小程序简单计时器的制作，也可用于倒计时，以录音计时为例：
1. // 计时器
2. function timer(that){
3. // timeout则跳出递归
4. if (that.data.record == 0){
5. return;
6. }
7. if(that.data.min == 10){
8. return;
9. }
10. let sec = that.data.sec * 1
11. let min = that.data.min * 1
12. sec += 1
13. if(sec < 10){
14. sec = '0' + sec;
15. }else if(sec == 60){
16. sec = '00'
17. min += 1
18. }
19. if(min < 10){
20. min = '0' + min
21. }
22. that.setData({
23. sec: sec,
24. min: min
25. })
26. setTimeout(function(){
27. timer(that);
28. },1000)
29. }
30. Page({
31.
32. /**
33. * 页面的初始数据
34. */
35. data: {
36. record: 0, // 录音按钮显示状态
37. sec: '00',
38. min: '00',
39. },
40.
41. // 开始录音
42. startRecord: function (e) {
43. let that = this;
44. that.setData({
45. sec: '00'
46. })
47. recorderManager.start(options);
48. recorderManager.onStart(() => {
49. that.setData({
50. record: 1
51. })
52. timer(that);
53. })
54. },
55. // 停止录音
56. stopRecord: function (e) {
57. let that = this;
58. recorderManager.stop();
59. recorderManager.onStop((res) => {
60. console.log('recorder stop', res)
61. const { tempFilePath } = res
62. wx.showToast({
63. title: '录音保存成功',
64. icon: 'success',
65. duration: 2000
66. })
67. that.setData({
68. record: 0
69. })
70. timer(that);
71. })
72. },
73. })