微信小程序实现卡片层叠滑动效果

本文实例为大家分享了微信小程序之卡片层叠滑动效果的具体代码，供大家参考，具体内容如下

代码：

js：

// index/gun/jsSwiper2/jsSwiper2.js
Page({

 /**
  * 页面的初始数据
  */
 data: {
  startX: 0,
  endX: 0,
  iCenter: 3,
  datas: [{
   id: 1,
   zIndex: 2,
   opacity: 0.2,
   left: 40,
   iamge: "../../images/1.jpg",
   animation: null
  },
  {
   id: 2,
   zIndex: 4,
   opacity: 0.4,
   left: 80,
   iamge: "../../images/2.jpg",
   animation: null
  },
  {
   id: 3,
   zIndex: 6,
   opacity: 0.6,
   left: 120,
   iamge: "../../images/3.jpg",
   animation: null
  },
  {
   id: 4,
   zIndex: 8,
   opacity: 1,
   left: 160,
   iamge: "../../images/4.jpg",
   animation: null
  },
  {
   id: 5,
   zIndex: 6,
   opacity: 0.6,
   left: 200,
   iamge: "../../images/5.jpg",
   animation: null
  },
  {
   id: 6,
   zIndex: 4,
   opacity: 0.4,
   left: 240,
   iamge: "../../images/6.jpg",
   animation: null
  },
  {
   id: 7,
   zIndex: 2,
   opacity: 0.2,
   left: 280,
   iamge: "../../images/7.jpg",
   animation: null
  },
  ],
  order: []
 },

 /**
  * 生命周期函数--监听页面加载
  */
 onLoad: function (options) {
  this.__set__();
  this.move();
 },

 /**
  * 生命周期函数--监听页面初次渲染完成
  */
 onReady: function () {

 },

 /**
  * 生命周期函数--监听页面显示
  */
 onShow: function () {

 },

 /**
  * 生命周期函数--监听页面隐藏
  */
 onHide: function () {

 },

 /**
  * 生命周期函数--监听页面卸载
  */
 onUnload: function () {

 },

 /**
  * 页面相关事件处理函数--监听用户下拉动作
  */
 onPullDownRefresh: function () {

 },

 /**
  * 页面上拉触底事件的处理函数
  */
 onReachBottom: function () {

 },

 /**
  * 用户点击右上角分享
  */
 onShareAppMessage: function () {

 },
 move: function () {
  var datas = this.data.datas;
  /*图片分布*/
  for (var i = 0; i < datas.length; i++) {
   var data = datas[i];
   var animation = wx.createAnimation({
    duration: 200
   });
   animation.translateX(data.left).step();
   this.setData({
    ["datas[" + i + "].animation"]: animation.export(),
    ["datas[" + i + "].zIndex"]: data.zIndex,
    ["datas[" + i + "].opacity"]: data.opacity,
   })
  }
 },
 /**左箭头 */
 left: function () {
  //
  var last = this.data.datas.pop(); //获取数组的最后一个
  this.data.datas.unshift(last);//放到数组的第一个
  var orderFirst = this.data.order.shift();
  this.data.order.push(orderFirst);
  this.move();
 },
 /** */
 right: function () {
  var first = this.data.datas.shift(); //获取数组的第一个
  this.data.datas.push(first);//放到数组的最后一个位置
  var orderLast = this.data.order.pop();
  this.data.order.unshift(orderLast);
  this.move();
 },
 /**点击某项 */
 choose: function (e) {
  var that = this;
  var id = e.currentTarget.dataset.id;
  var order = that.data.order;
  var index = 0;
  for (var i = 0; i < order.length; i++) {
   if (id == order[i]) {
    index = i;
    break;
   }
  }
  if (index < that.data.iCenter) {
   for (var i = 0; i < that.data.iCenter - index; i++) {
    this.data.datas.push(this.data.datas.shift()); //获取第一个放到最后一个
    this.data.order.unshift(this.data.order.pop());
    // this.right()
   }
  } else if (index > that.data.iCenter) {
   for (var i = 0; i < index - that.data.iCenter; i++) {
    this.data.datas.unshift(this.data.datas.pop()); //获取最后一个放到第一个
    this.data.order.push(this.data.order.shift());
    // this.left();
   }
  }
  this.move();
 },
 /**新的排列复制到新的数组中 */
 __set__: function () {
  var that = this;
  var order = that.data.order;
  var datas = that.data.datas;
  for (var i = 0; i < datas.length; i++) {
   that.setData({
    ["order[" + i + "]"]: datas[i].id
   })
  }
 },
 //手指触发开始移动
 moveStart: function (e) {
  console.log(e);
  var startX = e.changedTouches[0].pageX;
  this.setData({
   startX: startX
  });
 },
 //手指触摸后移动完成触发事件
 moveItem: function (e) {
  console.log(e);
  var that = this;
  var endX = e.changedTouches[0].pageX;
  this.setData({
   endX: endX
  });
  //计算手指触摸偏移剧距离
  var moveX = this.data.startX - this.data.endX;
  //向左移动
  if (moveX > 20) {
   this.left();
  }
  if (moveX < -20) {
   this.right();
  }
 },
})

wxml：

<view class="teachers_banner">
 <view class="container clearfix teachers_b">
  <view class="slide" id="slide" bindtouchstart='moveStart' bindtouchend='moveItem'>

   <block wx:for="{{datas}}">
    <li animation="{{item.animation}}" style="z-index: {{item.zIndex}} ;opacity:{{item.opacity}};" bindtap="choose" data-id="{{item.id}}">
     <image src="{{item.iamge}}"></image>
    </li>
   </block>

  </view>
 </view>
</view>

wxss：

.teachers_banner {
 width: 100%;
 height: 650px;
 background-size: cover;
 position: relative;
 overflow: hidden;
}

.teachers_b {
 position: relative;
 margin-top: 80px;
}

#slide {
 margin: 0 auto;
 width: 100%;
 height: 350px;
 position: relative;
}

image {
 width: 400rpx;
 height: 550rpx;
}

#slide li {
 position: absolute;
 width: 400rpx;
 display: -webkit-box;
 display: -webkit-flex;
 display: flex;
 align-items: flex-start;
 -webkit-box-align: flex-start;
 -webkit-align-items: flex-start;
 overflow: hidden;
 box-shadow: 0 0 20px #1d374d;
}

#slide li img {
 width: 100%;
 height: 100%;
}

.slide_right {
 padding: 40px;
 -webkit-box-flex: 1;
 -webkit-flex: 1;
 flex: 1;
 min-width: 0;
}

.slide_right dl {
 padding-top: 10px;
}

.arrow .prev, .arrow .next {
 position: absolute;
 width: 50px;
 top: 38%;
 z-index: 9;
 font: 700 96px 'simsun';
 opacity: 0.3;
 color: #fff;
 cursor: pointer;
}

效果：

1.左右滑动时，向相应方向移动一个卡片位置；
2.点击某一项时，将点击项位置移动到中间位置；

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持我们。