canvas绘制表情包的示例代码

var canvas = document.getElementById('canvas');var context = canvas.getContext('2d');// 画脸,设置脸的填充颜色为 '#fff'context.fillStyle = '#fff';context.beginPath();context.arc(150, 150, 60, 0, Math.PI*2);context.closePath();context.fill();// 画眼睛,设置眼睛的填充颜色为 'rgb(0, 0, 0)'context.fillStyle = 'rgb(0, 0, 0)';context.beginPath();context.arc(130, 130, 8, 0, Math.PI*2);context.closePath();context.fill();context.fillStyle = 'rgb(0, 0, 0)';context.beginPath();context.arc(170, 130, 8, 0, Math.PI*2);context.closePath();context.fill();// 画嘴巴,设置嘴巴的填充颜色为 'rgba(255, 0, 0, 0.8)'context.fillStyle = 'rgba(255, 0, 0, 0.8)';context.beginPath();context.arc(150, 160, 25, Math.PI, Math.PI*2, true);context.closePath();context.fill();// 画腮红,设置腮红线条颜色为 'pink',线条宽度为 5context.beginPath();context.moveTo(95, 152);context.lineTo(110, 150);context.moveTo(190, 150);context.lineTo(205, 152);context.closePath();context.lineWidth = 5;context.strokeStyle = 'pink';context.stroke();

var canvas = document.getElementById('canvas');var context = canvas.getContext('2d');var image = new Image();image.src= 'https://ke.qq.com/classroom/assets/lib/img/canvas-expression-base.png';image.onload = function(){  context.drawImage(image, 50, 110, 200, 200);}context.font = '30px arial';context.fillText('今天的我', 20, 50);context.font = '40px arial';context.fillText('还是一样的帅！', 20, 90);