Add support for baseURL parameter

axios.d.ts

@@ -49,6 +49,7 @@ declare module axios {
     xsrfCookieName?: string;
     xsrfHeaderName?: string;
     paramsSerializer?: (params: any) => string;
+    baseURL?: string;
   }
 
   interface RequestOptions extends InstanceOptions {

lib/axios.js

@@ -4,6 +4,8 @@ var defaults = require('./defaults');
 var utils = require('./utils');
 var dispatchRequest = require('./core/dispatchRequest');
 var InterceptorManager = require('./core/InterceptorManager');
+var isAbsoluteURL = require('./helpers/isAbsoluteURL');
+var combineURLs = require('./helpers/combineURLs');
 
 function Axios (defaultConfig) {
   this.defaultConfig = utils.merge({
@@ -29,6 +31,10 @@ Axios.prototype.request = function (config) {
 
   config = utils.merge(this.defaultConfig, { method: 'get' }, config);
 
+  if (config.baseURL && !isAbsoluteURL(config.url)) {
+    config.url = combineURLs(config.baseURL, config.url);
+  }
+
   // Don't allow overriding defaults.withCredentials
   config.withCredentials = config.withCredentials || defaults.withCredentials;
 

test/specs/options.spec.js

@@ -78,4 +78,42 @@ describe('options', function () {
       done();
     }, 0);
   });
+
+  it('should accept base URL', function (done) {
+    var request;
+
+    const instance = axios.create({
+      baseURL: 'http://test.com/'
+    });
+
+    instance.request({
+      url: '/foo'
+    });
+
+    setTimeout(function () {
+      request = jasmine.Ajax.requests.mostRecent();
+
+      expect(request.url).toBe('http://test.com/foo');
+      done();
+    }, 0);
+  });
+
+  it('should ignore base URL if request URL is absolute', function (done) {
+    var request;
+
+    const instance = axios.create({
+      baseURL: 'http://someurl.com/'
+    });
+
+    instance.request({
+      url: 'http://someotherurl.com/'
+    });
+
+    setTimeout(function () {
+      request = jasmine.Ajax.requests.mostRecent();
+
+      expect(request.url).toBe('http://someotherurl.com/');
+      done();
+    }, 0);
+  });
 });