cache-localstorage

使用说明

（0）支持的方法

```
import LocalCache from 'cache-localstorage';
//setItem
LocaCache.set('tom','cat',3);
//getItem
LocaCache.get('tom');//return a json type
//expired or not
LocaCache.expired('tom');//return a boolean ,ture <=> expired ,false <=> not expired
//removeItem
LocalCache.remove('tom');
//return a boolen,true <=> has removed, false <=> not removed
//clear all
LocalCache.clear();
```

(1)how to use ?

Attention :

if you want to cache more datas ,you should use the key of "other" ,

and the key of "key"&"value"&"time"&"other" is unique ,you should according to rules ；

存储对象的key和value是名称和值，time是存储的时间，other是要存储的其他对象；这些关键字是固定的，不能改变；

A error set

eg:

```
    let a = {mykey : 'tom' ,myvalue : 'cat' ,mytime : 3, myother:{}};
    LocalCache.set(a);//存储a
    //this is an error set , you should not use key of "mykey"&"myvalue"&"mytime&myother" ;
    //must use key of " key, value, time ,other";
```

A correct set

```
    let a = {key : 'tom' ,value : 'cat' ,time : 3, other:{}};
    LocalCache.set(a);//存储a
```

1.setItem params is an object 存储，传入一个对象

eg:

    ```
    import LocalCache from 'cache-localstorage';
    let a = {key : 'tom' ,value : 'cat' ,time : 3, other:{}};
    LocalCache.set(a);//存储a
    ```

2.setItem params is array

存储，传入一个数组对象

```
import LocalCache from 'cache-localstorage';
let a = [{key:'tom',value:'cat'},{key : 'jack',value:'man'}];
LocalCache.set(a);//存储a
```

3.setItem , parms is string;

必传参数（key,value），选传参数（time， other）;

    ```
    import LocalCache from 'cache-localstorage';
    LocalCache.set('tom' ,'cat');//存储a
    LocalCache.set('tom','cat',3);//默认存储时间为一天
    LocalCache.set('tom','cat','sss');//第三个参数不为number则认为传的是第四个参数，time默认为一天
    LocalCache.set('tom','cat',2,'sss');//四个参数全部传的形态
    ```