localstorage的使用

1.获取对象

var localstroage = window.localStorage;

2.存储值

localstroage.setItem('openid','hello');
localstroage.setItem('uid','10001');

3.获取值

varopenid = localstroage.getItem('openid');

4.删除某个值

localstroage.removeItem('openid');

5.删除所有值

localstroage.clear();

6.遍历所有键值

localStorage.uid = 1;

localStorage.sex='nan';

localStorage.age = 23;

for(vari = 0, len = localStorage.length; i < len; ++i ) {

console.log( localStorage.key( i ) +':'+ localStorage.getItem(localStorage.key( i ))  );

}

注意：

1. 如果不主动删除 localstorage 是不会自动清空的 不会像cookie一样清除

2. localstorage 几乎支持大部分浏览器 不用考虑IE8 的问题 大小为 5M