js设置cookie和获取cookie

//设置cookie
function setCookie(name, value) {
	document.cookie = name + "=" + escape(value) + "; path=/";
}
 
//获取cookie
function getCookie(name) {
	var arr, reg = new RegExp("(^| )" + name + "=([^;]*)(;|$)");
 
	if (arr = document.cookie.match(reg))
 
		return unescape(arr[2]);
	else
		return null;
}