画图求像的位置

gaohaikuo1

<canvas width="300" height="300" id="canvas"/><javascript>const canvas = document.querySelector('#canvas');
if (canvas.getContext) {  const ctx = canvas.getContext('2d');    // 设置线条宽度  ctx.lineWidth = 3;  // 门  ctx.fillStyle = 'rgb(159, 99, 71)';  ctx.fillRect(130, 190, 40, 60);  ctx.beginPath();  ctx.arc(140, 220, 3, 0, 2 * Math.PI);  ctx.fillStyle = 'black';  ctx.fill();  ctx.closePath();}</javascript>

gaohaikuo1

const canvas = document.querySelector('#canvas');if (canvas.getContext) {const context = canvas.getContext('2d'); context.beginPath();context.moveTo(10, 10);context.lineTo(20, 20);context.closePath();context.stroke();/JavaScript>“