Question

有一个if条件

console.log中的结果不打印任何内容，并显示在浏览器控制台上 TypeError: Cannot read property 'to' of undefined 我被告知需要在对象内部破坏对象

instance.interceptors.response.use(
        (res) => {
            const { pathname } = window.location;
            const isRedirect = res.status === HTTP_TEMPORARY_REDIRECT;

            const data = { isRedirect, data: res.data };

            if (isRedirect) {
                console.log(`pathname: ${pathname}`);
                console.log(`isRedirect: ${isRedirect}`);
                const { redirectDataSource: { to: redirectRoute, ...redirectData } } 
                const {
                    redirectDataSource: { to: redirectRoute, ...redirectData },
                } = res.data.error || res.data;
                console.log(`redirectRoute: ${redirectRoute}`);
                console.log(`redirectDataSource: ${redirectDataSource}`);
            }

            return Promise.resolve(data);
        },
        ...

Answer 1

如果未定义，您需要为redirectDataSource添加默认值

let res = {
  data: {
    error: undefined,
    redirectDataSource: undefined
  }
}

const {
  redirectDataSource: {
    to: redirectRoute,
  } = {to: 'defaultValue'}
} = res.data.error || res.data;

console.log(redirectRoute)

javascript-无法销毁

1 个答案: