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第4章 页面组件

时间:2024-03-27 19:29:36浏览次数:20  
标签:function value item 组件 页面 data setData

一.  组件的定义及属性

 

 


 

 

1.1  语法格式如下:

 

< 标签名   属性名 = “属性值” > 内容.... < /标签名 >

 


 

id 组件的唯一表示,保持整个页面唯一,不常用


class 组件的样式类,对应 WXSS 中定义的样式  


style 组件的内联样式,可以动态设置内联样式

 

hidden 组件是否显示,所有组件默认显示


data - * 组件触发事件时,会发送给事件处理函数

以通过传入参数对象的currentTarget.dataset方式来获取自定义属性的值


bind * / catch * 绑定逻辑层相关事件处理函数

 

 


 

 

1.2  容器视图组件

 

主要包括:view,scroll - view 和 swiper 组件

 


 

 

示例代码如下:

 

//scroll-view.wxml
1 <view class="container"style = "padding:0rpx">
2	<!--垂直滚动,这里必须设置高度 -->	
3	<scroll -view scroll-top="||scrollTop||" scroll -y="true*	
4	style= " height:||scrollHeight }l px;" class =" list" bind.	
scrolltolower = "bindDownLoad"
bindscrolltoupper ="topLoad" bindscroll ="scroll">
5
6	<view class = "item"wx;for ="{{list}|">	
7	<image class = "img"src ="{{item.pic_url|}"></image>	
8	<view class = "text" >	
9	< text class ="title">|{item.name| } < /text >	
< text class = "description" >|{ item. short _de-
20
scription|| </text >
11	</view>	
12	</view >	
13	</scroll -view>	
14	<view class="body-view" >	
15	<loading hidden ="{ |hidden||"bindchange = "loadingChange">	
16	加载中...	
17	</loading >	
18	</view >	
19	</view >	
2021
22 //scroll-view.js
23 var url ="http://www.imooc.com/course/ajaxlist";24 var page = 0;
25 var page_size =5;26 var sort ="last";27 var is_easy =0;28 var lange_id =0;29 var pos_id =0;30 var unlearn =0;
32 //请求数据
33 var loadMore =function(that){
34	that.setData({	
35	hidden: false	
36	1);	
37 wx.request({38 url:url,39 data:{
40	page: page,	
41	page_size: page_size,	
42	sort: sort,	
43	is_easy: is_easy,	
44	lange_id: lange_id,	
45	pos_id:pos_id,	
46	unlearn: unlearn	
47  },
48 success: function(res){
49	//console.info(that.data.list);	
50	var list = that.data.list;	
51	for(var i = 0; i < res.data.list.length;i++){	
52	list.push(res.data.list[i]);	
53  }
54 that.setData(
55	list:list	
56 });
57 page ++;
58	that.setData(l	
59	hidden:true	
60 });61 {62);63
64 Page({
65	data:{
66	hidden; true,	
67	list:[],	
68	scrollTop:0,	
69	scrollHeight:0	
70  },
71 onl oad: function(){
72 //这里要注意,微信的scroll -view必须设置高度才能监听滚动事件,所以需要在面的 onl oad事件中为scroll-view的高度赋值74 var that = this;75 wx.getSystemInfo({
76	success: function(res){	
77	that.setData(l	
78	scrollheight:res.windowHeight	
79	1);	
80  }
81 1);
82 loadMore(that);83 1,
84 //页面滑动到底部
85 bindDownLoad;function()!
86	var that = this;	
87	loadMore(that);	
88	console.log("lower");	
89  },
90 scroll: function(event)
91 //该方法绑定了页面滚动时的事件,这里记录了当前的position.y的值,为了在请求数据后把页面定位到这里
93	this.setData(i	
94	scrollTop: event.detail.scrolltop	
95
96 },
97 topLoad: function(event)
98//该方法绑定了页面滑动到顶部的事件,然后做页面上拉刷新99 page =0;
100 this.setData(l
101	list:[],	
102	scrollTop:0	
103	1);	
104	loadMore(this);	
105	console.log("lower");	
106 }
107 1)
108 //scroll-view.wxss109.userinfol
110	display:flex;	
111	flex - direction:column;	
112	align - items:center;	
113
115 .userinfo - avatar
116	width:128rpx;	
117	height:128rpx;	
118	margin:20rpx;	
119	border -radius:50%:	
120 }121
122.userinfo -nickname 
123	color:#aaa:	
124 }
126 .usermotto{
127	margin-top:200px;	
128 }
130	/* */
132 scroll-view
133	width:100%;	
134 }
136 .item{
137	width:90%;	
138	height:300rpx;	
139	margin:20rpxauto;	
140	background;brown;	
141	overflow:hidden;	
142 }
143.item.img
144	width:430rpx:	
145	margin -right:20rpx;	
146	float:left;	
147 }
148 .title{
149	font -size:30rpx:	
150	display:block;	
151	margin:30rpxauto;	
152 }
153 .description
154	font -size:26rpx:	
155	line -height:15rpx;	
156 }

 

 

 

2.1 view 组件特有属性

228a79f28c294083a0d957100cb7acfe.png

fb9a794a0aab4f52a777f325012f479e.png

 

 

代码如下:

 

 

<view style = "text-align:center">默认 flex 布局</view>
<view style = "display:flex">
<view style = "border:1px solid #f00; flex-grow:1"> 1 </view>
<view style = "border:1px solid #f00; flex-grow:1"> 2 </view>
<view style = "border:1px solid #f00; flex-grow:1"> 3 </view>
</view>
<view style = "text-align:center"> 上下混合布局 </view>
<view style = "display: flex;flex-direction:column">
<view style = "border:1px solid #f00;" > 1 </view>
<view style = "display:flex">
<view style = "border:lpx solid #f00;flex-grow:l"> 2 </view>
<view	style = "border:1px solid #f00;flex-grow:2"> 3 </view>
</view>
</view>
<view style = "text-align:center"> 左右混合布局 </view>
<view style = "display:flex">
<view style = "border:lpx solid #f00;flex-grow:1"> 1 </view>
<view style = "display:flex; flex-direction:column; flex-grow:1">
<view style = "border:1px solid #f00; flex-grow:1"> 2 </view>
<view style = "border:lpx solid #f00; flex-grow:2"> 3 </view>
</view>
</view>

 

 

运行结果:

 

 

72078f7393734abe97eeaeef000149c2.png

 

 

 

2.2 scroll - view 组件属性 

405fbe02938c4eca8a34860d43251e9c.png

 

 

示例代码如下:

 

 

//scroll-view.wxml
1 <view class="container"style = "padding:0rpx">
2	<!--垂直滚动,这里必须设置高度 -->	
3	<scroll -view scroll-top="||scrollTop||" scroll -y="true*	
4	style= " height:||scrollHeight }l px;" class =" list" bind.	
scrolltolower = "bindDownLoad"
bindscrolltoupper ="topLoad" bindscroll ="scroll">
5
6	<view class = "item"wx;for ="{{list}|">	
7	<image class = "img"src ="{{item.pic_url|}"></image>	
8	<view class = "text" >	
9	< text class ="title">|{item.name| } < /text >	
< text class = "description" >|{ item. short _de-
20
scription|| </text >
11	</view>	
12	</view >	
13	</scroll -view>	
14	<view class="body-view" >	
15	<loading hidden ="{ |hidden||"bindchange = "loadingChange">	
16	加载中...	
17	</loading >	
18	</view >	
19	</view >	
2021
22 //scroll-view.js
23 var url ="http://www.imooc.com/course/ajaxlist";24 var page = 0;
25 var page_size =5;26 var sort ="last";27 var is_easy =0;28 var lange_id =0;29 var pos_id =0;30 var unlearn =0;
32 //请求数据
33 var loadMore =function(that){
34	that.setData({	
35	hidden: false	
36	1);	
37 wx.request({38 url:url,39 data:{
40	page: page,	
41	page_size: page_size,	
42	sort: sort,	
43	is_easy: is_easy,	
44	lange_id: lange_id,	
45	pos_id:pos_id,	
46	unlearn: unlearn	
47
48 success: function(res){
49	//console.info(that.data.list);	
50	var list = that.data.list;	
51	for(var i = 0; i < res.data.list.length;i++){	
52	list.push(res.data.list[i]);	
53
54 that.setData(
55	list:list	
56 |);
57 page ++;
58	that.setData(l	
59	hidden:true	
60 });61 |62 |);63
64 Page(|
65	data:{
66	hidden; true,	
67	list:[],	
68	scrollTop:0,	
69	scrollHeight:0	
70
71 onl oad: function()|
72 //这里要注意,微信的scroll -view必须设置高度才能监听滚动事件,所以需要在面的 onl oad事件中为scroll-view的高度赋值74 var that = this;75 wx.getSystemInfo({
76	success: function(res)|	
77	that.setData(l	
78	scrollheight:res.windowHeight	
79	1);	
80
81 1);
82 loadMore(that);83 1,
84 //页面滑动到底部
85 bindDownLoad;function()!
86	var that = this;	
87	loadMore(that);	
88	console.log("lower");	
89
90 scroll: function(event )
91 //该方法绑定了页面滚动时的事件,这里记录了当前的position.y的值,为了在请求数据后把页面定位到这里
93	this.setData(i	
94	scrollTop: event.detail.scrolltop	
95
96 |.
97 topLoad: function(event )
98//该方法绑定了页面滑动到顶部的事件,然后做页面上拉刷新99 page =0;
100 this.setData(l
101	list:[],	
102	scrollTop:0	
103	1);	
104	loadMore(this);	
105	console.log("lower");	
106
107 1)
108 //scroll-view.wxss109 .userinfol
110	display:flex;	
111	flex -direction:column;	
112	align -items:center;	
113
115 .userinfo -avatar
116	width:128rpx;	
117	height:128rpx;	
118	margin:20rpx;	
119	border -radius:50%:	
120 }121
122.userinfo -nickname 
123	color:#aaa:	
124 }
126 .usermotto{
127	margin-top:200px;	
128 }
130	/* */
132 scroll-view
133	width:100%;	
134 |
136 .item{
137	width:90%;	
138	height:300rpx;	
139	margin:20rpxauto;	
140	background;brown;	
141	overflow:hidden;	
142 }
143.item.img
144	width:430rpx:	
145	margin -right:20rpx;	
146	float:left;	
147 }
148 .title{
149	font -size:30rpx:	
150	display:block;	
151	margin:30rpxauto;	
152
153 .description
154	font -size:26rpx:	
155	line -height:15rpx;	
156 }

 

 

因网址没用,无运行结果

 

 

 

2.3 swiper 组件属性

a6400e03fbdd4c059e118c688dd83b30.png

 

 

 

 

1.2 swiper

 


swiper 组件可以实现轮播图、图片预览、滑动页面等效果。一个完整的 swiper 组件由 <swiper/> 和<swiper - item/>两个标签组成,不能单独使用

 


 

 

示例代码如下:

 

<swiper indicator-dots='true' autoplay='true' interval='5000' duration='1000'>
      <swiper-item>
          <image src="../image/bi.jpg" style="width: 100%"></image>
      </swiper-item>
      <swiper-item>
          <image src="../image/hjk.jpg" style="width: 100%"></image>
      </swiper-item>
      <swiper-item>
          <image src="../image/q.jpg" style="width: 100%"></image>
      </swiper-item>
</swiper>

 

 

运行结果:

 

 

bcc31068375b40f291a9ea2c1cc9784b.pnga4f5b855dec44ad68f96792ec149e83f.png

 

 


 

 

二.  基础内容组件 

 

 

基础内容组件包括icon,text 和 progress,主要用在视图页面中展示图标、文本和进度条等信息

 


 

 

1.3 icon

 


icon组件即图标组件,通常用于表示一种状态

 

 


 

 


2.4 icon组件属性

805df06cae7744a48305f5a6ea887178.png

 

 

 

示例代码如下:

 

<!--pages/leixin/leixin.wxml-->
<view> icon 类型:
<block wx:for="{{iconType}}">
<icon type ="{{item}}"/>{{item}}
</block>
</view>
<view> icon 大小:
<block wx:for="{{iconSize}}">
<icon type ="success" size ="{{item}}"/>{{item}}
</block>
</view>
<view> icon 颜色:
<block wx:for ="{{iconColor}}">
<icon type ="success" size ="30" color ="{{item}}"/>{{item}}
</block>
</view>
// leixin.js
Page({
  data:{
iconType:["success","success_no_circle","info","warn","wait-ing","cancel","download","search","clear"],
iconSize:[10,20,30,40],
iconColor:['#f00','#0f0','#00f']
}
})
// leixin.json
{
  "navigationBarBackgroundColor": "#FFFE91",
  "navigationBarTitleText": "类型",
  "navigationBarTextStyle":"black",
  "usingComponents": {}
}

 

 

运行结果:

4e3994bfa6d84c4988015798ac6fa284.png

 

 

 

 

1.3 text

 

 

text 组件用于展示内容,类似 HTML 中的 <span>,属于行内元素

 

 


 

 

2.4 text 组件属性

df63dd2e8f1b42e2b41dfc4b9f7638bf.png

 

 

 

示例代码如下:

 

<block wx:for="{{x}}" wx:for-item="x">
 <view class="aa">
  <block wx:for="{{25-x}}" wx:for-item="x">
   <text decode="{{true}}"space="{{true}}"></text>
  </block>
  <block wx:for="{{y}}" wx:for-item="y">
   <block wx:if="{{y<=2*x-1}}">
    <text>*</text>
  </block>
  </block>
 </view>
</block>
<block wx:for="{{x}}" wx:for-item="x">
  <view class="aa">
    <block wx:for="{{39+x}}" wx:for-item="x">
   <text decode="{{true}}"space="{{true}}"></text>
  </block>
  <block wx:for="{{y}}" wx:for-item="y">
   <block wx:if="{{y<=11-2*x}}">
    <text>*</text>
  </block>
  </block>
 </view>
</block>

 

 

运行结果:

 

 

2c883597fd0f471d86b40723232666d3.png

 

 

 

 

1.4 progress

 


progress 组件用于显示进度状态,如资源加载、用户资料完成度、媒体资源播放进度等

progress 组件属于块级元素

 

 


 

 


2.5 progress组件属性

894d387a0a15436a9139316a1587313a.png

 

 

 

示例代码如下:

 

<view> 显示百分比 </view>
<progress percent = '80' show-info = '80'> </progress>
<view> 改变宽度 </view>
<progress percent = '50' stroke-width = '2'> </progress>
<view> 自动显示进度条 </view>
<progress percent = '80' active> </progress>
  

 

 

运行结果:

1c0aa1cf33ec4b078c032f6dc1540276.png

 

 

 

 

三.  表单组件 

 

 

 1.5 button

 


button 组件用来实现用户和应用之间的交互,同时按钮的颜色起引导作用

当 <button> 被 <form/> 包裹时,可以通过设置form - type属性来触发表单对应的事件

 

 


 

 

 

2.6 buttom组件属性

e410c4a1062e47f7a1fb8374f2e7e42a.png

 

 

示例代码如下:

 

//button.wxml
<button type="default">type:default</button>
<button type="primary">type:primary</button>
<button type="warn">type:warn</button>
<button type="default" bindtap='buttonSize' size="{{ size }}"> 改变 size </button>
<button type="default" bindtap='buttonPlain' plain="{{ plain }}"> 改变 plain </button>
<button type="default" bindtap='buttonLoading' loading="{{ loading }}"> 改变 loading 显示 </button>
//button.js
Page({
  data:{
  size: 'default',
  plain: 'false',
  loading: 'false'
  },
  buttonSize: function(){
  if(this.data.size =="default")
  this.setData({ size:'mini'})
  else
  this.setData({size:'default'})
  },
  buttonPlain: function(){
  this.setData({ plain:! this.data.plain })},
  buttonLoading: function(){
  this.setData({ loading:! this.data.loading })
  }
  })

 

 

运行结果:

 

45d276d11c71496b80b7e793866298ae.png

 

 

 

 

1.6 radio

 

 

radio 单选框用来从一组选项中选取一个选项。在小程序中,单选框由<radio- group/ > (单项选择器)和<radio/>(单选项目)两个组件组合而成

 

 


 

 

2.7 radio- group 及 radio 组件属性

bb82d6acee70470d872ba5c0471ef101.png

 

 

示例代码如下:

 

 //radio.wxml
<view>选择您喜爱的城市:</view >
<radio-group bindchange = "citychange">
<radio value ="西安"> 西安 </radio >
<radio value ="北京"> 北京 </radio >
<radio value ="上海"> 上海 </radio >
<radio value ="广州"> 广州 </radio >
<radio value ="深圳"> 深圳 </radio >
</radio-group>
<view>你的选择:{{city}}</view>
<view>选择您喜爱的计算机语言:</view >
<radio-group class ="radio-group" bindchange ="radiochange">
<label class = "radio" wx:for ="{{radios}}">
<radio value ="{{item.value}}" checked="{{item.checked}}"/>
{{item.name}}
</label >
</radio-group>
<view >你的选择:{{lang}} </view >
//radio.js
Page({
  data:{
    radios:[
    { name:'java',value:'JAVA' },
{name:'python',value: 'Python',checked: 'true' },
{name:'php',value: 'PHP'},
{name:'swif',value:'swif'},
    ],
    city:"",
    lang:""
},
citychange: function(e){
this.setData({ city: e.detail.value });
},
radiochange: function(event){
this.setData({lang: event.detail.value});
console.log(event.detail.value)
}
})

 

 

运行结果:

 

ee3bcf2a56e34a47b608debf875c1d73.png

 

 

 

 

1.7 checkbox

 

 

复选框用于从一组选项中选取多个选项,小程序中复选框由<checkbox - group/>(多项选择器)和< checkbox/>(多选项目)两个组件

 

 


 

 

2.8 checkbox-group 及 checkbox 组件属性

83692f49149b4123a57ea229cb946bb7.png

 

 

示例代码如下:

 

 

//checkobx.wxml
<view>选择您想去的城市:</view >
<checkbox-group bindchange="cityChange" >
<label wx:for="{{citys}}">
<checkbox value ="{{item.value}}" checked='{{item.checked}}'>{{item.value}}
</checkbox>
</label >
</checkbox-group>
<view >您的选择是:{{city}} </view >
//checkbox.js
Page({
  city:"",
  data:
  {
  citys:[
  {name: 'km',value:'昆明'},
  {name: 'sy',value:'三亚'},
  {name: 'zh',value:'珠海',checked:'true'},
  {name: 'dl',value:'大连'}]
  },
  cityChange:function(e){
  console.log(e.detail.value);
  var city = e.detail.value;
  this.setData({city:city})
  }
})

 

 

运行结果:

 

80fed629e5364b1486edc72fc0e65189.png

 

 

 

1.8 switch

 


switch 组件的作用类似开关选择器

 

 


 

 

2.9 switch 组件属性 

3d43cc9451be4c999c7166733e868c8a.png

 

 

示例代码如下:

 

//switch.wxml
<view >
<switch bindchange="swl">{{var1}} </switch>
</view>
<view >
<switch checked bindchange="sw2">{{var2}} </switch>
</view >
<view >
<switch type ="checkbox" bindchange="sw3">{{var3}} </switch >
</view >
//switch.wxml
Page({
  data: {
  var1:'关',
  var2:'开',
  var3:'未选'
},
  swl:function(e){
  this.setData({varl: e.detail.value ?'开':'关'})
  },
  sw2: function(e){
  this.setData({var2: e.detail.value ?'开':'关'})
  },
  sw3: function(e){
  this,setData({var3:e.detail.value ?'已选':'未选'})
  }
  })

 

 

运行结果:

 

d855fe1a157c4574942a37dcccc5da4b.png

 

 

 

 

1.9 slider

 


slider 组件为滑动选择器,可以通过滑动来设置相应的值

 

 


 

 

3.0 slider组件属性

498a9abbc7a84d19962419fc20c8d60d.png

 

 

示例代码如下:

 

//slider.wxml
<view> 默认min=0 max=100 step=1 </view >
<slider ></slider >
<view>显示当前值</view >
<slider show-value> </slider >
<view> 设置min=20 max=200 step=10 </view >
<slider min='0' max='200' step='10'show-value > </slider >
<view> 背景条红色,已选定颜色绿色 </view >
<slider color="#f00" selected-color='#0f0'> </slider >
<view > 滑动改变 icon 的大小 </view >
<slider show-value bindchange='sliderchange'> </slider > 
<icon type ="success" size ='{{size}}'></icon >
//slider.js
Page({
  data: {
    size:'20'
  },
  sliderchange:function(e){
  this.setData({ size:e.detail.value})
  }
})

 

 

运行结果:

 

e9b059b720004100824a9c1bc0721385.png

 

 

 

2.0 picker


 
picker 组件为滚动选择器,当用户点击picker组件时,系统从底部弹出选择器供用户选择

 

picke组件目前支持5种选择器,分别是:selector 普通选择器,multiSelector 多列选择器,time 时间选择器,date 日期选择器、region 省市选择器

 


 

 


1. 普通选择器 mode=selector

 

 


3.1 picker组件中selector选择器属性

3286775dc39d4b288b299d31d98bad37.png

 

 

示例代码如下:

 

//picker.js
Page({
  data:{
  array:['Java','Python','c','c#'],
  objArray:[
  {id:0,name: 'Java'},
  {id:1,name: 'Python'},
  {id:2,name: 'C'},
  {id:3,name: 'C#'}
],
  index1:0,
  index2:0
  },
  arrayChange:function(e){
  console.log(' picker 值变为', e.detail.value)
  var index=0;
  this.setData({
  indexl:e.detail.value
  })
},
  objArrayChange: function(e){
  console.log('picker值变为', e.detail.value)
  this.setData({
    index2: e.detail.value
  })
}
})
//picker.wxml
<view >--- range 为数组 ---</view >
<picker range="{{array}}" value="{{index1}}" bindchange='arrayChange'>
当前选择:{{array[index1]}}</picker >
<view>--- range为数组对象 ---</view>
<picker
bindchange="objArrayChange" value = "{{index2}}" range-key="name" range="{{objArray}}">
当前选择:{{objArray[index2].name}}
</picker >

 

 

运行结果:

 

8b009672df174ad69b3ced7386a572c9.png

 

 

 

 

2. 多列选择器 mode=multiSelector

 

 

允许用户从不同列中选择不同的选择项,其选项是二维数组或数组对象

 

 


 

 

3.2 picker 组件 multiSelector 选择器属性

bc88ea406f874a9299532a90cb328f03.png

 

 

示例代码如下:

 

//picker2.wxml
<view> 多列选择器 </view>
<picke rmode="multiSelector" bindchange="bindMultiPicker-Change"bindcolumnchange="bindMultiPickerColumnChange"
value="{{multiIndex}}"
range="{{multiArray}}">
<view >
当前选择:{{multiArray[0][multiIndex[0]]}},{{multiArray[1][multi-Index[1]]}},{{multiArray[2][multiIndex[2]]}}
</view >
</picker >
//picker2.js
Page({
  data:{
  multiArray:[['陕西省','广东省'],['西安市','汉中市','延安市'],['雁塔区','长安区']],
  multiIndex:[0,0,0]
  },
  //绑定 Multipicker
bindMultiPickerChange:function(e){
  console.log('picker发送选择改变,携带值为',e.detail.value)
  this.setData({
  multiIndex:e.detail.value
  })
},
  //绑定 MultiPickerColumn
  bindMultiPickerColumnChange: function(e){
  console.log('修改的列为',e.detail.column,'值为',e.detail.value);
  var data={
  multiArray:this.data.multiArray,
  multiIndex: this.data.multiIndex
  };
  data.multiIndex[e.detai1.column]=e.detail.value;
  switch(e.detail.column){
    case0:
  switch(data.multiIndex[0]){
    case0:
  data.multiArray[1]=['西安市','汉中市','延安市'];
  data.multiArray[2]=['雁塔区','长安区'];
  break;
  casel:
  data.multiArray[1]=['深圳市','珠海市'];
  data,multiArray[2]=['南山区','罗湖区'];
  break;
  }
  data.multiIndex[1]=0;
  data.multiIndex[2]=0;
  break;
  casel:
  switch(data.multiIndex[0]){
  case0:
  switch(data.multiIndex[1]){
    case0:
    data.multiArray[2]=['雁塔区','长安区'];
    break;
    casel:
    data.multiArray[2]=['汉台区','南郑区'];
    break;
    case2:
    data.multiArray[2]=['宝塔区','子长县','延川县'];
    break;
  }
    break;
    casel:
    switch(data.multiIndex[1]){
    case0:
    data.multiArray[2]=['南山区','罗湖区'];
    break;
    casel:
    data.multiArray[2]=['香洲区','斗门区'];
    break;
    }
    break;
  }
    data.multiIndex[2]=0;
    console.log(data.multiIndex);
    break;
}
    this.setData(data);
},
})

 

 

 

 

3.3 picker 组件 time 选择器属性

bbe4905e12f949da921114b0c084f4ae.png

 

 

 

 

3.4 picker 组件 date 选择器属性

5f5ef0a014df4dc4acda90792b2096ed.png

 

 

示例代码如下:

 

//picker-datetime.js
Page({
  data:{
  startdate:2000, 
  enddate:2050, 
  date:'2018',
  starttime:'00:00', 
  endtime:'12:59',
  time:'8:00'
  },
  changedate: function(e){
  this.setData({ date: e.detail.value});
    console.log(e.detail.value)
  },
  changetime:function(e){
  this,setData({time: e.detail.value})
  console.log(e.detail.value)
  }
})
//picker-datetime.wxml
<view >
<picker mode="date" start="{{startdate}}" end="{{enddate}}"
value="{{date}}" bindchange="changedate" >
选择的日期:{{date}}
</picker >
</view >
<view>
<picker mode="time" start="{{starttime}}" end="{{endtime}}" bindchange="changetime" >
选择的时间:{{time}}
</picker >
</view >

 

 

运行结果:

 

e9faa574a8e346a6bf4cda04fb420720.png

 

 

 

 

3.5 picker 组件 region 选择器属性

8be20c4cab4e460fbe792d94b46c193a.png

 

示例代码如下:

 

//picker-region.wxml
<picker mode="region" value="{{region}}" custom-item="{{cust-omitem}}" bindchange ="changeregion" >
选择省市区:{{region[0]}},{{region[1]}},{{region[2]}}
</picker >
//picker-region.js
Page({
  data:{
  region:['陕西省','西安市','长安区'],
  customitem:'全部'
  },
  changeregion: function(e){
  console.log(e.detail.value)
  this.setData({
  region:e.detail.value
  })
}
})

 

 

运行结果:

 

f22bf75ed2414d13acccb7110c153f70.png

 

 

 

 

2.1 picker-view

 

picker-view 组件为嵌入页面的滚动选择器

 

组件的列的个数和列的内容由用户通过 <picker-view-column/> 自定义设置

 



 

3.6 picker-view 组件属性

 

 

标签:function,value,item,组件,页面,data,setData
From: https://blog.csdn.net/2301_79474431/article/details/136818106

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