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jwfetch

v2.0.5

Published

## 包含功能点

Readme

封装的fetch

包含功能点

  • 同一时间段重复请求会被缓存过滤掉
  • timeout
  • 取消请求

使用

封装ajax

import { Ajax } from "jwfetch";
Ajax.defaults.baseURL = "/api";

export const ajax = new Ajax();
export const get = ajax.get.bind(ajax);
export const post = ajax.post.bind(ajax);
export const request = ajax.ajax.bind(ajax);

拦截

// 请求拦截
ajax.interceptors.request.use(function(config) {
  config.headers = config.headers || {};
  config.headers.token = "abcd";
  return config;
}, function(err)  {
  throw err;
});

// 响应拦截
ajax.interceptors.response.use(function(data) {
  return data.slice(0, 10);
}, function(err)  {
  return Promise.reject(err);
});

调用

const url = '/api/user/info';
const data = {
  id: "aaa"
};
request({
  url,
  method: 'post',
  data
});
get(url, data);
post(url, data);

获取可取消的请求

const {promise, abort}  = ajax.getAbortResult(url, data, options);
promise.then((result) => console.log(result));
abort(); // 取消请求

const {promise2, abort2}  = ajax.postAbortResult(url, data, options);
promise2.then((result) => console.log(result));
abort2(); // 取消请求

ajax配置项

url

Type: string

method

Type: string

一般是get、post

baseURL

Type: string

请求url的前缀

headers

Type: any

添加的请求头

data

Type: any

请求数据,一般是个对象{}。

timeout

Type: number Default: 2 * 60 * 1000,2分钟

过期时间,单位ms。从请求开始,到这个时间如果接口没有响应,则会返回一个失败的promise。

timeoutErrorMessage

Type: string Default: timeout

过期时间错误提示

timeoutErrorStatus

Type: number Default: 504

过期时间状态码

credentials

Type: string Default: include

  • omit:忽略cookie的发送
  • same-origin: 表示cookie只能同域发送,不能跨域发送
  • include: cookie既可以同域发送,也可以跨域发送

mode

Type: string Default: cors

  • same-origin:该模式是不允许跨域的,它需要遵守同源策略,否则浏览器会返回一个error告知不能跨域;其对应的response type为basic。
  • cors: 该模式支持跨域请求,顾名思义它是以CORS的形式跨域;当然该模式也可以同域请求不需要后端额外的CORS支持;其对应的response type为cors。
  • no-cors: 该模式用于跨域请求但是服务器不带CORS响应头,也就是服务端不支持CORS;这也是fetch的特殊跨域请求方式;其对应的response type为opaque。

stoppedErrorMessage

Type: string Default: Ajax has been stopped!

当所有ajax停止后,提示错误信息。

isFile

Type: boolean

是否属于文件上传,如果是这样,会根据传递的data,创建一个FormData

isNoAlert

Type: boolean

是否要禁止默认提示错误信息。如果需要自己处理错误消息,则开启此项。

isUseOrigin

Type: boolean

为true时,直接返回response,不再处理结果

isEncodeUrl

Type: boolean

get请求时是否要进行浏览器编码

isOutStop

Type: boolean

当所有ajax请求停止时,是否要跳出请求。

signal

Type: AbortSignal

主动控制取消请求时可传递此参数,或者直接使用ajaxAbortResult方法。例如:

const controller = new AbortController();
const {signal} = controller;

cacheTimeout

Type: number

缓存时间

  • 如果是-1,代表不清除缓存。
  • 如果是0,代表不使用缓存。