i < n; i++) {
e = frm[i].name;
z = i;
z++;
var fieldType = frm[i].type;
var fieldValue = fieldArray[z];
//
// TEXT, TEXTAREA, and DROPDOWN
//
if ((fieldType == "text") ||
(fieldType == "textarea") ||
(fieldType == "select-one"))
{
frm.elements[e].value = fieldValue;
//alert(e);
//alert(fieldValue);
}
// CHECKBOX
//
if (fieldType == "checkbox")
{
fld_checkbox = fieldValue;
if (fld_checkbox == "1") {
frm.elements[e].checked = true;
}
}
// RADIO BUTTON
//
if (fieldType == "radio") {
x = fieldValue;
//alert(x);
frm.elements[e][x].checked = true;
}
//
// HIDDEN field
//
if (fieldType == "hidden")
{
frm.elements[e].value = fieldValue;
}
}
}
/// COOKIE FUNCTIONS
function setCookie(name, value, expires, path, domain, secure) {
document.cookie= name + "=" + escape(value) +
((expires) ? "; expires=" + expires.toGMTString() : "") +
((path) ? "; path=" + path : "") +
((domain) ? "; domain=" + domain : "") +
((secure) ? "; secure" : "");
}
function getCookie(name) {
var dc = document.cookie;
var prefix = name + "=";
var begin = dc.indexOf("; " + prefix);
if (begin == -1) {
begin = dc.indexOf(prefix);
if (begin != 0) return null;
} else {
begin += 2;
}
var end = document.cookie.indexOf(";", begin);
if (end == -1) {
end = dc.length;
}
return unescape(dc.substring(begin + prefix.length, end));
}
HTH
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