Axios is the recommended library for Vue for making HTTP requests. It's a very simple library, but it has some built-in features that help you in carrying out common operations. It implements a REST pattern for making requests with HTTP verbs and can also deal with concurrency (spawning multiple requests at the same time) in a function call. You can find more information at https://github.com/mzabriskie/axios.
Sending basic AJAX requests with Axios
Getting ready
For this recipe, you don't need any particular knowledge of Vue. We will use Axios, which itself uses JavaScript promises. If you have never heard of promises, you can have a primer at https://developers.google.com/web/fundamentals/getting-started/primers/promises.