axios is not defined...?

https://github.com/axios/axios

<script src="https://unpkg.com/axios/dist/axios.min.js"></script>

or

npm install axios

or

bower install axios

I came at the same issue. My steps:

npm install axios

Then putting

const axios = require('axios');

Just before calling axios.post() etc.

I also discovered that I accidentally commented out require('./bootstrap'); line in the resources\js\app.js file. Because I thought that it was Twitter's Bootstrap (and not Laravel's bootstrap - if you know what I mean). This prevented Laravel from using

window.axios = require('axios');

from the resources\js\bootstrap.js file. And that's why I needed const axios = require('axios'); in my method. With window.axios = require('axios'); it doesn't seem to be needed.

Ahh, I just have so much to learn.