增删查询cookie

添加1 添加2 查询1 查询2 删除1 删除2 修改1 修改2

    }
    function lookfn(name) {
        // console.log(document.cookie);
        let str = document.cookie
        let arr1 = str.split(';')
        // console.log('arr1', arr1);
        for (let i = 0; i < arr1.length; i++) {
            let arr2 = arr1[i].split('=')
            //  console.log('arr2',arr2);
            if (arr2[0].trim() == name) {
                console.log(arr2[1]);
            }
        }
    }
    function delfn(name) {
        let oDate = new Date()
        oDate.setDate(oDate.getDate() - 1);
        document.cookie = name + '=123;expires=' + oDate
    }

</script>