53 lines
1.6 KiB
JavaScript
53 lines
1.6 KiB
JavaScript
let timers = [];
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export default {
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exists(key) {
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const _ = localStorage.getItem('stored_keys');
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return _ ? _.split(',')?.indexOf(key) != -1 : false;
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},
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store(key, value, duration = null) {
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if (!localStorage.getItem('stored_keys')) localStorage.setItem('stored_keys', key);
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else localStorage.setItem('stored_keys', localStorage.getItem('stored_keys') + ',' + key);
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localStorage.setItem(key, JSON.stringify(value));
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console.log('store duration', duration)
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if (duration) {
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if (timers[key]) clearTimeout(timers[key]);
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timers[key] = setTimeout(() => {
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console.log("clear cache", key)
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this.clear([key]);
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}, duration * 1000);
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}
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},
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/**
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*
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* @param {*} key
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* @param {*} cb
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* @param {*} param2 force 强制更新，调用cb
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* @returns
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*/
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async getList(key, cb = null, { force = false, duration = null } = {}) {
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if (this.exists(key) && !force) {
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return JSON.parse(localStorage.getItem(key))
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} else {
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const list = await cb();
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this.store(key, list, duration);
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return list;
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}
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},
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clear(keys) {
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if (keys && keys.length) {
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let stored_keys = localStorage.getItem('stored_keys').split(',');
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keys.forEach((key) => {
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stored_keys = stored_keys.filter((item) => item != key);
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});
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localStorage.setItem('stored_keys', stored_keys);
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return;
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}
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localStorage.removeItem('stored_keys');
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},
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} |