NProgress

Slim progress bars for Ajax'y applications. Inspired by Google, YouTube, and Medium.

Installation

Add nprogress.js and nprogress.css to your project.

<script src='nprogress.js'></script>
<link rel='stylesheet' href='nprogress.css'/>

NProgress is available via bower and npm.

$ bower install --save nprogress
$ npm install --save nprogress

Basic usage

Simply call start() and done() to control the progress bar.

NProgress.start();
NProgress.done();

Using Turbolinks or similar? Ensure you're using Turbolinks 1.3.0+, and use this: (explained here)

$(document).on('page:fetch',   function() { NProgress.start(); });
$(document).on('page:change',  function() { NProgress.done(); });
$(document).on('page:restore', function() { NProgress.remove(); });

Ideas

Add progress to your Ajax calls! Bind it to the jQuery ajaxStart and ajaxStop events.
Make a fancy loading bar even without Turbolinks/Pjax! Bind it to $(document).ready and $(window).load.

Advanced usage

Percentages: To set a progress percentage, call .set(n), where n is a number between 0..1.

NProgress.set(0.0);     // Sorta same as .start()
NProgress.set(0.4);
NProgress.set(1.0);     // Sorta same as .done()

Incrementing: To increment the progress bar, just use .inc(). This increments it with a random amount. This will never get to 100%: use it for every image load (or similar).

NProgress.inc();

If you want to increment by a specific value, you can pass that as a parameter:

NProgress.inc(0.2);    // This will get the current status value and adds 0.2 until status is 0.994

Force-done: By passing true to done(), it will show the progress bar even if it's not being shown. (The default behavior is that .done() will not do anything if .start() isn't called)

NProgress.done(true);

Get the status value: To get the status value, use .status

Configuration

`minimum`

Changes the minimum percentage used upon starting. (default: 0.08)

NProgress.configure({ minimum: 0.1 });

`template`

You can change the markup using template. To keep the progress bar working, keep an element with role='bar' in there. See the default template for reference.

NProgress.configure({
  template: "<div class='....'>...</div>"
});

`ease` and `speed`

Adjust animation settings using ease (a CSS easing string) and speed (in ms). (default: ease and 200)

NProgress.configure({ ease: 'ease', speed: 500 });

`trickle`

Turn of the automatic incrementing behavior by setting this to false. (default: true)

NProgress.configure({ trickle: false });

`trickleRate` and `trickleSpeed`

You can adjust the trickleRate (how much to increase per trickle) and trickleSpeed (how often to trickle, in ms).

NProgress.configure({ trickleRate: 0.02, trickleSpeed: 800 });

`showSpinner`

Turn off loading spinner by setting it to false. (default: true)

NProgress.configure({ showSpinner: false });

`parent`

specify this to change the parent container. (default: body)

NProgress.configure({ parent: '#container' });

Customization

Just edit nprogress.css to your liking. Tip: you probably only want to find and replace occurances of #29d.

The included CSS file is pretty minimal... in fact, feel free to scrap it and make your own!

Resources

New UI Pattern: Website Loading Bars (usabilitypost.com)

Support

Bugs and requests: submit them through the project's issues tracker.

Questions: ask them at StackOverflow with the tag nprogress.

Chat: join us at gitter.im.
![Chat](http://img.shields.io/badge/gitter-rstacruz / nprogress-brightgreen.svg)

Thanks

NProgress © 2013-2014, Rico Sta. Cruz. Released under the MIT License.
Authored and maintained by Rico Sta. Cruz with help from contributors.

ricostacruz.com · GitHub @rstacruz · Twitter @rstacruz

License

acelot/nprogress

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