canvas蔚蓝星空效果
分类：实例代码
canvas蔚蓝星空效果属于前端实例代码，有关更多实例代码大家可以查看。
分享一段代码实例，它利用canvas实现了蔚蓝星空效果。
代码实例如下:
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta name="author" content="http://www.pipipi.net/" />
<title>前端教程网</title>
<style>
html, body {
margin: 0;
padding: 0;
width: 100%;
height: 100%;
overflow: hidden;
}
#starrynight {
background: -webkit-linear-gradient(#00111e 30%, #033d5e);
background: -moz-linear-gradient(#00111e 30%, #033d5e);
background: -o-linear-gradient(#00111e 30%, #033d5e);
background: linear-gradient(#00111e 30%, #033d5e);
overflow: hidden;
}
</style>
</head>
<body>
<canvas id="starrynight"></canvas>
<script>
function drawing() {
var c = document.getElementById('starrynight');
var ctx = c.getContext('2d');
var xMax = c.width = window.screen.availWidth;
var yMax = c.height = window.screen.availHeight;
var hmTimes = Math.round(xMax + yMax);
for (var i = 0; i <= hmTimes; i++) {
var randomX = Math.floor((Math.random() * xMax) + 1);
var randomY = Math.floor((Math.random() * yMax) + 1);
var randomSize = Math.floor((Math.random() * 2) + 1);
var randomOpacityOne = Math.floor((Math.random() * 9) + 1);
var randomOpacityTwo = Math.floor((Math.random() * 9) + 1);
var randomHue = Math.floor((Math.random() * 360) + 1);
if (randomSize > 1) {
ctx.shadowBlur = Math.floor((Math.random() * 15) + 5);
ctx.shadowColor = "white";
}
ctx.fillStyle = "hsla(" + randomHue + ", 30%, 80%, ." + randomOpacityOne + randomOpacityTwo + ")";
ctx.fillRect(randomX, randomY, randomSize, randomSize);
}
}
drawing();
</script>
</body>
</html>
canvas蔚蓝星空效果，这样的场景在实际项目中还是用的比较多的，关于canvas蔚蓝星空效果就介绍到这了。