应用Promise封装Ajax实践

axios在项目中经常使用，我们来看看如何把axios封装成好用的promise吧！

what is axios?

• Promise based HTTP client for the browser and node.js

咦? Promise based http？ where is promise?

源码中查看：axios/lib/adapters/xhr.js有这样一段让我眼前一亮：

module.exports = function xhrAdapter(config) {
 return new Promise(function dispatchXhrRequest(resolve, reject) {
 })
}