// Make a request for a user with a given IDaxios.get('/user?ID=12345').then(function (response) {console.log(response); }).catch(function (error) {console.log(error); });// Optionally the request above could also be done asaxios.get('/user', { params: { ID:12345 } }).then(function (response) {console.log(response); }).catch(function (error) {console.log(error); });
functiongetUserAccount() {returnaxios.get('/user/12345');}functiongetUserPermissions() {returnaxios.get('/user/12345/permissions');}axios.all([getUserAccount(),getUserPermissions()]).then(axios.spread(function (acct, perms) {// Both requests are now complete }));
axios API
Requests can be made by passing the relevant config to axios.
axios(config)
// Send a POST requestaxios({ method:'post', url:'/user/12345', data: { firstName:'Fred', lastName:'Flintstone' }});
axios(url[, config])
// Send a GET request (default method)axios('/user/12345');
Request method aliases
For convenience aliases have been provided for all supported request methods.
axios.request(config)
axios.get(url[, config])
axios.delete(url[, config])
axios.head(url[, config])
axios.post(url[, data[, config]])
axios.put(url[, data[, config]])
axios.patch(url[, data[, config]])
NOTE
When using the alias methods url, method, and data properties don't need to be specified in config.
Concurrency
Helper functions for dealing with concurrent requests.
axios.all(iterable)
axios.spread(callback)
Creating an instance
You can create a new instance of axios with a custom config.
axios.create([config])
var instance =axios.create({ baseURL:'https://some-domain.com/api/', timeout:1000, headers: {'X-Custom-Header':'foobar'}});
Instance methods
The available instance methods are listed below. The specified config will be merged with the instance config.
axios#request(config)
axios#get(url[, config])
axios#delete(url[, config])
axios#head(url[, config])
axios#post(url[, data[, config]])
axios#put(url[, data[, config]])
axios#patch(url[, data[, config]])
Request Config
These are the available config options for making requests. Only the url is required. Requests will default to GET if method is not specified.
{// `url` is the server URL that will be used for the request url:'/user',// `method` is the request method to be used when making the request method:'get',// default// `baseURL` will be prepended to `url` unless `url` is absolute.// It can be convenient to set `baseURL` for an instance of axios to pass relative URLs// to methods of that instance. baseURL:'https://some-domain.com/api/',// `transformRequest` allows changes to the request data before it is sent to the server// This is only applicable for request methods 'PUT', 'POST', and 'PATCH'// The last function in the array must return a string, an ArrayBuffer, or a Stream transformRequest: [function (data) {// Do whatever you want to transform the datareturn data; }],// `transformResponse` allows changes to the response data to be made before// it is passed to then/catch transformResponse: [function (data) {// Do whatever you want to transform the datareturn data; }],// `headers` are custom headers to be sent headers: {'X-Requested-With': 'XMLHttpRequest'},// `params` are the URL parameters to be sent with the request// Must be a plain object or a URLSearchParams object params: { ID:12345 },// `paramsSerializer` is an optional function in charge of serializing `params`// (e.g. https://www.npmjs.com/package/qs, http://api.jquery.com/jquery.param/) paramsSerializer:function(params) {returnQs.stringify(params, {arrayFormat:'brackets'}) },// `data` is the data to be sent as the request body// Only applicable for request methods 'PUT', 'POST', and 'PATCH'// When no `transformRequest` is set, must be of one of the following types:// - string, plain object, ArrayBuffer, ArrayBufferView, URLSearchParams// - Browser only: FormData, File, Blob// - Node only: Stream data: { firstName:'Fred' },// `timeout` specifies the number of milliseconds before the request times out.// If the request takes longer than `timeout`, the request will be aborted. timeout:1000,// `withCredentials` indicates whether or not cross-site Access-Control requests// should be made using credentials withCredentials:false,// default// `adapter` allows custom handling of requests which makes testing easier.// Return a promise and supply a valid response (see [response docs](#response-api)). adapter:function (config) {/* ... */ },// `auth` indicates that HTTP Basic auth should be used, and supplies credentials.// This will set an `Authorization` header, overwriting any existing// `Authorization` custom headers you have set using `headers`. auth: { username:'janedoe', password:'s00pers3cret' },// `responseType` indicates the type of data that the server will respond with// options are 'arraybuffer', 'blob', 'document', 'json', 'text', 'stream' responseType:'json',// default// `xsrfCookieName` is the name of the cookie to use as a value for xsrf token xsrfCookieName:'XSRF-TOKEN',// default// `xsrfHeaderName` is the name of the http header that carries the xsrf token value xsrfHeaderName:'X-XSRF-TOKEN',// default// `onUploadProgress` allows handling of progress events for uploads onUploadProgress:function (progressEvent) {// Do whatever you want with the native progress event },// `onDownloadProgress` allows handling of progress events for downloads onDownloadProgress:function (progressEvent) {// Do whatever you want with the native progress event },// `maxContentLength` defines the max size of the http response content allowed maxContentLength:2000,// `validateStatus` defines whether to resolve or reject the promise for a given// HTTP response status code. If `validateStatus` returns `true` (or is set to `null`// or `undefined`), the promise will be resolved; otherwise, the promise will be// rejected. validateStatus:function (status) {return status >=200&& status <300; // default },// `maxRedirects` defines the maximum number of redirects to follow in node.js.// If set to 0, no redirects will be followed. maxRedirects:5,// default// `httpAgent` and `httpsAgent` define a custom agent to be used when performing http// and https requests, respectively, in node.js. This allows to configure options like// `keepAlive` that are not enabled by default. httpAgent:newhttp.Agent({ keepAlive:true }), httpsAgent:newhttps.Agent({ keepAlive:true }),// 'proxy' defines the hostname and port of the proxy server// `auth` indicates that HTTP Basic auth should be used to connect to the proxy, and supplies credentials. // This will set an `Proxy-Authorization` header, overwriting any existing `Proxy-Authorization` custom headers you have set using `headers`.
proxy: { host:'127.0.0.1', port:9000, auth: : { username:'mikeymike', password:'rapunz3l' } },// `cancelToken` specifies a cancel token that can be used to cancel the request// (see Cancellation section below for details) cancelToken:newCancelToken(function (cancel) { })}
Response Schema
The response for a request contains the following information.
{// `data` is the response that was provided by the server data: {},// `status` is the HTTP status code from the server response status:200,// `statusText` is the HTTP status message from the server response statusText:'OK',// `headers` the headers that the server responded with headers: {},// `config` is the config that was provided to `axios` for the request config: {}}
When using then, you will receive the response as follows:
When using catch, or passing a rejection callback as second parameter of then, the response will be available through the error object as explained in the Handling Errors section.
Config Defaults
You can specify config defaults that will be applied to every request.
// Set config defaults when creating the instancevar instance =axios.create({ baseURL:'https://api.example.com'});// Alter defaults after instance has been createdinstance.defaults.headers.common['Authorization'] =AUTH_TOKEN;
Config order of precedence
Config will be merged with an order of precedence. The order is library defaults found in lib/defaults.js, then defaults property of the instance, and finally config argument for the request. The latter will take precedence over the former. Here's an example.
// Create an instance using the config defaults provided by the library// At this point the timeout config value is `0` as is the default for the libraryvar instance =axios.create();// Override timeout default for the library// Now all requests will wait 2.5 seconds before timing outinstance.defaults.timeout =2500;// Override timeout for this request as it's known to take a long timeinstance.get('/longRequest', { timeout:5000});
Interceptors
You can intercept requests or responses before they are handled by then or catch.
// Add a request interceptoraxios.interceptors.request.use(function (config) {// Do something before request is sentreturn config; },function (error) {// Do something with request errorreturnPromise.reject(error); });// Add a response interceptoraxios.interceptors.response.use(function (response) {// Do something with response datareturn response; },function (error) {// Do something with response errorreturnPromise.reject(error); });
If you may need to remove an interceptor later you can.
var myInterceptor =axios.interceptors.request.use(function () {/*...*/});axios.interceptors.request.eject(myInterceptor);
You can add interceptors to a custom instance of axios.
var instance =axios.create();instance.interceptors.request.use(function () {/*...*/});
Handling Errors
axios.get('/user/12345').catch(function (error) {if (error.response) {// The request was made, but the server responded with a status code// that falls out of the range of 2xxconsole.log(error.response.data);console.log(error.response.status);console.log(error.response.headers); } else {// Something happened in setting up the request that triggered an Errorconsole.log('Error',error.message); }console.log(error.config); });
You can define a custom HTTP status code error range using the validateStatus config option.
axios.get('/user/12345', {validateStatus:function (status) {return status <500; // Reject only if the status code is greater than or equal to 500 }})
You can create a cancel token using the CancelToken.source factory as shown below:
var CancelToken =axios.CancelToken;var source =CancelToken.source();axios.get('/user/12345', { cancelToken:source.token}).catch(function(thrown) {if (axios.isCancel(thrown)) {console.log('Request canceled',thrown.message); } else {// handle error }});// cancel the request (the message parameter is optional)source.cancel('Operation canceled by the user.');
You can also create a cancel token by passing an executor function to the CancelToken constructor:
var CancelToken =axios.CancelToken;var cancel;axios.get('/user/12345', { cancelToken:newCancelToken(functionexecutor(c) {// An executor function receives a cancel function as a parameter cancel = c; })});// cancel the requestcancel();
Note: you can cancel several requests with the same cancel token.
Using application/x-www-form-urlencoded format
By default, axios serializes JavaScript objects to JSON. To send data in the application/x-www-form-urlencoded format instead, you can use one of the following options.
Browser
In a browser, you can use the URLSearchParams API as follows:
var params =newURLSearchParams();params.append('param1','value1');params.append('param2','value2');axios.post('/foo', params);
Note that URLSearchParams is not supported by all browsers, but there is a polyfill available (make sure to polyfill the global environment).
Alternatively, you can encode data using the qs library:
var qs =require('qs');axios.post('/foo',qs.stringify({ 'bar':123 });
Node.js
In node.js, you can use the querystring module as follows:
var querystring =require('querystring');axios.post('http://something.com/',querystring.stringify({ foo:'bar' });
You can also use the qs library.
Semver
Until axios reaches a 1.0 release, breaking changes will be released with a new minor version. For example 0.5.1, and 0.5.4 will have the same API, but 0.6.0 will have breaking changes.
Promises
axios depends on a native ES6 Promise implementation to be supported. If your environment doesn't support ES6 Promises, you can polyfill.
axios is heavily inspired by the $http service provided in Angular. Ultimately axios is an effort to provide a standalone $http-like service for use outside of Angular.