fetch网络请求封装示例详解

export default ({  url,  method = 'GET',  data = null,}) => {  // 请求配置  let options = {    method  }  // data不为空时，它就是post请求  if (data) {    options = {      ...options,      body: JSON.stringify(data),      headers: {        'content-type': 'application/json'      }    }  }  return fetch(url, options)    .then(res => res.json())    .then(data => data)}