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

多种网页雪花特效代码,含RiTheme主题官网雪花效果插图

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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