微信小程序实现卡片层叠滑动
本文实例为大家分享了微信小程序实现卡片层叠滑动的具体代码,供大家参考,具体内容如下
实现效果:
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;
代码如下:
wxml:
<view class="teachers_banner"> <view class="container clearfix teachers_b"> <view class="slide" id="slide" bindtouchstart='moveStart' bindtouchend='moveItem'> <ul> <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}}" alt="林奇涵" title=""></image> </li> </block> </ul> </view> </view> </view>
css:
/* index/gun/jsSwiper2/jsSwiper2.wxss */ /*轮播图片*/ .teachers_banner{ width:100%; height:575px; /* background: url(../images/teachers_banner.jpg) no-repeat center top; */ background-size: cover; position: relative; overflow: hidden; } .teachers_b{ position:relative; margin-top:130px; } #slide { margin: 0 auto; width: 100%; height: 330px; position: relative; } image{ width: 200rpx; height: 200rpx; } #slide li { position: absolute; width:200rpx; display: -webkit-box; display: -webkit-flex; display: flex; align-items: flex-start; -webkit-box-align: flex-start; -webkit-align-items: flex-start; background:#fff; overflow:hidden; box-shadow: 0 0 20px #1d374d; } #slide li img { width: 100%; height: 100%; } .slide_left{ /* width:240px;*/ } .slide_right{ /* width:440px;*/ padding: 40px; -webkit-box-flex: 1; -webkit-flex: 1; flex: 1; min-width: 0; } .slide_right h3{ font: 400 30px/18px "Microsoft Yahei"; color:#222222; } .slide_right h3 span{ display:inline-block; margin-left:10px; font: 400 14px/36px "Microsoft Yahei"; color:#555555; } .slide_right p{ padding:20px 0 30px; color:#555555; font: 400 14px/24px "Microsoft Yahei"; border-bottom: 1px solid #dbdbdb; } .slide_right dl{ padding-top:30px; } .slide_right dd{ float: left; width:33.3%; color:#777; font: 400 12px/24px "Microsoft Yahei"; } .slide_right dd h3{ color:#ff9000; margin-bottom:20px; } .arrow { /* display: none;*/ } .arrow .prev, .arrow .next { position: absolute; width: 64px; top: 38%; z-index: 9; font: 700 96px 'simsun'; opacity: 0.3; color: #fff; cursor: pointer; } .arrow .prev { /* left: -220px; */ } .arrow .next { /* right: -220px; */ } .arrow .prev:hover, .arrow .next:hover { color: #00a0e9; opacity: .7; }
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/teacher01.jpg", animation: null }, { id: 2, zIndex: 4, opacity: 0.4, left: 80, iamge: "../images/teacher02.jpg", animation: null }, { id: 3, zIndex: 6, opacity: 0.6, left: 120, iamge: "../images/teacher03.jpg", animation: null }, { id: 4, zIndex: 8, opacity:1, left: 160, iamge: "../images/teacher04.jpg", animation: null }, { id: 5, zIndex: 6, opacity: 0.6, left: 200, iamge: "../images/teacher05.jpg", animation: null }, { id: 6, zIndex: 4, opacity: 0.4, left: 240, iamge: "../images/teacher06.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(); } }, })
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