一、存一个元素：window.localStorage.setItem

window.localStorage.setItem('cz_status','待支付');

取一个元素：window.localStorage.getItem

var zfStatus=window.localStorage.getItem('cz_status');

二、存一个数组：localStorage.setItem('key',JSON.stringify(arr);

var localSet = [{'cc':'ok'},{'cb':'kn'}];
window.localStorage.setItem('youyou',JSON.stringify(localSet));

取一个数组：localStorage.setItem('key',JSON.stringify(arr);

JSON.parse(window.localStorage.getItem("youyou"))

三、清除指定缓存：

window.localStorage.removeItem('pri');

清除所有缓存：

window.localStorage.clear();