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// basic cookie handling
//////////////////////////////////////////////////////////////////////////////
/** create cookie
*
* @param {string} name : cookie name
* @param {*} value : cookie value
* @param {int} expire : expiration time (in seconds)
*/
function createCookie(name, value, expire) {
var expires;
if (expire) {
var date = new Date();
date.setTime(date.getTime()+(expire * 1000));
expires = "; expires=" + date.toGMTString();
} else {
expires = "";
}
document.cookie = name+"="+value+expires+"; path=/";
}
/** read cookie
*
* @param {string} name : cookie name
* @returns cookie value
*/
function readCookie(name) {
var nameEQ = name + "=";
var ca = document.cookie.split(';');
for(var i=0 ; i < ca.length ; i++ ) {
var c = ca[i];
while (c.charAt(0) == ' ') {
c = c.substring(1,c.length);
}
if (c.indexOf(nameEQ) == 0) {
return c.substring(nameEQ.length,c.length);
}
}
return null;
}
/** remove cookie
* == create cookie with empty string, already expired
*/
function removeCookie(name) {
createCookie(name, "", -1);
}
/** cookie exists
*
* @param {string} name
* @returns {boolean} true|false
*/
function cookieExists(name) {
var nameEQ = name + "=";
var ca = document.cookie.split(';');
for(var i=0 ; i < ca.length ; i++) {
var c = ca[i];
while (c.charAt(0) == ' ') {
c = c.substring(1, c.length);
}
if (c.indexOf(nameEQ) == 0) {
return true;
}
}
return false;
}
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