js 设置，获取，删除cookie

     /tCookie('name' , '小明' , 1000);
      /tCookie('age' , '100' , 1000);
       //alert( getCookie('name') )
       removeCookie('name');


//获取cookie
function getCookie( key ) {
    var val = document.cookie.match( new RegExp('\\b'+key+'=([^;]+)(; |\$)') );
    return val?val[1]:'';
}
//设置cookie
function setCookie(key , value , time) {
    document.cookie = key +'='+value+';expires='+(new Date( new Date().getTime() + time*1000 )).toGMTString();
}
//删除cookie
function removeCookie(key) {
    setCookie(key , '' , -1);
}