js中cookie的添加、取值、删除示例代码

function setCookie(name,value,time){ 
var oDate = new Date(); 
oDate.setDate(oDate.getDate()+time); 
document.cookie = name+"="+value+";expires="+oDate; 
} 
function getCookie(name){ 
var arr = document.cookie.split("; "); 
for(var i=0; i<arr.length; i++){ 
var arr2 = arr[i].split("="); 
if(arr2[0] == name){ 
return arr2[1]; 
} 
} 
return ""; 
} 
function removeCookie(name){ 
setCookie(name,"",0) 
}