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.jsPage({ /** * 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(); } },})