JSFiddle - React, Tailwind, and code Playground

HTML

<canvas id="myCanvas" width="300" height="300" >

CSS

canvas {
    border: 1px dotted black;
    background: blue;
}

JavaScript

(function() {
    // get the precentage of height and width  of the cavas based on the height and width of the window
    getPercentageOfWindow = function() {
        var viewportSize = getViewportSize();
        var canvasSize = getCanvastSize();
        return {
            x: canvasSize.width / (viewportSize.width - 10),
            y: canvasSize.height / (viewportSize.height - 10)
        };
    };
    //get the context of the canvas 
    getCanvasContext = function() {
        return $("#myCanvas")[0].getContext('2d');
    };
    // get viewport size
    getViewportSize = function() {
        return {
            height: window.innerHeight,
            width: window.innerWidth
        };
    };
    // get canvas size
    getCanvastSize = function() {
        var ctx = getCanvasContext();
        return {
            height: ctx.canvas.height,
            width: ctx.canvas.width
        };
    };
    // update canvas size
    updateSizes = function() {
        var viewportSize = getViewportSize();
        var ctx = getCanvasContext();
        ctx.canvas.height = viewportSize.height * percentage.y;
        ctx.canvas.width = viewportSize.width * percentage.x;
    };
    var percentage = getPercentageOfWindow();
    $(window).on('resize', function() {
        updateSizes();
    });
}());