function loadImageAsync(url) {      return new Promise(function(resolve, reject) {        throw new Error('BUG FOREVER')        const image = new Image();        image.onload = function() {          resolve(image);        };        image.onerror = function() {          reject(new Error('Could not load image at ' + url));        };        image.src = url;      });    }    let src1='https://image.suning.cn/uimg/sop/commodity/213287247648868791262800_x.jpg'    let src2='https://image.suning.cn/uimg/sop/commodity/742303264420020864606900_x.jpg'    let img1=loadImageAsync(src1)    let img2=loadImageAsync(src2)   img1.then(function(img){        console.log('第一個圖片 height='+img.height)        return img2    }).then(function(img){        console.log('第二個圖片 width='+img.width)    }).catch(function(err){        console.log('fail'+err)    })