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await new Promise((resolve, reject) => {
const xhr = (this.xhr = new XMLHttpRequest());
xhr.open("put", uploadUrl);
xhr.setRequestHeader("auth", "xxx");
xhr.upload.onprogress = (event) => {
if (event.lengthComputable) {
console.log("上传进度", event.loaded / event.total);
}
};
xhr.onerror = () => {
reject("上传失败！");
};
xhr.onabort = () => {
reject("已取消上传");
};
xhr.upload.onabort = () => {
reject("已取消上传");
};
xhr.onload = () => {
if (xhr.status === 200) {
resolve();
}
};
xhr.send(file);
}).catch((e) => {
throw new Error(e);
});
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