微信小程序slider应用，可加减的slider控制

页面结构

1. <view class="control-w ">
2. <block wx:for="{{controls}}" wx:key="id" wx:for-item="v">
3. <view class="slide-item">
4. <view class="itemName">{{v.name}}</view>
5. <view class="slidewrap">
6. <text class="s-con" data-id="{{v.id}}" bindtap="minusCount">-</text>
7. <slider class="slide" bindchange="sliderchange" step="10" value="{{v.value}}" data-id="{{v.id}}" max="{{v.max}}" min="0" wx:if="{{index<3}}" />
8. <slider class="slide" bindchange="sliderchange" step="10" value="{{v.value}}" data-id="{{v.id}}" max="{{v.max}}" min="0" wx:if="{{index==3}}" />
9. <text class="s-con" data-id="{{v.id}}" data-max="{{v.max}}" bindtap="addCount">+</text>
10. </view>
11. </view>
12. </block>
13. </view>

js结构

1. Page({
2. data: {
3. controls: [
4. {
5. id: 1,
6. name: '功能一',
7. value: 30,
8. max: 60
9. },
10. {
11. id: 2,
12. name: '功能二',
13. value: 30,
14. max: 60
15. },
16. {
17. id: 3,
18. name: '功能三',
19. value: 30,
20. max: 60
21. },
22. {
23. id: 4,
24. name: '功能四',
25. value: 50,
26. max: 100
27. }
28. ]
29. },
30.  
31. // 控制加
32. addCount: function (event) {
33. let data = event.currentTarget.dataset
34. let controls = this.data.controls
35. let control = controls.find(function (v) {
36. return v.id == data.id
37. })
38. let control1 = controls.find(function (v) {
39. return v.max == data.max
40. })
41. 　　
42. if (control.value > control1.max)
43. return
44. control.value += 10;
45. this.setData({
46. 'controls': controls
47. })
48. },
49. // 控制减
50. minusCount: function (event) {
51. let data = event.currentTarget.dataset
52. let controls = this.data.controls
53. let control = controls.find(function (v) {
54. return v.id == data.id
55. })
56. if (control.value <= 0)
57. return
58. control.value -= 10;
59. this.setData({
60. 'controls': controls
61. })
62. },
63. //拖动
64. sliderchange: function (e) {
65. let data = e.currentTarget.dataset
66. let controls = this.data.controls
67. let control = controls.find(function (v) {
68. return v.id == data.id
69. })
70. this.setData({
71. 'controls': controls
72. })
73.  
74. }
75. })

页面样式