微信小程序_(组件)scroll-view可滚动视图

 

 

  微信小程序scroll-view组件官方文档  传送门

 

  提前准备:使用<view>组件制作五条撑满的横向区域

 

<!--index.wxml-->
Cynical丶Gary
<view >
  
  <!-- 手指按下后1s样式由a改变为d,手指松开后2s样式由d改变回a  -->
  <view class='a size'>a</view>
  <view class='b size'>b</view>
  <view class='c size'>c</view>
  <view class='d size'>d</view>
  <view class='e size'>e</view>
</view>
index.wxml

 

.container{
  display: flex;

}

.size{
  width: 100%;
  height: 150rpx;
}

.a{
  background: red;
  order:1;
  flex:10;
}

.b{
  background: yellow;
  order:2;
  flex:2;
}

.c{
  background: blue;
  order:3;
  flex:1;
}

.d{
  background: green;
  order:4;
  flex:1;
}

.e{
  background: orange;
  order:5;
  flex:1;
}
index.wxss

 

  Learn

    一、scroll-y属性

    二、scroll-x属性

     

 

一、scroll-y属性

  scroll-y:允许纵向滚动【默认值false】

  使用<scroll-view>组件可以设置小程序中<view>组件纵向滚动,使用<scroll-view>组件时注意必须设置高度的样式如:style='height:300rpx'

 

<!--index.wxml-->
Cynical丶Gary
<scroll-view scroll-y="true" style='height:300rpx'>

  <!-- 手指按下后1s样式由a改变为d,手指松开后2s样式由d改变回a  -->
  <view class='a size'>a</view>
  <view class='b size'>b</view>
  <view class='c size'>c</view>
  <view class='d size'>d</view>
  <view class='e size'>e</view>

</scroll-view> 
index.wxml

 

.container{
  display: flex;

}

.size{
  width: 100%;
  height: 150rpx;
}

.a{
  background: red;
  order:1;
  flex:10;
}

.b{
  background: yellow;
  order:2;
  flex:2;
}

.c{
  background: blue;
  order:3;
  flex:1;
}

.d{
  background: green;
  order:4;
  flex:1;
}

.e{
  background: orange;
  order:5;
  flex:1;
}
index.wxss

 

  upper-threshold:距顶部/左边多远时(单位px,2.4.0起支持rpx),触发 scrolltoupper 事件【默认值50】

  lower-threshold:距底部/右边多远时(单位px,2.4.0起支持rpx),触发 scrolltolower 事件【默认值50】

  bindscrolltoupper:滚动到顶部/左边,会触发 scrolltoupper 事件

  bindscrolltolower:滚动到底部/右边,会触发 scrolltolower 事件

  给<scroller-view>组件添加滚动触发事件

<scroll-view scroll-y="true" style='height:300rpx;'  bindscrolltoupper="scrolltoupper" bindscrolltolower="scrolltolower" >

  并在index.js中添加scrolltoupper函数事件和scrolltolower函数事件

  scrolltoupper:function(){
      console.log("滚动到顶部");
  },
  scrolltolower:function(){
    console.log("滚动到底部");
  }

 

 

<!--index.wxml-->
Cynical丶Gary
<scroll-view scroll-y="true" style='height:300rpx;'
bindscrolltoupper="scrolltoupper" bindscrolltolower="scrolltolower" >

  <!-- 手指按下后1s样式由a改变为d,手指松开后2s样式由d改变回a  -->
  <view class='a size'>a</view>
  <view class='b size'>b</view>
  <view class='c size'>c</view>
  <view class='d size'>d</view>
  <view class='e size'>e</view>

</scroll-view> 
index.wxml

 

.container{
  display: flex;

}

.size{
  width: 100%;
  height: 150rpx;
}

.a{
  background: red;
  order:1;
  flex:10;
}

.b{
  background: yellow;
  order:2;
  flex:2;
}

.c{
  background: blue;
  order:3;
  flex:1;
}

.d{
  background: green;
  order:4;
  flex:1;
}

.e{
  background: orange;
  order:5;
  flex:1;
}
index.wxss

 

Page({
  data:{

  },

  scrolltoupper:function(){
      console.log("滚动到顶部");
  },
  scrolltolower:function(){
    console.log("滚动到底部");
  }

})
index.js

 

  当然我们也可以给<scroll-view>添加两个额外的属性upper-thresholdlower-threshold

  upper-threshold:距顶部/左边多远时(单位px,2.4.0起支持rpx),触发 scrolltoupper 事件【默认值50】

  lower-threshold:距底部/右边多远时(单位px,2.4.0起支持rpx),触发 scrolltolower 事件【默认值50】

  使用方法

<scroll-view scroll-y="true" style='height:300rpx;'
bindscrolltoupper="scrolltoupper" bindscrolltolower="scrolltolower" upper-threshold="0" lower-threshold="0">

 

 

  scroll-top:设置竖向滚动条位置(单位px,2.4.0起支持rpx)【无默认值】

  可以看到,当我们设置scroll-top="100"时,滚动条默认出现在距离顶部100px位置的地方,当我们设置scroll-top="150"时,滚动条默认出现在距离顶部150px位置的地方

 

<!--index.wxml-->
Cynical丶Gary
<scroll-view scroll-y="true" style='height:300rpx;'
bindscrolltoupper="scrolltoupper" bindscrolltolower="scrolltolower" 
upper-threshold="0"
lower-threshold="0"
scroll-top="150">

  <!-- 手指按下后1s样式由a改变为d,手指松开后2s样式由d改变回a  -->
  <view class='a size'>a</view>
  <view class='b size'>b</view>
  <view class='c size'>c</view>
  <view class='d size'>d</view>
  <view class='e size'>e</view>

</scroll-view> 
index.wxml

 

.container{
  display: flex;

}

.size{
  width: 100%;
  height: 150rpx;
}

.a{
  background: red;
  order:1;
  flex:10;
}

.b{
  background: yellow;
  order:2;
  flex:2;
}

.c{
  background: blue;
  order:3;
  flex:1;
}

.d{
  background: green;
  order:4;
  flex:1;
}

.e{
  background: orange;
  order:5;
  flex:1;
}
index.wxss

 

Page({
  data:{

  },

  scrolltoupper:function(){
      console.log("滚动到顶部");
  },
  scrolltolower:function(){
    console.log("滚动到底部");
  }

})
index.js

 

  enable-back-to-top:iOS点击顶部状态栏、安卓双击标题栏时,滚动条返回顶部,只支持竖向【默认值false】

  注意:微信小程序开发工具中默认在web环境中进行开发,而此属性需要在手机上运行~

  bindscroll:滚动时触发,event.detail = {scrollLeft, scrollTop, scrollHeight, scrollWidth, deltaX, deltaY}

  在index.js中添加滚动时触发的函数bindscroll()

  bindscroll:function(){
    console.log("滚动中~");
  }

  在index.wxml中进行事件绑定bindscroll="bindscroll"

  <scroll-view scroll-y="true" style='height:300rpx;'
  bindscrolltoupper="scrolltoupper" bindscrolltolower="scrolltolower" 
  upper-threshold="0"
  lower-threshold="0"
  scroll-top="150"
  enable-back-to-top="true"
  bindscroll="bindscroll">

 

 

<!--index.wxml-->
Cynical丶Gary
<scroll-view scroll-y="true" style='height:300rpx;'
bindscrolltoupper="scrolltoupper" bindscrolltolower="scrolltolower" 
upper-threshold="0"
lower-threshold="0"
scroll-top="150"
enable-back-to-top="true"
bindscroll="bindscroll">

  <!-- 手指按下后1s样式由a改变为d,手指松开后2s样式由d改变回a  -->
  <view class='a size'>a</view>
  <view class='b size'>b</view>
  <view class='c size'>c</view>
  <view class='d size'>d</view>
  <view class='e size'>e</view>

</scroll-view> 
index.wxml

 

Page({
  data:{

  },

  scrolltoupper:function(){
      console.log("滚动到顶部");
  },
  scrolltolower:function(){
    console.log("滚动到底部");
  },
  bindscroll:function(){
    console.log("滚动中~");
  }


})
index.js

  

  scroll-into-view:值应为某子元素id(id不能以数字开头)。设置哪个方向可滚动,则在哪个方向滚动到该元素

  index.wxml中给五个<view>组件添加id元素

  <view id="a" class='a size'>a</view>
  <view id="b" class='b size'>b</view>
  <view id="c" class='c size'>c</view>
  <view id="d" class='d size'>d</view>
  <view id="e" class='e size'>e</view>

 

 

  通过scroll-into-view给<scroll-view>组件添加属性

  <scroll-view scroll-y="true" style='height:300rpx;'
  bindscrolltoupper="scrolltoupper" bindscrolltolower="scrolltolower" 
  upper-threshold="0"
  lower-threshold="0"
  scroll-into-view="e"
  enable-back-to-top="true"
  bindscroll="bindscroll">

 

 

<!--index.wxml-->
Cynical丶Gary
<!-- scroll-top="150" -->
<scroll-view scroll-y="true" style='height:300rpx;'
bindscrolltoupper="scrolltoupper" bindscrolltolower="scrolltolower" 
upper-threshold="0"
lower-threshold="0"
scroll-into-view="e"
enable-back-to-top="true"
bindscroll="bindscroll">

  <!-- 手指按下后1s样式由a改变为d,手指松开后2s样式由d改变回a  -->
  <view id="a" class='a size'>a</view>
  <view id="b" class='b size'>b</view>
  <view id="c" class='c size'>c</view>
  <view id="d" class='d size'>d</view>
  <view id="e" class='e size'>e</view>

</scroll-view> 
index.wxml

 

Page({
  data:{

  },

  scrolltoupper:function(){
      console.log("滚动到顶部");
  },
  scrolltolower:function(){
    console.log("滚动到底部");
  },
  bindscroll:function(){
    console.log("滚动中~");
  }


})
index.js

 

 

二、scroll-x属性

  scroll-x:允许横向滚动【默认值为false】

  scroll-left:设置横向滚动条位置(单位px,2.4.0起支持rpx)

 

<!--index.wxml-->
Cynical丶Gary
<scroll-view class='container' scroll-x="true" style='height:300rpx;'
scroll-left="200">
  <!-- 手指按下后1s样式由a改变为d,手指松开后2s样式由d改变回a  -->
  <view id="a" class='a size'>a</view>
  <view id="b" class='b size'>b</view>
  <view id="c" class='c size'>c</view>
  <view id="d" class='d size'>d</view>
  <view id="e" class='e size'>e</view>
</scroll-view> 
index.wxml

 

.container{
  display: flex;
  white-space: nowrap;
}

.size{
  width: 250rpx;
  height: 150rpx;
  display:inline-block;
}

.a{
  background: red;
  order:1;
  flex:10;
}

.b{
  background: yellow;
  order:2;
  flex:2;
}

.c{
  background: blue;
  order:3;
  flex:1;
}

.d{
  background: green;
  order:4;
  flex:1;
}

.e{
  background: orange;
  order:5;
  flex:1;
}
index.wxss

 

Page({
  data:{

  },

  scrolltoupper:function(){
      console.log("滚动到顶部");
  },
  scrolltolower:function(){
    console.log("滚动到底部");
  },
  bindscroll:function(){
    console.log("滚动中~");
  }


})
index.js

 

posted @ 2019-03-30 14:58 Cynical丶Gary 阅读(...) 评论(...) 编辑 收藏