JSFiddle - React, Tailwind, and code Playground
by flyingL123
HTML
<script src="https://rawgit.com/kangax/fabric.js/master/dist/fabric.js"></script>
<canvas id="c" height="300" width="300"></canvas>
JavaScript
var canvas = new fabric.Canvas('c');
canvas.backgroundColor = '#f5f5f5';
var path = new fabric.Path('M 0 20',{
left: 100,
top: 100,
stroke: 'black',
fill: ''
});
canvas.add(path);
var commandArray = [];
commandArray[0] = 'Q';
commandArray[1] = 50;
commandArray[2] = 100;
commandArray[3] = 100;
commandArray[4] = 20;
path.path[1] = commandArray;
canvas.renderAll();
console.log(path);
console.log(path.getBoundingRect());