JS_cookie

 

/*html*/

<input type="button" value="set" id="set"/>
<input type="button" value="get" id="get" />
<input type="button" value="det" id="det" />

/*js*/

function setCookie(name,value,day){
    var date = new Date();
    date.setDate(date.getDate()+day);
    document.cookie = name+"="+escape(value)+((day==null)?"":";expires="+date.toGMTString());
    }
function detCookie(name){
    var date = new Date();
    date.setTime(0);
    document.cookie = name+"=v;expires="+date.toGMTString();
    }
function getCookie(name){
    var str = document.cookie;
    var arr1 = str.split("; ");
    for(var i=0; i<arr1.length; i++){
        var arr2 = arr1[i].split("=");
        if(arr2[0]==name){return unescape(arr2[1])}
        }
    return null;
    }
document.getElementById("set").onclick = function(){
    setCookie("name","yao")
    setCookie("age","19 1")
    }
document.getElementById("get").onclick = function(){
    alert(getCookie("age"))
    }
document.getElementById("det").onclick = function(){
    detCookie("name")
    }