WeChat applet tutorial wxapp view container scroll-view

This article mainly introduces the relevant information of the wxapp view container scroll-view in the WeChat applet tutorial. Friends in need can refer to

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scroll-view

Scrollable view area.

##scroll-topNumberSet the vertical scroll bar positionscroll-leftNumberSet the horizontal scroll bar positionscroll-into-viewStringThe value should be If the id of a child element is specified, scroll to the element, and the top of the element is aligned with the top of the scroll area bindscrolltoupperEventHandleScroll Go to the top/left, the scrolltoupper event will be triggeredbindscrolltolowerEventHandleScroll to the bottom/right, the scrolltolower will be triggered EventbindscrollEventHandleTriggered when scrolling, event.detail = {scrollLeft, scrollTop, scrollHeight, scrollWidth, deltaX, deltaY}

Attribute name	Type	Default value	Description
scroll-x	Boolean	false	Allow horizontal scrolling
scroll-y	Boolean	false	Allow vertical scrolling
upper-threshold	Number	50	How far away from the top/left (unit px) is to trigger the scrolltoupper event
lower-threshold	Number	50	How far away from the bottom/right (unit px) is to trigger the scrolltolower event

When using vertical scrolling, you need to give a fixed height and set the height through WXSS.

Sample code:

<view class="section">
 <view class="section__title">vertical scroll</view>
 <scroll-view scroll-y="true" style="height: 200px;" bindscrolltoupper="upper" bindscrolltolower="lower" bindscroll="scroll" scroll-into-view="{{toView}}" scroll-top="{{scrollTop}}">
 <view id="green" class="scroll-view-item bc_green"></view>
 <view id="red" class="scroll-view-item bc_red"></view>
 <view id="yellow" class="scroll-view-item bc_yellow"></view>
 <view id="blue" class="scroll-view-item bc_blue"></view>
 </scroll-view>

 <view class="btn-area">
 <button size="mini" bindtap="tap">click me to scroll into view </button>
 <button size="mini" bindtap="tapMove">click me to scroll</button>
 </view>
</view>
<view class="section section_gap">
 <view class="section__title">horizontal scroll</view>
 <scroll-view class="scroll-view_H" scroll-x="true" style="width: 100%">
 <view id="green" class="scroll-view-item_H bc_green"></view>
 <view id="red" class="scroll-view-item_H bc_red"></view>
 <view id="yellow" class="scroll-view-item_H bc_yellow"></view>
 <view id="blue" class="scroll-view-item_H bc_blue"></view>
 </scroll-view>
</view>

var order = ['red', 'yellow', 'blue', 'green', 'red']
Page({
 data: {
 toView: 'red',
 scrollTop: 100
 },
 upper: function(e) {
 console.log(e)
 },
 lower: function(e) {
 console.log(e)
 },
 scroll: function(e) {
 console.log(e)
 },
 tap: function(e) {
 for (var i = 0; i < order.length; ++i) {
  if (order[i] === this.data.toView) {
  this.setData({
   toView: order[i + 1]
  })
  break
  }
 }
 },
 tapMove: function(e) {
 this.setData({
  scrollTop: this.data.scrollTop + 10
 })
 }
})
scroll-view

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