const canvas = document.getElementById('canvas') const ctx = canvas.getContext('2d') const ColorBackgroud = '#000' const CanvasWidth = 1000, CanvasHeight = 500 const client = { id: "", io: io() } client.io.on('id', id => client.id = id) canvas.width = CanvasWidth canvas.height = CanvasHeight ctx.fillstyle = ColorBackgroud ctx.fillRect(0, 0, CanvasWidth, CanvasHeight) document.addEventListener('click', event => { console.log(event) switch (event.key) { case 'ArrowUp': break case 'ArrowDown': break case 'ArrowLeft': break case 'ArrowRight': break default: break } })