我有一个简单的html页面：
<html>
<head>
<title></title>
<link rel="icon" type="image/vnd.microsoft.icon" href="images/icon.png" />
<link rel="stylesheet" type="text/css" href="style.css" />
</head>
<body bgcolor="ffffff"><br>
<img src="images/1.png" style="position:relative; left:4%; width:85%"></img>
<meta http-equiv="refresh" content="7; home.html" />
</body>
</html>
显示图像，7秒后重定向到主页。我在网上找到了一个很酷的五彩纸屑代码，我想在前台将它添加到这个页面，但我总能看到将来可以添加到页面的图像或文字，但我可以＆＃39;找到一种方法。五彩纸屑代码是这样的：
(function() {
var COLORS, Confetti, NUM_CONFETTI, PI_2, canvas, confetti, context, drawCircle, i, range, resizeWindow, xpos;
NUM_CONFETTI = 350;
COLORS = [[85, 71, 106], [174, 61, 99], [219, 56, 83], [244, 92, 68], [248, 182, 70]];
PI_2 = 2 * Math.PI;
canvas = document.getElementById("world");
context = canvas.getContext("2d");
window.w = 0;
window.h = 0;
resizeWindow = function() {
window.w = canvas.width = window.innerWidth;
return window.h = canvas.height = window.innerHeight;
};
window.addEventListener('resize', resizeWindow, false);
window.onload = function() {
return setTimeout(resizeWindow, 0);
};
range = function(a, b) {
return (b - a) * Math.random() + a;
};
drawCircle = function(x, y, r, style) {
context.beginPath();
context.arc(x, y, r, 0, PI_2, false);
context.fillStyle = style;
return context.fill();
};
xpos = 0.5;
document.onmousemove = function(e) {
return xpos = e.pageX / w;
};
window.requestAnimationFrame = (function() {
return window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || window.oRequestAnimationFrame || window.msRequestAnimationFrame || function(callback) {
return window.setTimeout(callback, 1000 / 60);
};
})();
Confetti = (function() {
function Confetti() {
this.style = COLORS[~~range(0, 5)];
this.rgb = "rgba(" + this.style[0] + "," + this.style[1] + "," + this.style[2];
this.r = ~~range(2, 6);
this.r2 = 2 * this.r;
this.replace();
}
Confetti.prototype.replace = function() {
this.opacity = 0;
this.dop = 0.03 * range(1, 4);
this.x = range(-this.r2, w - this.r2);
this.y = range(-20, h - this.r2);
this.xmax = w - this.r;
this.ymax = h - this.r;
this.vx = range(0, 2) + 8 * xpos - 5;
return this.vy = 0.7 * this.r + range(-1, 1);
};
Confetti.prototype.draw = function() {
var _ref;
this.x += this.vx;
this.y += this.vy;
this.opacity += this.dop;
if (this.opacity > 1) {
this.opacity = 1;
this.dop *= -1;
}
if (this.opacity < 0 || this.y > this.ymax) {
this.replace();
}
if (!((0 < (_ref = this.x) && _ref < this.xmax))) {
this.x = (this.x + this.xmax) % this.xmax;
}
return drawCircle(~~this.x, ~~this.y, this.r, "" + this.rgb + "," + this.opacity + ")");
};
return Confetti;
})();
confetti = (function() {
var _i, _results;
_results = [];
for (i = _i = 1; 1 <= NUM_CONFETTI ? _i <= NUM_CONFETTI : _i >= NUM_CONFETTI; i = 1 <= NUM_CONFETTI ? ++_i : --_i) {
_results.push(new Confetti);
}
return _results;
})();
window.step = function() {
var c, _i, _len, _results;
requestAnimationFrame(step);
context.clearRect(0, 0, w, h);
_results = [];
for (_i = 0, _len = confetti.length; _i < _len; _i++) {
c = confetti[_i];
_results.push(c.draw());
}
return _results;
};
step();
}).call(this);
关于如何在前台制作五彩纸屑动画但保持页面在后台完全正常运作的任何建议或想法？