cookie.js

采用JSP + Ajax + 文本来演示多选、全选

activeCookie = true;
if(document.cookie==null){
	//alert("cookie没有开启！");
	 activeCookie = false;
}

function getCookie(name) {
    if( !activeCookie  ) return;
	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;
}

function setCookie(name , value)
{
    if( !activeCookie  ) return;
	var expdate = new Date();
	expdate.setTime(expdate.getTime() + (365*24*120));
	document.cookie=""+ name + "=" + value +";expires="+ expdate.toGMTString();
}