<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title>Form Session</title>
</head>
<body>
<script type="text/javascript">
<!--
/**
* Сохраняем форму. Функция принимает ссылку на форму. Форма должна иметь
* уникальный аттрибут ID.
*/
function saveFormSession(form) {
if(!form||!form.id||!/^[^;=]+$/.test(form.id)) return;
var data="", tok, el, safe_name;
for(var i=0; i<form.elements.length; i++) {
if((el=form.elements[i]).name==""||el.getAttribute("skip_form_save")!=null) continue;
safe_name=el.name.replace(/([)\\])/g, "\\$1");
switch(el.type) {
case "text":
case "textarea": tok="v("+safe_name+"):"+el.value.replace(/([|\\])/g, "\\$1")+"||"; break;
case "radio":
case "checkbox": tok="s("+safe_name+"):"+(el.checked? "1": "0")+"||"; break;
case "select-one": tok="i("+safe_name+"):"+(el.selectedIndex)+"||"; break;
default: tok="";
}
data+=tok;
}
if(data>=4000) return alert("Can't save form into cookie, to much data...");
document.cookie="ses"+form.id+"="+escape(data);
return true;
}
/**
* Восстановить значение формы. Форма должна иметь уникальный атттрибут ID.
*/
function restoreFormSession(form) {
if(!form||!form.id||!/^[^;=]+$/.test(form.id)) return false;
var strt, end, data, nm, dat;
if((strt=document.cookie.indexOf("ses"+form.id))<0) return false;
if((end=document.cookie.indexOf(";", strt + form.id.length + 3))<0) end=document.cookie.length;
data=unescape(document.cookie.substring(strt + form.id.length + 4, end)).split("||");
for(var i=0; i<data.length-1; i++) {
nm=/^[vsi]\(((?:[^)\\]|(?:\\\))|(?:\\\\))+)\)\:/.exec(data[i]);
nm[1]=nm[1].replace(/\\([)\\])/g, "$1");
dat=data[i].substr(nm[0].length).replace(/\\([|\\])/g, "$1");
switch(data[i].charAt(0)) {
case "v": form.elements[nm[1]].value=dat; break;
case "s": form.elements[nm[1]].checked=(dat=="1"? true: false); break;
case "i": form.elements[nm[1]].selectedIndex=dat; break;
}
}
return true;
}
//-->
</script>
<!-- Пример использования -->
<form id="test1">
<input name="text[0]" type="text" /><br />
<input name="skiped" type="text" skip_form_save="true" /><br />
<input name="pass" type="password" /><br />
<input name="radio" type="radio" /><br />
<input name="check" type="checkbox" /><br />
<textarea name="txt"></textarea><br />
<select name="sel">
<option selected="selected">Test1</option>
<option>Test2</option>
<option>Test3</option>
</select><br />
<input type="submit" onclick="saveFormSession(this.form)" value="Save form" />
<input type="button" onclick="restoreFormSession(this.form)" value="Restore form" />
</form>
</body>
</html>
