从服务获取数据时，我想使用Fetch抓取数据后，再赋值给receiveData请问怎么实现？

Question

我想使用Fetch抓取数据后，返回抓取的数据，但是现在我调用postFromServer函数，无法等到Fetch，就直接返回一个undefined，请问如何解决这个问题？

module.exports = {
    postFromServer ( requestParam ) {
            const _self = this;
            let url = requestParam['url'] || '';
            let headers = requestParam['headers'] || '';
            let postBody = requestParam['postBody'] || '';
            let response = _self.sendToServer( url, 'POST', headers, postBody );

            response.then(function(value) {
                console.log('第三方 value === ', value)
                if( value['code'] === 200 ) {
                    return value
                }
            }, function(error) {
                console.log('第三方 error === ', error)
            });
        }
}

import Helper from 'common-helper-es6';
let receiveData = await Helper.postFromServer( requestParam );

Answer 1

加一个return就可以了

module.exports = {
    postFromServer ( requestParam ) {
            const _self = this;
            let url = requestParam['url'] || '';
            let headers = requestParam['headers'] || '';
            let postBody = requestParam['postBody'] || '';
            let response = _self.sendToServer( url, 'POST', headers, postBody );

            return response.then(function(value) {
                console.log('第三方 value === ', value)
                if( value['code'] === 200 ) {
                    return value
                }
            }, function(error) {
                console.log('第三方 error === ', error)
            });
        }
}

Answer 2

return response.then...