小林博客找到主题模板根目录下的底部文件footer.php 在适当位置加入以下代码
ps：如果你使用的是宁静致远主题模板可以在后台→主题配置→广告设置把以下代码复制粘贴进去即可
<script src="//网址域名/xue.js" defer></script><div class="snow"><canvas id="snow"></canvas></div>
下一步到主机根目录创建个js文件，并命名为xue.js如图：
创建好了复制以下代码进去xue.js文件里面
js代码：
(function() {
var requestAnimationFrame = window.requestAnimationFrame || window.mozRequestAnimationFrame || window.webkitRequestAnimationFrame || window.msRequestAnimationFrame ||
function(callback) {
window.setTimeout(callback, 1000 / 60);
};
window.requestAnimationFrame = requestAnimationFrame;})();(function() {
var flakes = [],
canvas = document.getElementById("snow"), //画布ID，与上一步创建的画布对应
ctx = canvas.getContext("2d"),
flakeCount = 200, //雪花数量，数值越大雪花数量越多
mX = -100,
mY = -100;
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
function snow() {
ctx.clearRect(0, 0, canvas.width, canvas.height);
for (var i = 0; i < flakeCount; i++) {
var flake = flakes[i],
x = mX,
y = mY,
minDist = 150, //雪花距离鼠标指针的最小值，小于这个距离的雪花将受到鼠标的排斥
x2 = flake.x,
y2 = flake.y;
var dist = Math.sqrt((x2 - x) * (x2 - x) + (y2 - y) * (y2 - y)),
dx = x2 - x,
dy = y2 - y;
if (dist < minDist) {
var force = minDist / (dist * dist),
xcomp = (x - x2) / dist,
ycomp = (y - y2) / dist,
deltaV = force / 2;
flake.velX -= deltaV * xcomp;
flake.velY -= deltaV * ycomp;
} else {
flake.velX *= .98;
if (flake.velY <= flake.speed) {
flake.velY = flake.speed }
flake.velX += Math.cos(flake.step += .05) * flake.stepSize;
}
ctx.fillStyle = "rgba(255,255,255," + flake.opacity + ")"; //雪花颜色
flake.y += flake.velY;
flake.x += flake.velX;
if (flake.y >= canvas.height || flake.y <= 0) {
reset(flake);
}
if (flake.x >= canvas.width || flake.x <= 0) {
reset(flake);
}
ctx.beginPath();
ctx.arc(flake.x, flake.y, flake.size, 0, Math.PI * 2);
ctx.fill();
}
requestAnimationFrame(snow);
};
function reset(flake) {
flake.x = Math.floor(Math.random() * canvas.width);
flake.y = 0;
flake.size = (Math.random() * 3) + 3; //加号后面的值，雪花大小，为基准值，数值越大雪花越大
flake.speed = (Math.random() * 1) + 0.5; //加号后面的值，雪花速度，为基准值，数值越大雪花速度越快
flake.velY = flake.speed;
flake.velX = 0;
flake.opacity = (Math.random() * 0.5) + 0.3; //加号后面的值，为基准值，范围0~1
}
function init() {
for (var i = 0; i < flakeCount; i++) {
var x = Math.floor(Math.random() * canvas.width),
y = Math.floor(Math.random() * canvas.height),
size = (Math.random() * 3) + 3, //加号后面的值，雪花大小，为基准值，数值越大雪花越大
speed = (Math.random() * 1) + 0.5, //加号后面的值，雪花速度，为基准值，数值越大雪花速度越快
opacity = (Math.random() * 0.5) + 0.3; //加号后面的值，为基准值，范围0~1
flakes.push({
speed: speed,
velY: speed,
velX: 0,
x: x,
y: y,
size: size,
stepSize: (Math.random()) / 30 * 1, //乘号后面的值，雪花横移幅度，为基准值，数值越大雪花横移幅度越大，0为竖直下落
step: 0,
angle: 180,
opacity: opacity });
}
snow();
};
document.addEventListener("mousemove", function(e) {
mX = e.clientX,
mY = e.clientY });
window.addEventListener("resize", function() {
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
});
init();})();
下一步就是css代码，复制以下css代码到模板全局css文件里也可以放到footer.php里面，或其他主题设置自定
义css
css代码
.snow {
display: block;}#snow {
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
z-index: 9999;
pointer-events: none;}
然后在后台首页清除缓存即可
