TrainSignManage/WebFrame/bower_components/fastclick/README.md

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# FastClick #

FastClick is a simple, easy-to-use library for eliminating the 300ms delay between a physical tap and the firing of a `click` event on mobile browsers. The aim is to make your application feel less laggy and more responsive while avoiding any interference with your current logic.

FastClick is developed by [FT Labs](http://labs.ft.com/), part of the Financial Times.

[Explication en français](http://maxime.sh/2013/02/supprimer-le-lag-des-clics-sur-mobile-avec-fastclick/).

[日本語で説明](https://developer.mozilla.org/ja/docs/Mozilla/Firefox_OS/Apps/Tips_and_techniques#Make_events_immediate)。

## Why does the delay exist? ##

According to [Google](https://developers.google.com/mobile/articles/fast_buttons):

> ...mobile browsers will wait approximately 300ms from the time that you tap the button to fire the click event. The reason for this is that the browser is waiting to see if you are actually performing a double tap.

## Compatibility ##

The library has been deployed as part of the [FT Web App](http://app.ft.com/) and is tried and tested on the following mobile browsers:

* Mobile Safari on iOS 3 and upwards
* Chrome on iOS 5 and upwards
* Chrome on Android (ICS)
* Opera Mobile 11.5 and upwards
* Android Browser since Android 2
* PlayBook OS 1 and upwards

## When it isn't needed ##

FastClick doesn't attach any listeners on desktop browsers.

Chrome 32+ on Android with `width=device-width` in the [viewport meta tag](https://developer.mozilla.org/en-US/docs/Mobile/Viewport_meta_tag) doesn't have a 300ms delay, therefore listeners aren't attached.

```html
<meta name="viewport" content="width=device-width, initial-scale=1">
```

Same goes for Chrome on Android (all versions) with `user-scalable=no` in the viewport meta tag. But be aware that `user-scalable=no` also disables pinch zooming, which may be an accessibility concern.

For IE11+, you can use `touch-action: manipulation;` to disable double-tap-to-zoom on certain elements (like links and buttons).  For IE10 use `-ms-touch-action: manipulation`.

## Usage ##

Include fastclick.js in your JavaScript bundle or add it to your HTML page like this:

```html
<script type='application/javascript' src='/path/to/fastclick.js'></script>
```

The script must be loaded prior to instantiating FastClick on any element of the page.

To instantiate FastClick on the `body`, which is the recommended method of use:

```js
if ('addEventListener' in document) {
	document.addEventListener('DOMContentLoaded', function() {
		FastClick.attach(document.body);
	}, false);
}
```