微信小程序开发之分页滑动栏代码展示

功能：

1.分页栏与滑动视图绑定
2.点击分页栏自动滑动到对应视图
3.滑动的到视图对应分页栏自动显示选中样式

上代码

wxml

<view class="tapNav">
 <view class="pw_tabArr.tabCurrentIndex==0?'active':''" data-index="0" bindtap="veHandle">分页标签1</view>
 <view class="pw_tabArr.tabCurrentIndex==1?'active':''" data-index="1" bindtap="veHandle">分页标签2</view>
 <view class="pw_tabArr.tabCurrentIndex==2?'active':''" data-index="2" bindtap="veHandle">分页标签3</view>
</view>
<swiper id="swiper" indicator-dots="pw_indicatorDots"
 autoplay="pw_autoplay" interval="pw_interval" duration="pw_duration" current="pw_current" bindchange="swiperChange">
 <block wx:for="pw_imgUrls">
 <swiper-item id="swiper-item">
  <image id="imgae" src="pw_item" class="slide-image" width="355" height="150"/>
 </swiper-item>
 </block>

</swiper>

wxss

/*
1.横向排列分页标签
2.每个分页标签各占1/3
*/
.tapNav {
 display: flex;
 flex-direction: row;
}
.tapNav view{
 flex:1;
 width:200rpx;
 height:100rpx;
 text-align: center;
 line-height: 100rpx;
 font-family: "微软雅黑";
}
/*选中样式*/
.tapNav .active {
 color:blue;
 border-bottom:4rpx solid mediumseagreen;
}
#swiper {
 margin-top:40rpx;
}
#swiper image{
 width:100%;
}

js

//index.js
//获取应用实例
var app = getApp()
Page({
 data: {
 // 图片地址
 imgUrls: [
  'http://img02.tooopen.com/images/20150928/tooopen_sy_143912755726.jpg',
  'http://img06.tooopen.com/images/20160818/tooopen_sy_175866434296.jpg',
  'http://img06.tooopen.com/images/20160818/tooopen_sy_175833047715.jpg'
 ],
 //是否显示面板指示点
 indicatorDots: true,
 //自动播放
 autoplay: true,
 //切换时间间隔
 interval: 2000,
 //滑动时长
 duration: 1000,
 //存放滑动视图的current
 current:0,
 //分页标签class条件判断的值
 tabArr:{
  tabCurrentIndex:0
 }
 },
 //事件处理函数
 //触摸分页标签触发事件
 veHandle:function(e){
 //每个分页标签都设置了data-index,触摸触发事件获取此数值
 //用此数值替换滑动视图的current
 //用此数值替换分页标签class判断的值
 console.log(e.target.dataset.index)
 var currentIndex = e.target.dataset.index
 this.setData({
  current:currentIndex,
  "tabArr.tabCurrentIndex":currentIndex
 })
 },
 //通过滑块视图的current改变触发事件
 swiperChange:function(e){
 //获取视图滑块当前的current
 //用此数值替换分页标签的current的值
 console.log(e.detail.current)
 var swiperCurrent = e.detail.current;
 this.setData({
  'tabArr.tabCurrentIndex':swiperCurrent
 })
 },
 onLoad: function () {
 console.log('onLoad')
 }
})

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