utils
新建storage.js文件
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var dtime = '_deadtime';
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function put(k, v, t) {
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wx.setStorageSync(k, v)
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var seconds = parseInt(t);
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if (seconds > 0) {
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var timestamp = Date.parse(new Date());
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timestamp = timestamp / 1000 + seconds;
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wx.setStorageSync(k + dtime, timestamp + "")
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} else {
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wx.removeStorageSync(k + dtime)
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}
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}
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function get(k, def) {
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var deadtime = parseInt(wx.getStorageSync(k + dtime))
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if (deadtime) {
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if (parseInt(deadtime) < Date.parse(new Date()) / 1000) {
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if (def) { return def; } else { return; }
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}
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}
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var res = wx.getStorageSync(k);
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if (res) {
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return res;
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} else {
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return def;
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}
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}
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function remove(k) {
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wx.removeStorageSync(k);
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wx.removeStorageSync(k + dtime);
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}
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function clear() {
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wx.clearStorageSync();
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}
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module.exports = {
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put: put,
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get: get,
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remove: remove,
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clear: clear,
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}
js引用
let util = require('../../utils/storage.js');
使用方法:
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设置缓存:util.put('key','value',604800) 表示设置缓存失效时间为一周;
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获取缓存:util.get('key')
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清除缓存:util.remove('key')
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