javascript – react-native fetch async / await response filtering

我的服务器响应如建筑物：[record1,record2,…],我想从该响应中只得到数组.我怎样才能从Promise获得数组？我尝试了一些异步/等待的东西,但我不明白如何在这段代码中使用它：

setupImpagination() {
    ....
    fetch(pageOffset, pageSize, stats) {
        return fetch(`http://localhost:3000/api/building/all?skip=${pageOffset}&limit=${pageSize}`)
            .then(response => {
            console.log('response.json() => ',response.json());
            response.json()
            })
            .catch((error) => {
            console.error(error);
            });

    }
    });
}

解决方法:

然后

 fetch(pageOffset, pageSize, stats) {
        return fetch(`http://localhost:3000/api/building/all?skip=${pageOffset}&limit=${pageSize}`)
            .then(response => {
               console.log('response.json() => ',response.json());
               response.json()
            }).then(responseJson => {
               return responseJson.buildings
            }).catch((error) => {
               console.error(error);
            });

        }
    });

异步/等待方式：

 fetch(pageOffset, pageSize, stats) {
       try {
           const response = await fetch(`http://localhost:3000/api/building/all?skip=${pageOffset}&limit=${pageSize}`);
           const responseJson = await response.json();
           return responseJson.buildings;
       } catch(error){
            console.error(error);
       }

标签：javascript,async-await,promise,react-native,fetch-api
来源： https://codeday.me/bug/20190715/1464931.html