##1.获取图片真实宽度 ~~~ imageLoad: function (e) {//获取图片真实宽度 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; this.setData({ imgheights: imgheights }) }, ~~~