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https://github.com/hakimel/Ladda

Buttons with built-in loading indicators.
https://github.com/hakimel/Ladda

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Buttons with built-in loading indicators.

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README 

        
# Ladda



Buttons with built-in loading indicators, effectively bridging the gap between action and feedback.



[Check out the demo page](https://lab.hakim.se/ladda/).



## Installation



`npm install ladda`



### Module bundling



Ladda 2.x is distributed as a standard ES6 module. Since not all browsers/environments support native

ES6 modules, it is recommended to use a bundler such as Rollup,

Parcel, or Webpack to create

a production-ready code bundle.



## Usage



### CSS



You will need to include ONE of the two style sheets in the **/dist** directory.

If you want the button styles used on the demo page, use the **ladda.min.css** file.

If you want to have the functional buttons without the visual style (colors, padding, etc.),

use the **ladda-themeless.min.css** file.



### HTML



Below is an example of a button using the `expand-right` animation style.



```html

Submit

```



When the JS code runs to bind Ladda to the button, the `ladda-button` class

will be automatically added if it doesn't already exist. Additionally, a span

with class `ladda-label` will automatically wrap the button text, resulting

in the following DOM structure:



```html



    Submit



```



Buttons accept the following attributes:

- **data-style**: one of the button styles *[required]*

  - expand-left, expand-right, expand-up, expand-down

  - contract, contract-overlay

  - zoom-in, zoom-out

  - slide-left, slide-right, slide-up, slide-down

- **data-color**: green/red/blue/purple/mint

- **data-size**: xs/s/l/xl, defaults to medium

- **data-spinner-size**: pixel dimensions of spinner, defaults to dynamic size based on the button height

- **data-spinner-color**: a hex code or any named CSS color, defaults to `#fff`

- **data-spinner-lines**: the number of lines for the spinner, defaults to `12`



### JavaScript



Start by importing the Ladda module:



```javascript

import * as Ladda from 'ladda';

```



The following approach is recommended for JavaScript control over your buttons:



```javascript

// Create a new instance of ladda for the specified button

var l = Ladda.create(document.querySelector('.my-button'));



// Start loading

l.start();



// Will display a progress bar for 50% of the button width

l.setProgress(0.5);



// Stop loading

l.stop();



// Toggle between loading/not loading states

l.toggle();



// Check the current state

l.isLoading();



// Delete the button's ladda instance

l.remove();

```



To show the loading animation for a form that is submitted to the server

(always resulting in a page reload) the `bind()` method can be used:



```javascript

// Automatically trigger the loading animation on click

Ladda.bind('button[type=submit]');



// Same as the above but automatically stops after two seconds

Ladda.bind('button[type=submit]', {timeout: 2000});

```



Note: when using the `bind()` method on buttons that are inside a form,

loading indicators will not be shown until the form is valid.



All loading animations on the page can be stopped by using:



```javascript

Ladda.stopAll();

```



## Browser support



Ladda has been tested in Firefox, Microsoft Edge, Chrome, and Internet Explorer 11.

It also Should Work™ in Safari and Internet Explorer 10.



## Changelog



## License



MIT