canvas居中小游戏-html代码-BFW代码库

canvas居中小游戏

代码语言：html

所属分类：游戏

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开


<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">

<style>
@import url("https://fonts.googleapis.com/css?family=Cousine&display=swap");

* {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
}
body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='-50 -50 100 100' transform='rotate(45)' opacity='0.1' width='100' height='100'%3E%3Ccircle r='20' fill='hsl(128, 40%25, 45%25)' id='circle' /%3E%3Cg id='circles'%3E%3Cuse href='%23circle' y='30' opacity='0.3' /%3E%3Cuse href='%23circle' y='-30' opacity='0.3' /%3E%3C/g%3E%3Cuse href='%23circles' transform='rotate(90)' /%3E%3C/svg%3E"),
    hsl(0, 0%, 10%);
  background-size: 10px;
  color: hsl(30, 15%, 90%);
  font-family: "Cousine", monospace;
}
body > * + * {
  margin-top: 1.5rem;
}

button {
  display: block;
  color: inherit;
  font-family: inherit;
  color: inherit;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 1.25rem;
  font-weight: 700;
  padding: 0.75rem 1rem;
  border-radius: 5px;
  background: hsl(128, 40%, 45%);
  border: 4px solid hsl(128, 40%, 45%);
  outline: none;
}
button:focus {
  border-color: currentColor;
  box-shadow: 0 0 10px hsl(128, 40%, 45%);
}
</style>

</head>
<body translate="no">


<script>
// html
const { innerWidth, innerHeight } = window;
const size = Math.min(400, innerWidth * 0.9, innerHeight * 0.9);
const width = size;
const height = size;

const canvas = document.createElement('canvas');
canvas.width = width;
canvas.height = height;
document.body.appendChild(canvas);

const button = document.createElement('button');
button.textContent = 'Play';
document.body.appendChild(button);

// canvas
const context = canvas.getContext('2d');
context.translate(width / 2, height / 2);
const lineWidth = 15;
const radius = width / 2 - lineWidth / 2;
context.lineWidth = lineWidth;
context.fillStyle = 'hs.........完整代码请登录后点击上方下载按钮下载查看