mouse-event

Provides a normalized, cross-browser, garbage-collection-free API for reading out the state of a mouse event.

Why is this needed?

Because it is 2015 and somehow every major browser still disagrees on even the most basic details of MouseEvents. Seriously guys.

Example

var mouse = require('mouse-event')
 
window.addEventListener('mousemove', function(ev) {
  document.body.innerHTML =
    '<p>Buttons: ' + mouse.buttons(ev) + 
    ' x:' + mouse.x(ev) + 
    ' y:' + mouse.y(ev) + '</p>'
})

Try this in your browser

Install

npm i mouse-event

API

var mouse = require('mouse-event')

mouse.buttons(event)

Returns a bit vector, similar to event.which in WebKit encoding the state of the mouse buttons.

• event is a mouse event

Returns A bit vector with the following interpretation for the flags:

• 1 - left mouse
• 2 - right mouse
• 4 - middle mouse
• 8 - button 4
• 16 - button 5
• ...
• 1<<k - button k+1

mouse.x(event)

Returns the relative x-coordinate of the mouse event

• event is a mouse event

Returns The relative x-coordinate of event, similar to event.x in WebKit

mouse.y(event)

Returns the relative y-coordinate of the mouse event

• event is a mouse event

Returns The relative y-coordinate of event, similar to event.y in WebKit

mouse.element(event)

Get the element which triggered the event.

• event is a mouse event

Returns The target or srcElement or whatever it was that triggered the event

License

(c) 2015 Mikola Lysenko. MIT License