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