》》下拉组件
1.组件结构：
2.index.js：
1 //index.js
2 Component({
3 /**
4 * 组件的属性列表
5 */
6 properties: {
7 propArray: {
8 type: Array,
9 }
10 },
11 /**
12 * 组件的初始数据
13 */
14 data: {
15 selectShow: false,//初始option不显示
16 selectText: "请选择",//初始内容
17 },
18 /**
19 * 组件的方法列表
20 */
21 methods: {
22 //option的显示与否
23 selectToggle: function () {
24 var nowShow = this.data.selectShow;//获取当前option显示的状态
25
26 this.setData({
27 selectShow: !nowShow
28 })
29 },
30 //设置内容
31 setText: function (e) {
32 var nowData = this.properties.propArray;//当前option的数据是引入组件的页面传过来的，所以这里获取数据只有通过this.properties
33 var nowIdx = e.target.dataset.index;//当前点击的索引
34 var nowText = nowData[nowIdx].text || nowData[nowIdx].value || nowData[nowIdx];//当前点击的内容
35 //再次执行动画，注意这里一定，一定，一定是this.animation来使用动画
36 this.setData({
37 selectShow: false,
38 selectText: nowText,
39 })
40 this.triggerEvent(‘select‘, nowData[nowIdx])
41 }
42 }
43 })
3.index.json:
1 {
2 "component": true,
3 "usingComponents": {}
4 }
4.index.wxml:
1 <view class=‘ms-content-box‘>
2 <view class=‘ms-content‘ bindtap=‘selectToggle‘>
3 <view class=‘ms-text‘>{{selectText}}</view>
4 <view class="{{selectShow ? ‘icon-up‘ : ‘icon-down‘}}"></view>
5 </view>
6 <view class=‘ms-options‘ wx:if="{{selectShow}}">
7 <view wx:for="{{propArray}}" data-index="{{index}}" wx:key=‘index‘ class=‘ms-option‘ bindtap=‘setText‘>{{item.text || item.value || item}}</view>
8 </view>
9 </view>
5.index.wxss:
1 /* components/single-dropdown-select/index.wxss */
2
3 .ms-content-box {
4 width: 120px;
5 }
6
7 .ms-content {
8 border: 1px solid #e2e2e2;
9 background: white;
10 font-size: 16px;
11 position: relative;
12 height: 30px;
13 line-height: 30px;
14 }
15
16 .ms-text {
17 overflow: hidden;
18 text-overflow: ellipsis;
19 white-space: nowrap;
20 padding: 0 40px 0 6px;
21 font-size: 14px;
22 }
23
24 .ms-options {
25 background: white;
26 width: inherit;
27 position: absolute;
28 border: 1px solid #e2e2e2;
29 border-top: none;
30 box-sizing: border-box;
31 z-index: 3;
32 max-height: 120px;
33 overflow: auto;
34 }
35
36 .ms-option {
37 height: 30px;
38 line-height: 30px;
39 border-top: 1px solid #e2e2e2;
40 padding: 0 6px;
41 text-align: left;
42 overflow: hidden;
43 text-overflow: ellipsis;
44 white-space: nowrap;
45 font-size: 14px;
46 }
47
48 .ms-item:first-child {
49 border-top: none;
50 }
51
52 .icon-right, .icon-down, .icon-up {
53 display: inline-block;
54 padding-right: 13rpx;
55 position: absolute;
56 right: 20rpx;
57 top: 10rpx;
58 }
59
60 .icon-right::after, .icon-down::after, .icon-up::after {
61 content: "";
62 display: inline-block;
63 position: relative;
64 bottom: 2rpx;
65 margin-left: 10rpx;
66 height: 10px;
67 width: 10px;
68 border: solid #bbb;
69 border-width: 2px 2px 0 0;
70 }
71
72 .icon-right::after {
73 -webkit-transform: rotate(45deg);
74 transform: rotate(45deg);
75 }
76
77 .icon-down::after {
78 bottom: 14rpx;
79 -webkit-transform: rotate(135deg);
80 transform: rotate(135deg);
81 }
82
83 .icon-up::after {
84 bottom: 0rpx;
85 -webkit-transform: rotate(-45deg);
86 transform: rotate(-45deg);
87 }
》》使用方式(引用组件的页面)：
1.pindex.js:
1 Page({
2
3 /**
4 * 页面的初始数据
5 */
6 data: {
7 selectArray: [{
8 "id": "10",
9 "value": "会计类"
10 }, {
11 "id": "21",
12 "text": "工程类"
13 }, ‘技术类‘, {‘value‘: ‘其他‘}]
14 },
15
16 select: function(e) {
17 console.log(e.detail)
18 }
19
20 })
2.pindex.json:
1 {
2 "navigationBarTitleText":"下拉测试",
3 "usingComponents": {
4 "single-dropdown-select": "/components/single-dropdown-select/index"
5 }
6 }
3.pindex.wxml:
1 <view class="weui-cell">
2 <view class="weui-cell__hd">类型：</view>
3 <view class="weui-cell__bd">
4 <single-dropdown-select prop-array=‘{{selectArray}}‘ bind:select=‘select‘ />
6 </view>
7 </view>
4.效果图：
原文地址：https://www.cnblogs.com/muphy/p/11109734.html
时间： 2024-11-06 03:46:14