var order = ['red', 'yellow', 'blue', 'green']
Page({
data: {
toView: 'red',
scrollTop: 0
},
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 + 20
})
}
})
小程序Scroller-view 9小时的课程第31讲 这里为什么能够实现点击一下切换到下一个以及最后一个接到第一个?i每次都是从0开始啊
补充wxml代码
<view class="container">
<template is="head" data="{{title: 'scroll-view'}}"/>
<view class="page-body">
<view class="page-section">
<view class="page-section-title">
<text>Vertical Scroll\n纵向滚动</text>
</view>
<view class="page-section-spacing">
<scroll-view scroll-y="true" style="height: 300rpx;" bindscrolltoupper="upper" bindscrolltolower="lower" bindscroll="scroll" scroll-into-view="{{toView}}" scroll-top="{{scrollTop}}">
<view id="demo1" class="scroll-view-item demo-text-1"></view>
<view id="demo2" class="scroll-view-item demo-text-2"></view>
<view id="demo3" class="scroll-view-item demo-text-3"></view>
</scroll-view>
</view>
</view>
<view class="page-section">
<view class="page-section-title">
<text>Horizontal Scroll\n横向滚动</text>
</view>
<view class="page-section-spacing">
<scroll-view class="scroll-view_H" scroll-x="true" bindscroll="scroll" style="width: 100%">
<view id="demo1" class="scroll-view-item_H demo-text-1"></view>
<view id="demo2" class="scroll-view-item_H demo-text-2"></view>
<view id="demo3" class="scroll-view-item_H demo-text-3"></view>
</scroll-view>
</view>
</view>
</view>
<view class="container">
<template is="head" data="{{title: 'scroll-view'}}"/>
<view class="page-body">
<view class="page-section">
<view class="page-section-title">
<text>Vertical Scroll\n纵向滚动</text>
</view>
<view class="page-section-spacing">
<scroll-view scroll-y="true" style="height: 300rpx;" bindscrolltoupper="upper" bindscrolltolower="lower" bindscroll="scroll" scroll-into-view="{{toView}}" scroll-top="{{scrollTop}}">
<view id="demo1" class="scroll-view-item demo-text-1"></view>
<view id="demo2" class="scroll-view-item demo-text-2"></view>
<view id="demo3" class="scroll-view-item demo-text-3"></view>
</scroll-view>
</view>
</view>
<view class="page-section">
<view class="page-section-title">
<text>Horizontal Scroll\n横向滚动</text>
</view>
<view class="page-section-spacing">
<scroll-view class="scroll-view_H" scroll-x="true" bindscroll="scroll" style="width: 100%">
<view id="demo1" class="scroll-view-item_H demo-text-1"></view>
<view id="demo2" class="scroll-view-item_H demo-text-2"></view>
<view id="demo3" class="scroll-view-item_H demo-text-3"></view>
</scroll-view>
</view>
</view>
</view>