<swiper bindchange="bindchange" indicator-dots="{{indicatorDots}}" autoplay="false" circular ='true' interval="5000" duration="1000">
<block wx:for="{{item.images}}" wx:for-item="itemName" wx:key='itemName'>
<swiper-item>
<image bindload="imageLoad" data- src="{{itemName}}" class="slide-image" mode="widthFix" />
</swiper-item>
</block>
</swiper>Page({
data:{
imgheights: [],//所有图片的高度
current:0
} ,
imageLoad(e){
//当图片载入完毕时
var imgwidth = e.detail.width,
imgheight = e.detail.height,
//宽高比
ratio = imgwidth / imgheight;
console.log(imgwidth, imgheight)
// 计算的高度值
var viewHeight = 750 / ratio;
var imgheight = viewHeight;
var imgheights = this.data.imgheights;
//把每一张图片的对应的高度记录到数组里
imgheights[e.target.dataset.id] = imgheight;
console.log('图片的高度：'+imgheights)
this.setData({
imgheights: imgheights
})
},
bindchange: function (e) {// current 改变时会触发 change 事件
this.setData({ current: e.detail.current }) },
})