Applet micro-channel pull-down frame assembly

"" Drop-down component

1. The module structure:

2.index.js：

. 1  // The index.js 
2  the Component ({
 . 3    / * *
 . 4     * properties of the component list
 . 5     * / 
. 6    Properties: {
 . 7      propArray: {
 . 8        type: the Array,
 . 9      }
 10    },
 . 11    / * *
 12 is     the initial component * data
 13 is     * / 
14    data: {
 15      selectShow: to false , // initial option is not displayed 
16      selectText: "select", // initial content 
17    }
 18    / * *
 19    * The method of assembly of the list
 20 is     * / 
21 is    Methods: {
 22 is      // option to display or not 
23 is      selectToggle: function () {
 24        var nowShow = the this .data.selectShow; // Get the current state of the displayed option 
25  
26 is        the this .setData ({
 27          selectShow:! nowShow
 28        })
 29      },
 30      // set the content 
31 is      the setText: function (E) {
 32        var nowData = the this .properties.propArray; //Option is the introduction of the current component data pass over the page, it is only where the data acquired by this.properties 
33 is        var nowIdx = e.target.dataset.index; // current click index 
34 is        var nowText = nowData [nowIdx] .text nowData || [nowIdx] || nowData .Value [nowIdx]; // current click content 
35        // Animate again, note there must, necessarily, must be animated this.animation 
36        the this .setData ({
 37 [          selectShow : to false ,
 38 is          selectText: nowText,
 39        })
 40        the this .triggerEvent ( 'SELECT' , nowData [nowIdx])
 41 is      }
 42 is    }
 43 is })

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 }

 

"" Use (reference page component):

1.pindex.js:

. 1  Page ({
 2  
. 3    / * *
 . 4     * page initial data
 . 5     * / 
. 6    Data: {
 . 7      selectArray: [{
 . 8        "ID": "10" ,
 . 9        "value": "Accounting class"
 10      }, {
 11        "ID": "21 is" ,
 12 is        "text": "Engineering"
 13      }, 'technical category', { 'value': 'other'} ]
 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>

 Fig 4. Effects: