根据图片地址获取图片宽高

        var src = 'https://image-devtest.myutopa.com/Flkqr5B7zLOS86u7x25OdkO5EaAq?e=1618555108&token=WNtUYaMiCdpTDzanlE03SjKXLinbmTzkLGXEBYC_:jTuCU1Em5thMybNYjxhk0_X-dKM='
        var img = new Image();

        img.src = src
        img.onload = function () {
            console.log(img.src);
            console.log(img.width);
            console.log(img.height);
        };


     

 

 

封装成方法：

var src = 'https://image-devtest.myutopa.com/Flkqr5B7zLOS86u7x25OdkO5EaAq?e=1618555108&token=WNtUYaMiCdpTDzanlE03SjKXLinbmTzkLGXEBYC_:jTuCU1Em5thMybNYjxhk0_X-dKM='

// 封装成方法
        let getImgInfo = (src) =>{
            let img = new Image();
            img.src = src;
            return {
                width: img.width,
                height: img.height
            }
        }
        console.log(getImgInfo(src)); // {width: 900, height: 1350}