128 lines
3.1 KiB
Plaintext
128 lines
3.1 KiB
Plaintext
// 默认缓存期限为7天
|
||
const DEFAULT_CACHE_TIME = 60 * 60 * 24 * 7;
|
||
|
||
/**
|
||
* 创建本地缓存对象
|
||
* @param {string=} prefixKey -
|
||
* @param {Object} [storage=localStorage] - sessionStorage | localStorage
|
||
*/
|
||
export const createStorage = ({ prefixKey = '', storage = localStorage } = {}) => {
|
||
/**
|
||
* 本地缓存类
|
||
* @class Storage
|
||
*/
|
||
const Storage = class {
|
||
private storage = storage;
|
||
private prefixKey?: string = prefixKey;
|
||
|
||
private getKey(key: string) {
|
||
return `${this.prefixKey}${key}`.toUpperCase();
|
||
}
|
||
|
||
/**
|
||
* @description 设置缓存
|
||
* @param {string} key 缓存键
|
||
* @param {*} value 缓存值
|
||
* @param expire
|
||
*/
|
||
set(key: string, value: any, expire: number | null = DEFAULT_CACHE_TIME) {
|
||
const stringData = JSON.stringify({
|
||
value,
|
||
expire: expire !== null ? new Date().getTime() + expire * 1000 : null,
|
||
});
|
||
this.storage.setItem(this.getKey(key), stringData);
|
||
}
|
||
|
||
/**
|
||
* 读取缓存
|
||
* @param {string} key 缓存键
|
||
* @param {*=} def 默认值
|
||
*/
|
||
get(key: string, def: any = null) {
|
||
const item = this.storage.getItem(this.getKey(key));
|
||
if (item) {
|
||
try {
|
||
const data = JSON.parse(item);
|
||
const { value, expire } = data;
|
||
// 在有效期内直接返回
|
||
if (expire === null || expire >= Date.now()) {
|
||
return value;
|
||
}
|
||
this.remove(key);
|
||
} catch (e) {
|
||
return def;
|
||
}
|
||
}
|
||
return def;
|
||
}
|
||
|
||
/**
|
||
* 从缓存删除某项
|
||
* @param {string} key
|
||
*/
|
||
remove(key: string) {
|
||
this.storage.removeItem(this.getKey(key));
|
||
}
|
||
|
||
/**
|
||
* 清空所有缓存
|
||
* @memberOf Cache
|
||
*/
|
||
clear(): void {
|
||
this.storage.clear();
|
||
}
|
||
|
||
/**
|
||
* 设置cookie
|
||
* @param {string} name cookie 名称
|
||
* @param {*} value cookie 值
|
||
* @param {number=} expire 过期时间
|
||
* 如果过期时间未设置，默认关闭浏览器自动删除
|
||
* @example
|
||
*/
|
||
setCookie(name: string, value: any, expire: number | null = DEFAULT_CACHE_TIME) {
|
||
document.cookie = `${this.getKey(name)}=${value}; Max-Age=${expire}`;
|
||
}
|
||
|
||
/**
|
||
* 根据名字获取cookie值
|
||
* @param name
|
||
*/
|
||
getCookie(name: string): string {
|
||
const cookieArr = document.cookie.split('; ');
|
||
for (let i = 0, length = cookieArr.length; i < length; i++) {
|
||
const kv = cookieArr[i].split('=');
|
||
if (kv[0] === this.getKey(name)) {
|
||
return kv[1];
|
||
}
|
||
}
|
||
return '';
|
||
}
|
||
|
||
/**
|
||
* 根据名字删除指定的cookie
|
||
* @param {string} key
|
||
*/
|
||
removeCookie(key: string) {
|
||
this.setCookie(key, 1, -1);
|
||
}
|
||
|
||
/**
|
||
* 清空cookie，使所有cookie失效
|
||
*/
|
||
clearCookie(): void {
|
||
const keys = document.cookie.match(/[^ =;]+(?==)/g);
|
||
if (keys) {
|
||
for (let i = keys.length; i--; ) {
|
||
document.cookie = keys[i] + '=0;expire=' + new Date(0).toUTCString();
|
||
}
|
||
}
|
||
}
|
||
};
|
||
return new Storage();
|
||
};
|
||
|
||
export const storage = createStorage();
|
||
|
||
export default Storage;
|