JSFiddle - React, Tailwind, and code Playground

HTML

<canvas id="canvas1" width="500" height="500"></canvas>http://jsfiddle.net/9bMPD/http://jsfiddle.net/9bMPD/

JavaScript

var can = document.getElementById('canvas1');
var ctx = can.getContext('2d');


// linear gradient from start to end of line
var grad= ctx.createLinearGradient(50, 150, 150, 150);
grad.addColorStop(0, "red");
grad.addColorStop(1, "green");

ctx.strokeStyle = grad;

ctx.beginPath();
ctx.lineWidth = 1;
ctx.moveTo(50.5,150.5);
ctx.lineTo(150.5,150.5);

ctx.stroke();