Axios Progress Bar
This module aims to provide a simple usage of a progress bar for the HTTP requests made by Web applications that use the library axios. It's high inspired in the module angular-loading-bar and uses the awesome nprogress module to display the loading bar in the Browser.Attention: This module is not bound to any framework. You can use it in any Web application that uses axios.
Demo

Installation
It's available through the NPM package:npm install --save axios
npm install --save axios-progress-bar
Or via CDN:
<script src="https://cdn.rawgit.com/rikmms/progress-bar-4-axios/0a3acf92/dist/index.js"></script>
<script src="https://unpkg.com/axios/dist/axios.min.js"></script>
````
---
### Usage
Invoke (only one time) the function: `loadProgressBar(config, instance)`.
### Nprogress Config
The `config` argument is the configuration object for the [nprogress](https://www.npmjs.com/package/nprogress) and is not required. Its properties can be seen [here](https://www.npmjs.com/package/nprogress#configuration).
### Custom Axios Instance
You can pass a [Custom Axios Instance](https://github.com/axios/axios#custom-instance-defaults) as a second argument if needed, the argument is not required. If you don't set the `instance` argument the default axios instance will be used.
__Also, you need to import the CSS file ([nprogress.css](https://cdn.rawgit.com/rikmms/progress-bar-4-axios/0a3acf92/dist/nprogress.css)) that contains the customization of the progress bar.__
#### Example in ES6 using the import statement
```js
import { loadProgressBar } from 'axios-progress-bar'
loadProgressBar()
...
````
Don't forget to import the CSS in the HTML, or through JavaScript with some module bundler like [webpack](https://webpack.js.org/guides/asset-management/#loading-css).
```html
<link rel="stylesheet" type="text/css" href="https://cdn.rawgit.com/rikmms/progress-bar-4-axios/0a3acf92/dist/nprogress.css" />
import 'axios-progress-bar/dist/nprogress.css'
Example using plain HTML and JavaScript in the Browser
<!DOCTYPE html>
<html lang="en">
<head>
<link rel="stylesheet" type="text/css" href="https://cdn.rawgit.com/rikmms/progress-bar-4-axios/0a3acf92/dist/nprogress.css" />
</head>
<body>
...
</body>
<script src="https://unpkg.com/axios/dist/axios.min.js"></script>
<script src="https://cdn.rawgit.com/rikmms/progress-bar-4-axios/0a3acf92/dist/index.js"></script>
<script type="text/javascript">
loadProgressBar()
...
</script>
</html>
Tip
The CSS file contains the properties from the nprogress style. However, It's possible to override the properties or set new ones with a custom CSS.In the next example, the custom CSS only changes the color of the progress bar and the spinner to red.
<!DOCTYPE html>
<html lang="en">
<head>
<link rel="stylesheet" type="text/css" href="https://cdn.rawgit.com/rikmms/progress-bar-4-axios/0a3acf92/dist/nprogress.css" />
<style type="text/css">
#nprogress .bar {
background: red !important;
}
#nprogress .peg {
box-shadow: 0 0 10px red, 0 0 5px red !important;
}
#nprogress .spinner-icon {
border-top-color: red !important;
border-left-color: red !important;
}
</style>
</head>
<body>
...
</body>
<script src="https://unpkg.com/axios/dist/axios.min.js"></script>
<script src="https://cdn.rawgit.com/rikmms/progress-bar-4-axios/0a3acf92/dist/index.js"></script>
<script type="text/javascript">
loadProgressBar()
...
</script>
</html>

Bugs/Requests
Write them in the repository issues.Major changes
- version 1.1.0 - Split the CSS into a separate file. With this change, it's necessary to import the minimal CSS file manually.
- version 1.2.0 - Support for custom axios instances.