copy-canvas

a more symantic way to duplicate an html5 canvas

Installation

Download node at nodejs.org and install it, if you haven't already.

npm install copy-canvas --save

Usage

// require module
var copyCanvas = require('copy-canvas');

// create canvas
let canvas = document.createElement('canvas')

// draw a circle
let ctx = canvas.getContext('2d')
ctx.beginPath()
ctx.arc(150, 100, 50, 0, 2 * Math.PI)
ctx.stroke()

// copy canvas
let copy = copyCanvas(canvas)

// verify
let copyData = copy.toDataURL('image/png')
let canvasData = canvas.toDataURL('image/png')
copyData === canvasData // true
copy.width === canvas.width // true
copy.height === canvas.height // true

API

copyCanvas(canvas) provided a canvas, returns a new canvas copy

License

MIT