HTML5web存储之localStorage

localStorage与cookie的作用类似,只能存储字符串,以键值对的方式进行存储;与cookie不同的是,可以存储更多的数据。

localStorage用于持久化的本地存储。

var skey = "StorageKey";

var svalue = "StorageValue";

1.存储键值对:

(1)window.localStorage.setItem(skey,svalue);

(2)window.localStorage.StorageKey = svalue;

(3)window.localStorage[skey] = svalue;

2.通过键获取值:

(1)svalue = window.localStorage.getItem(skey);

(2)svalue = window.localStorage.StorageKey;

(2)svalue = window.localStorage[skey];

3.同时获取localStorage中存储的键和值:

var allStorage = [];  //存储全部键值对的数组

for(var i=0;i

var oneStorage = {};  //存储一个键值对的对象

oneStorage.skey = window.localStorage.key(i); //获得一个localStorage的键

oneStorage.svalue = window.localStorage.getItem(oneStorage.skey);  //获得对应的值

allStorage.push(oneStorage);

}

return allStorage;

4.根据键删除值(根据键将值置空):

window.localStorage.setItem(key,"");

等其他类似存储键值对的方法


5.根据键删除键值对:

window.localStroage.removeItem(skey);

6.清空localStorage:

window.localStorage.clear();

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