the line width of innerbox remains same for the different values in main.js file
main.js
enter code here
function init(){
let ctx = document.querySelector('#canvas').getContext('2d');
ctx.strokeRect(100,50,200,150);
ctx.lineWidth = 100;
}
index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Drawing on the canvas</title>
<link rel="stylesheet" href="styles.css">
<script src="main.js"></script>
</head>
<body onload="init();">
<canvas id="canvas" width="400" height="300">Your browser doesn't support the
HTML5 element canvas.
</canvas>
</body>
</html>
You just need to switch the order of individual instructions
ctx.strokeRect(100,50,200,150);
ctx.lineWidth = 100;
to
ctx.lineWidth = 100;
ctx.strokeRect(100,50,200,150);