获取图片长宽
方法1:
let url ="图片地址"; function imageSize(url) { return new Promise(function (resolve, reject) { let image = new Image(); image.onload = function () { resolve({ width: image.width, height: image.height }); }; image.onerror = function () { reject(new Error('error')); }; image.src = url; }); } (async () => { let vh = await imageSize(url); })();
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