获取图片尺寸（宽高）

functiongetImageDimensions(url){returnnewPromise((resolve,reject){constimgnewImage();img.onloadfunction(){resolve({width:this.naturalWidth,height:this.naturalHeight});};img.onerrorreject;img.srcurl;});}// 使用示例getImageDimensions(https://fuss10.elemecdn.com/e/5d/4a731a90594a4af544c0c25941171jpeg.jpeg).then(dimensions{console.log(宽度${dimensions.width}px);console.log(高度${dimensions.height}px);}).catch(error{console.error(加载图片失败,error);});