87 lines
2.0 KiB
JavaScript
87 lines
2.0 KiB
JavaScript
/**
|
||
* 缓存数据优化
|
||
* const storage = require('@/utils/storage');
|
||
* import storage from '@/utils/storage'
|
||
* 使用方法 【
|
||
* 一、设置缓存
|
||
* string storage.set('k', 'string你好啊');
|
||
* json storage.set('k', { "b": "3" }, 2);
|
||
* array storage.set('k', [1, 2, 3]);
|
||
* boolean storage.set('k', true);
|
||
* 二、读取缓存
|
||
* 默认值 storage.get('k')
|
||
* string storage.get('k', '你好')
|
||
* json storage.get('k', { "a": "1" })
|
||
* 三、移除/清理
|
||
* 移除: storage.remove('k');
|
||
* 清理：storage.clear();
|
||
* 】
|
||
* @type {String}
|
||
*/
|
||
|
||
const postfix = '_expiry' // 缓存有效期后缀
|
||
|
||
module.exports = {
|
||
|
||
/**
|
||
* 设置缓存
|
||
* @param {[type]} k [键名]
|
||
* @param {[type]} v [键值]
|
||
* @param {[type]} t [时间、单位秒]
|
||
*/
|
||
set(k, v, t) {
|
||
uni.setStorageSync(k, v)
|
||
const seconds = parseInt(t)
|
||
if (seconds > 0) {
|
||
let timestamp = Date.parse(new Date())
|
||
timestamp = timestamp / 1000 + seconds
|
||
uni.setStorageSync(k + postfix, timestamp + '')
|
||
} else {
|
||
uni.removeStorageSync(k + postfix)
|
||
}
|
||
},
|
||
|
||
/**
|
||
* 获取缓存
|
||
* @param {[type]} k [键名]
|
||
* @param {[type]} def [获取为空时默认]
|
||
*/
|
||
get(k, def) {
|
||
const deadtime = parseInt(uni.getStorageSync(k + postfix))
|
||
if (deadtime) {
|
||
if (parseInt(deadtime) < Date.parse(new Date()) / 1000) {
|
||
if (def) {
|
||
return def
|
||
} else {
|
||
return false
|
||
}
|
||
}
|
||
}
|
||
const res = uni.getStorageSync(k)
|
||
if (res) {
|
||
return res
|
||
}
|
||
if (def == undefined || def == "") {
|
||
def = false
|
||
}
|
||
return def
|
||
},
|
||
|
||
/**
|
||
* 删除指定缓存
|
||
* @param {Object} k
|
||
*/
|
||
remove(k) {
|
||
uni.removeStorageSync(k)
|
||
uni.removeStorageSync(k + postfix)
|
||
},
|
||
|
||
/**
|
||
* 清理所有缓存
|
||
* @return {[type]} [description]
|
||
*/
|
||
clear() {
|
||
uni.clearStorageSync()
|
||
}
|
||
}
|