Question

How to use arc() to draw a circle in JavaScript

Answer 1

<canvas id="canvas"></canvas>

var canvas = document.getElementById("canvas");
var ctx = canvas.getContext("2d");
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;

// void ctx.arc(x, y, radius, startAngle, endAngle, anticlockwise);

ctx.beginPath();
ctx.arc(100, 100, 70, 0, 2 * Math.PI);
ctx.stroke();

</script>

 

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