非常炫酷的网页样式特效
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<canvas id="evanyou" width="1920" height="934"></canvas> /*CSS代码:*/
<style type="text/css">
#evanyou {
position: fixed;
width: 100%;
height: 100%;
left: 0;
top: 0;
}
</style>
<script>
var c = document.getElementById(‘evanyou‘),
x = c.getContext(‘2d‘),
pr = window.devicePixelRatio || 1,
w = window.innerWidth,
h = window.innerHeight,
f = 90,
q, m = Math,
r = 0,
u = m.PI * 2,
v = m.cos,
z = m.random;
c.width = w * pr;
c.height = h * pr;
x.scale(pr, pr);
x.globalAlpha = 0.6;
function evanyou() {
x.clearRect(0, 0, w, h) q = [{
x: 0,
y: h * .7 + f
}, {
x: 0,
y: h * .7 - f
}]
while(q[1].x <
w + f) d(q[0], q[1])
}
function d(i, j) {
x.beginPath() x.moveTo(i.x, i.y) x.lineTo(j.x, j.y) var k = j.x + (z() * 2 - 0.25) * f,
n = y(j.y) x.lineTo(k, n) x.closePath() r -= u / -50 x.fillStyle = ‘#‘ + (v(r) * 127 + 128 << 16 | v(r + u / 3) * 127 + 128 << 8 | v(r + u / 3 * 2) * 127 + 128).toString(16) x.fill() q[0] = q[1] q[1] = {
x: k,
y: n
}
}
function y(p) {
var t = p + (z() * 2 - 1.1) * f
return(t > h || t <
0) ? y(p) : t
}
document.onclick = e vanyou document.ontouchstart = e vanyou evanyou();
</script>
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