微信小程序封装缓存过期时间

utils新建storage.js文件

1. var dtime = '_deadtime';

2. function put(k, v, t) {

3. wx.setStorageSync(k, v)

4. var seconds = parseInt(t);

5. if (seconds > 0) {

6. var timestamp = Date.parse(new Date());

7. timestamp = timestamp / 1000 + seconds;

8. wx.setStorageSync(k + dtime, timestamp + "")

9. } else {

10. wx.removeStorageSync(k + dtime)

11. }

12. }

13. function get(k, def) {

14. var deadtime = parseInt(wx.getStorageSync(k + dtime))

15. if (deadtime) {

16. if (parseInt(deadtime) < Date.parse(new Date()) / 1000) {

17. if (def) { return def; } else { return; }

18. }

19. }

20. var res = wx.getStorageSync(k);

21. if (res) {

22. return res;

23. } else {

24. return def;

25. }

26. }

27. function remove(k) {

28. wx.removeStorageSync(k);

29. wx.removeStorageSync(k + dtime);

30. }

31. function clear() {

32. wx.clearStorageSync();

33. }

34. module.exports = {

35. put: put,

36. get: get,

37. remove: remove,

38. clear: clear,

39. }

js引用

let util = require('../../utils/storage.js');

使用方法：

1. 设置缓存：util.put('key','value',604800) 表示设置缓存失效时间为一周；

2. 获取缓存：util.get('key')

3. 清除缓存：util.remove('key')

4. 清除所有缓存：util.clear()

   https://blog.csdn.net/weixin_44694538/article/details/103728983