本特效代码基于JQuery,一般网站都会默认引入,如没有引入JQuery插件,可在网站公共底部文件(一般为footer.php)添加JQuery插件,引入代码如下
<script type="text/javascript" src="https://libs.baidu.com/jquery/1.8.3/jquery.js"></script>
<script type="text/javascript" src="https://libs.baidu.com/jquery/1.8.3/jquery.min.js"></script>
注:上述为CDN链接,可自行替换其他静态资源库链接,这里就不过多说明!
仿RiTheme主题官网雪花特效
这个雪花特效是复制RiTheme主题官网的代码,可查看查看演示和在线调试,其他演示效果 请自行测试底部分享的代码查看。
- 在网页“</body>”标签前添加如下代码
RiTheme主题官网版代码:
<script src="https://unpkg.com/magic-snowflakes/dist/snowflakes.min.js"></script> <script> var sf = new Snowflakes({ color: "#cccccc"//控制雪花颜色 }); </script>
控制说明:
color: "#ffadc6",//控制雪花颜色
count: 80,//控制雪花数量
rotation: false,//控制雪花下落是否旋转
wind: false,//模拟风吹(控制雪花下落)
minSize: 6,//控制雪花最小尺寸
maxSize: 12//控制雪花最大尺寸
注意:日主题可在:“主题设置”→“底部设置”→“网站底部自定义JS代码”添加上面的代码
其他效果
其他雪花效果代码,各种参数均可自定义,添加方法和RiTheme主题官网雪花特效代码添加方式一样,同样需要JQuery插件!
雪花特效代码1
<script type="text/javascript">
(function($){
$.fn.snow = function(options){
var $flake = $('<div id="snowbox" />').css({'position': 'absolute','z-index':'9999', 'top': '-50px', 'cursor': 'pointer'}).html('❄'),
documentHeight = $(document).height(),
documentWidth = $(document).width(),
defaults = {
minSize : 10,
maxSize : 20,
newOn : 1000,
flakeColor : "#AFDAEF" /* 此处可以定义雪花颜色,若要白色可以改为#FFFFFF */
},
options = $.extend({}, defaults, options);
var interval= setInterval( function(){
var startPositionLeft = Math.random() * documentWidth - 100,
startOpacity = 0.5 + Math.random(),
sizeFlake = options.minSize + Math.random() * options.maxSize,
endPositionTop = documentHeight - 200,
endPositionLeft = startPositionLeft - 500 + Math.random() * 500,
durationFall = documentHeight * 10 + Math.random() * 5000;
$flake.clone().appendTo('body').css({
left: startPositionLeft,
opacity: startOpacity,
'font-size': sizeFlake,
color: options.flakeColor
}).animate({
top: endPositionTop,
left: endPositionLeft,
opacity: 0.2
},durationFall,'linear',function(){
$(this).remove()
});
}, options.newOn);
};
})(jQuery);
$(function(){
$.fn.snow({
minSize: 5, /* 定义雪花最小尺寸 */
maxSize: 50,/* 定义雪花最大尺寸 */
newOn: 300 /* 定义密集程度,数字越小越密集 */
});
});
</script>
雪花特效代码2
<script type="text/javascript">
/* 控制下雪 */
function snowFall(snow) {
/* 可配置属性 */
snow = snow || {};
this.maxFlake = snow.maxFlake || 200; /* 最多片数 */
this.flakeSize = snow.flakeSize || 10; /* 雪花形状 */
this.fallSpeed = snow.fallSpeed || 1; /* 坠落速度 */
}
/* 兼容写法 */
requestAnimationFrame = window.requestAnimationFrame ||
window.mozRequestAnimationFrame ||
window.webkitRequestAnimationFrame ||
window.msRequestAnimationFrame ||
window.oRequestAnimationFrame ||
function(callback) { setTimeout(callback, 1000 / 60); };
cancelAnimationFrame = window.cancelAnimationFrame ||
window.mozCancelAnimationFrame ||
window.webkitCancelAnimationFrame ||
window.msCancelAnimationFrame ||
window.oCancelAnimationFrame;
/* 开始下雪 */
snowFall.prototype.start = function(){
/* 创建画布 */
snowCanvas.apply(this);
/* 创建雪花形状 */
createFlakes.apply(this);
/* 画雪 */
drawSnow.apply(this)
}
/* 创建画布 */
function snowCanvas() {
/* 添加Dom结点 */
var snowcanvas = document.createElement("canvas");
snowcanvas.id = "snowfall";
snowcanvas.width = window.innerWidth;
snowcanvas.height = document.body.clientHeight;
snowcanvas.setAttribute("style", "position:absolute; top: 0; left: 0; z-index: 1; pointer-events: none;");
document.getElementsByTagName("body")[0].appendChild(snowcanvas);
this.canvas = snowcanvas;
this.ctx = snowcanvas.getContext("2d");
/* 窗口大小改变的处理 */
window.onresize = function() {
snowcanvas.width = window.innerWidth;
/* snowcanvas.height = window.innerHeight */
}
}
/* 雪运动对象 */
function flakeMove(canvasWidth, canvasHeight, flakeSize, fallSpeed) {
this.x = Math.floor(Math.random() * canvasWidth); /* x坐标 */
this.y = Math.floor(Math.random() * canvasHeight); /* y坐标 */
this.size = Math.random() * flakeSize + 2; /* 形状 */
this.maxSize = flakeSize; /* 最大形状 */
this.speed = Math.random() * 1 + fallSpeed; /* 坠落速度 */
this.fallSpeed = fallSpeed; /* 坠落速度 */
this.velY = this.speed; /* Y方向速度 */
this.velX = 0; /* X方向速度 */
this.stepSize = Math.random() / 30; /* 步长 */
this.step = 0 /* 步数 */
}
flakeMove.prototype.update = function() {
var x = this.x,
y = this.y;
/* 左右摆动(余弦) */
this.velX *= 0.98;
if (this.velY <= this.speed) { this.velY = this.speed } this.velX += Math.cos(this.step += .05) * this.stepSize; this.y += this.velY; this.x += this.velX; /* 飞出边界的处理 */ if (this.x >= canvas.width || this.x <= 0 || this.y >= canvas.height || this.y <= 0) {
this.reset(canvas.width, canvas.height)
}
};
/* 飞出边界-放置最顶端继续坠落 */
flakeMove.prototype.reset = function(width, height) {
this.x = Math.floor(Math.random() * width);
this.y = 0;
this.size = Math.random() * this.maxSize + 2;
this.speed = Math.random() * 1 + this.fallSpeed;
this.velY = this.speed;
this.velX = 0;
};
// 渲染雪花-随机形状(此处可修改雪花颜色!!!)
flakeMove.prototype.render = function(ctx) {
var snowFlake = ctx.createRadialGradient(this.x, this.y, 0, this.x, this.y, this.size);
snowFlake.addColorStop(0, "rgba(255, 255, 255, 0.9)"); /* 此处是雪花颜色,默认是白色 */
snowFlake.addColorStop(.5, "rgba(255, 255, 255, 0.5)"); /* 若要改为其他颜色,请自行查 */
snowFlake.addColorStop(1, "rgba(255, 255, 255, 0)"); /* 找16进制的RGB 颜色代码。 */
ctx.save();
ctx.fillStyle = snowFlake;
ctx.beginPath();
ctx.arc(this.x, this.y, this.size, 0, Math.PI * 2);
ctx.fill();
ctx.restore();
};
/* 创建雪花-定义形状 */
function createFlakes() {
var maxFlake = this.maxFlake,
flakes = this.flakes = [],
canvas = this.canvas;
for (var i = 0; i < maxFlake; i++) {
flakes.push(new flakeMove(canvas.width, canvas.height, this.flakeSize, this.fallSpeed))
}
}
/* 画雪 */
function drawSnow() {
var maxFlake = this.maxFlake,
flakes = this.flakes;
ctx = this.ctx, canvas = this.canvas, that = this;
/* 清空雪花 */
ctx.clearRect(0, 0, canvas.width, canvas.height);
for (var e = 0; e < maxFlake; e++) {
flakes[e].update();
flakes[e].render(ctx);
}
/* 一帧一帧的画 */
this.loop = requestAnimationFrame(function() {
drawSnow.apply(that);
});
}
/* 调用及控制方法 */
var snow = new snowFall({maxFlake:60});
snow.start();
</script>
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