Подборка снежинок, метели, пурги для сайта на Новый год

Всем здравия друзья! Близится, близится Новый год! А какой же новый год без украшений, подарков, снега? Вот и я так же подумал и решил  собрать для Вас подборку  сниппетов  для украшения вашего веб-проекта  к новогодним праздникам. Подборка состоит из различных скриптов  снега, снежинок, метелей для украшения сайта. И так давайте приступим, возможно, что то уже было выложено, а что то может и новое. Надеюсь Вы найдёте для себя именно тот самый скрипт снежинок! Кстати пробегитесь по тегам к посту и можно найти ещё кучу разных новогодних сниппетов, таких как снеговики, гирлянды, целых новогодних секций, Клаусов И Дедов морозов!

Снежинки для сайта на чистом CSS без использования скриптов

Простая  анимация для сайта на Новый год в виде снежинок. Снежинки можно по желанию настроить под свои нужды и украсить сайт к зимним праздникам. Снежинки построены на CSS без использования скриптов.

HTML

<div class="snowflakes" aria-hidden="true">
  <div class="snowflake">
  ❅
  </div>
  <div class="snowflake">
  ❅
  </div>
  <div class="snowflake">
  ❆
  </div>
  <div class="snowflake">
  ❄
  </div>
  <div class="snowflake">
  ❅
  </div>
  <div class="snowflake">
  ❆
  </div>
  <div class="snowflake">
  ❄
  </div>
  <div class="snowflake">
  ❅
  </div>
  <div class="snowflake">
  ❆
  </div>
  <div class="snowflake">
  ❄
  </div>
</div>

CSS

body {
    background: black 
}
/* customizable snowflake styling */
.snowflake {
  color: #fff;
  font-size: 1em;
  font-family: Arial;
  text-shadow: 0 0 1px #000;
}

@-webkit-keyframes snowflakes-fall{0%{top:-10%}100%{top:100%}}@-webkit-keyframes snowflakes-shake{0%{-webkit-transform:translateX(0px);transform:translateX(0px)}50%{-webkit-transform:translateX(80px);transform:translateX(80px)}100%{-webkit-transform:translateX(0px);transform:translateX(0px)}}@keyframes snowflakes-fall{0%{top:-10%}100%{top:100%}}@keyframes snowflakes-shake{0%{transform:translateX(0px)}50%{transform:translateX(80px)}100%{transform:translateX(0px)}}.snowflake{position:fixed;top:-10%;z-index:9999;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;cursor:default;-webkit-animation-name:snowflakes-fall,snowflakes-shake;-webkit-animation-duration:10s,3s;-webkit-animation-timing-function:linear,ease-in-out;-webkit-animation-iteration-count:infinite,infinite;-webkit-animation-play-state:running,running;animation-name:snowflakes-fall,snowflakes-shake;animation-duration:10s,3s;animation-timing-function:linear,ease-in-out;animation-iteration-count:infinite,infinite;animation-play-state:running,running}.snowflake:nth-of-type(0){left:1%;-webkit-animation-delay:0s,0s;animation-delay:0s,0s}.snowflake:nth-of-type(1){left:10%;-webkit-animation-delay:1s,1s;animation-delay:1s,1s}.snowflake:nth-of-type(2){left:20%;-webkit-animation-delay:6s,.5s;animation-delay:6s,.5s}.snowflake:nth-of-type(3){left:30%;-webkit-animation-delay:4s,2s;animation-delay:4s,2s}.snowflake:nth-of-type(4){left:40%;-webkit-animation-delay:2s,2s;animation-delay:2s,2s}.snowflake:nth-of-type(5){left:50%;-webkit-animation-delay:8s,3s;animation-delay:8s,3s}.snowflake:nth-of-type(6){left:60%;-webkit-animation-delay:6s,2s;animation-delay:6s,2s}.snowflake:nth-of-type(7){left:70%;-webkit-animation-delay:2.5s,1s;animation-delay:2.5s,1s}.snowflake:nth-of-type(8){left:80%;-webkit-animation-delay:1s,0s;animation-delay:1s,0s}.snowflake:nth-of-type(9){left:90%;-webkit-animation-delay:3s,1.5s;animation-delay:3s,1.5s}
/* Demo Purpose Only*/
.demo {
  font-family: 'Raleway', sans-serif;
  color:#555f;
    display: block;
    margin: 0 auto;
    padding: 15px 0;
    text-align: center;
}
.demo a{
  font-family: 'Raleway', sans-serif;
color: #000;    
}

Снег для сайта с использованием JS который собирается в подвале сайта и тает

Еще один вариант падающего снега на сайт. В данном скрипте снег собирается в подвале сайте в виде если можно так сказать сугробов, а затем тает. 

HTML

<canvas class="snow"></canvas>

CSS

body {
  background:#000000;
}

JS

var snowStorm = (function(window, document) {
 this.autoStart = true; 
  this.excludeMobile = true; 
  this.flakesMax = 128;
  this.flakesMaxActive = 64; 
  this.animationInterval = 50; 
  this.useGPU = true; 
  this.className = null; 
  this.excludeMobile = true; 
  this.flakeBottom = null; 
  this.followMouse = false; 
  this.snowColor = '#fff';        // Don't eat (or use?) yellow snow.
  this.snowCharacter = '•';  // • = bullet, · is square on some systems etc.
  this.snowStick = true;          // Whether or not snow should "stick" at the bottom. When off, will never collect.
  this.targetElement = null;      // element which snow will be appended to (null = document.body) - can be an element ID eg. 'myDiv', or a DOM node reference
  this.useMeltEffect = true;      // When recycling fallen snow (or rarely, when falling), have it "melt" and fade out if browser supports it
  this.useTwinkleEffect = false;  // Allow snow to randomly "flicker" in and out of view while falling
  this.usePositionFixed = false;  // true = snow does not shift vertically when scrolling. May increase CPU load, disabled by default - if enabled, used only where supported
  this.usePixelPosition = false;  // Whether to use pixel values for snow top/left vs. percentages. Auto-enabled if body is position:relative or targetElement is specified.

  // --- less-used bits ---

  this.freezeonblur = true;       // Only snow when the window is in focus (foreground.) Saves CPU.
  this.flakeLeftOffset = 0;       // Left margin/gutter space on edge of container (eg. browser window.) Bump up these values if seeing horizontal scrollbars.
  this.flakeRightOffset = 0;      // Right margin/gutter space on edge of container
  this.flakeWidth = 8;            // Max pixel width reserved for snow element
  this.flakeHeight = 8;           // Max pixel height reserved for snow element
  this.vMaxX = 5;                 // Maximum X velocity range for snow
  this.vMaxY = 4;                 // Maximum Y velocity range for snow
  this.zIndex = 0;                // CSS stacking order applied to each snowflake

  // --- "No user-serviceable parts inside" past this point, yadda yadda ---

  var storm = this,
  features,
  // UA sniffing and backCompat rendering mode checks for fixed position, etc.
  isIE = navigator.userAgent.match(/msie/i),
  isIE6 = navigator.userAgent.match(/msie 6/i),
  isMobile = navigator.userAgent.match(/mobile|opera m(ob|in)/i),
  isBackCompatIE = (isIE && document.compatMode === 'BackCompat'),
  noFixed = (isBackCompatIE || isIE6),
  screenX = null, screenX2 = null, screenY = null, scrollY = null, docHeight = null, vRndX = null, vRndY = null,
  windOffset = 1,
  windMultiplier = 2,
  flakeTypes = 6,
  fixedForEverything = false,
  targetElementIsRelative = false,
  opacitySupported = (function(){
    try {
      document.createElement('div').style.opacity = '0.5';
    } catch(e) {
      return false;
    }
    return true;
  }()),
  didInit = false,
  docFrag = document.createDocumentFragment();

  features = (function() {

    var getAnimationFrame;

    /**
     * hat tip: paul irish
     * http://paulirish.com/2011/requestanimationframe-for-smart-animating/
     * https://gist.github.com/838785
     */

    function timeoutShim(callback) {
      window.setTimeout(callback, 1000/(storm.animationInterval || 20));
    }

    var _animationFrame = (window.requestAnimationFrame ||
        window.webkitRequestAnimationFrame ||
        window.mozRequestAnimationFrame ||
        window.oRequestAnimationFrame ||
        window.msRequestAnimationFrame ||
        timeoutShim);

    // apply to window, avoid "illegal invocation" errors in Chrome
    getAnimationFrame = _animationFrame ? function() {
      return _animationFrame.apply(window, arguments);
    } : null;

    var testDiv;

    testDiv = document.createElement('div');

    function has(prop) {

      // test for feature support
      var result = testDiv.style[prop];
      return (result !== undefined ? prop : null);

    }

    // note local scope.
    var localFeatures = {

      transform: {
        ie:  has('-ms-transform'),
        moz: has('MozTransform'),
        opera: has('OTransform'),
        webkit: has('webkitTransform'),
        w3: has('transform'),
        prop: null // the normalized property value
      },

      getAnimationFrame: getAnimationFrame

    };

    localFeatures.transform.prop = (
      localFeatures.transform.w3 || 
      localFeatures.transform.moz ||
      localFeatures.transform.webkit ||
      localFeatures.transform.ie ||
      localFeatures.transform.opera
    );

    testDiv = null;

    return localFeatures;

  }());

  this.timer = null;
  this.flakes = [];
  this.disabled = false;
  this.active = false;
  this.meltFrameCount = 20;
  this.meltFrames = [];

  this.setXY = function(o, x, y) {

    if (!o) {
      return false;
    }

    if (storm.usePixelPosition || targetElementIsRelative) {

      o.style.left = (x - storm.flakeWidth) + 'px';
      o.style.top = (y - storm.flakeHeight) + 'px';

    } else if (noFixed) {

      o.style.right = (100-(x/screenX*100)) + '%';
      // avoid creating vertical scrollbars
      o.style.top = (Math.min(y, docHeight-storm.flakeHeight)) + 'px';

    } else {

      if (!storm.flakeBottom) {

        // if not using a fixed bottom coordinate...
        o.style.right = (100-(x/screenX*100)) + '%';
        o.style.bottom = (100-(y/screenY*100)) + '%';

      } else {

        // absolute top.
        o.style.right = (100-(x/screenX*100)) + '%';
        o.style.top = (Math.min(y, docHeight-storm.flakeHeight)) + 'px';

      }

    }

  };

  this.events = (function() {

    var old = (!window.addEventListener && window.attachEvent), slice = Array.prototype.slice,
    evt = {
      add: (old?'attachEvent':'addEventListener'),
      remove: (old?'detachEvent':'removeEventListener')
    };

    function getArgs(oArgs) {
      var args = slice.call(oArgs), len = args.length;
      if (old) {
        args[1] = 'on' + args[1]; // prefix
        if (len > 3) {
          args.pop(); // no capture
        }
      } else if (len === 3) {
        args.push(false);
      }
      return args;
    }

    function apply(args, sType) {
      var element = args.shift(),
          method = [evt[sType]];
      if (old) {
        element[method](args[0], args[1]);
      } else {
        element[method].apply(element, args);
      }
    }

    function addEvent() {
      apply(getArgs(arguments), 'add');
    }

    function removeEvent() {
      apply(getArgs(arguments), 'remove');
    }

    return {
      add: addEvent,
      remove: removeEvent
    };

  }());

  function rnd(n,min) {
    if (isNaN(min)) {
      min = 0;
    }
    return (Math.random()*n)+min;
  }

  function plusMinus(n) {
    return (parseInt(rnd(2),10)===1?n*-1:n);
  }

  this.randomizeWind = function() {
    var i;
    vRndX = plusMinus(rnd(storm.vMaxX,0.2));
    vRndY = rnd(storm.vMaxY,0.2);
    if (this.flakes) {
      for (i=0; i<this.flakes.length; i++) {
        if (this.flakes[i].active) {
          this.flakes[i].setVelocities();
        }
      }
    }
  };

  this.scrollHandler = function() {
    var i;
    // "attach" snowflakes to bottom of window if no absolute bottom value was given
    scrollY = (storm.flakeBottom ? 0 : parseInt(window.scrollY || document.documentElement.scrollTop || (noFixed ? document.body.scrollTop : 0), 10));
    if (isNaN(scrollY)) {
      scrollY = 0; // Netscape 6 scroll fix
    }
    if (!fixedForEverything && !storm.flakeBottom && storm.flakes) {
      for (i=0; i<storm.flakes.length; i++) {
        if (storm.flakes[i].active === 0) {
          storm.flakes[i].stick();
        }
      }
    }
  };

  this.resizeHandler = function() {
    if (window.innerWidth || window.innerHeight) {
      screenX = window.innerWidth - 16 - storm.flakeRightOffset;
      screenY = (storm.flakeBottom || window.innerHeight);
    } else {
      screenX = (document.documentElement.clientWidth || document.body.clientWidth || document.body.scrollWidth) - (!isIE ? 8 : 0) - storm.flakeRightOffset;
      screenY = storm.flakeBottom || document.documentElement.clientHeight || document.body.clientHeight || document.body.scrollHeight;
    }
    docHeight = document.body.offsetHeight;
    screenX2 = parseInt(screenX/2,10);
  };

  this.resizeHandlerAlt = function() {
    screenX = storm.targetElement.offsetWidth - storm.flakeRightOffset;
    screenY = storm.flakeBottom || storm.targetElement.offsetHeight;
    screenX2 = parseInt(screenX/2,10);
    docHeight = document.body.offsetHeight;
  };

  this.freeze = function() {
    // pause animation
    if (!storm.disabled) {
      storm.disabled = 1;
    } else {
      return false;
    }
    storm.timer = null;
  };

  this.resume = function() {
    if (storm.disabled) {
       storm.disabled = 0;
    } else {
      return false;
    }
    storm.timerInit();
  };

  this.toggleSnow = function() {
    if (!storm.flakes.length) {
      // first run
      storm.start();
    } else {
      storm.active = !storm.active;
      if (storm.active) {
        storm.show();
        storm.resume();
      } else {
        storm.stop();
        storm.freeze();
      }
    }
  };

  this.stop = function() {
    var i;
    this.freeze();
    for (i=0; i<this.flakes.length; i++) {
      this.flakes[i].o.style.display = 'none';
    }
    storm.events.remove(window,'scroll',storm.scrollHandler);
    storm.events.remove(window,'resize',storm.resizeHandler);
    if (storm.freezeonblur) {
      if (isIE) {
        storm.events.remove(document,'focusout',storm.freeze);
        storm.events.remove(document,'focusin',storm.resume);
      } else {
        storm.events.remove(window,'blur',storm.freeze);
        storm.events.remove(window,'focus',storm.resume);
      }
    }
  };

  this.show = function() {
    var i;
    for (i=0; i<this.flakes.length; i++) {
      this.flakes[i].o.style.display = 'block';
    }
  };

  this.SnowFlake = function(type,x,y) {
    var s = this;
    this.type = type;
    this.x = x||parseInt(rnd(screenX-20),10);
    this.y = (!isNaN(y)?y:-rnd(screenY)-12);
    this.vX = null;
    this.vY = null;
    this.vAmpTypes = [1,1.2,1.4,1.6,1.8]; // "amplification" for vX/vY (based on flake size/type)
    this.vAmp = this.vAmpTypes[this.type] || 1;
    this.melting = false;
    this.meltFrameCount = storm.meltFrameCount;
    this.meltFrames = storm.meltFrames;
    this.meltFrame = 0;
    this.twinkleFrame = 0;
    this.active = 1;
    this.fontSize = (10+(this.type/5)*10);
    this.o = document.createElement('div');
    this.o.innerHTML = storm.snowCharacter;
    if (storm.className) {
      this.o.setAttribute('class', storm.className);
    }
    this.o.style.color = storm.snowColor;
    this.o.style.position = (fixedForEverything?'fixed':'absolute');
    if (storm.useGPU && features.transform.prop) {
      // GPU-accelerated snow.
      this.o.style[features.transform.prop] = 'translate3d(0px, 0px, 0px)';
    }
    this.o.style.width = storm.flakeWidth+'px';
    this.o.style.height = storm.flakeHeight+'px';
    this.o.style.fontFamily = 'arial,verdana';
    this.o.style.cursor = 'default';
    this.o.style.overflow = 'hidden';
    this.o.style.fontWeight = 'normal';
    this.o.style.zIndex = storm.zIndex;
    docFrag.appendChild(this.o);

    this.refresh = function() {
      if (isNaN(s.x) || isNaN(s.y)) {
        // safety check
        return false;
      }
      storm.setXY(s.o, s.x, s.y);
    };

    this.stick = function() {
      if (noFixed || (storm.targetElement !== document.documentElement && storm.targetElement !== document.body)) {
        s.o.style.top = (screenY+scrollY-storm.flakeHeight)+'px';
      } else if (storm.flakeBottom) {
        s.o.style.top = storm.flakeBottom+'px';
      } else {
        s.o.style.display = 'none';
        s.o.style.bottom = '0%';
        s.o.style.position = 'fixed';
        s.o.style.display = 'block';
      }
    };

    this.vCheck = function() {
      if (s.vX>=0 && s.vX<0.2) {
        s.vX = 0.2;
      } else if (s.vX<0 && s.vX>-0.2) {
        s.vX = -0.2;
      }
      if (s.vY>=0 && s.vY<0.2) {
        s.vY = 0.2;
      }
    };

    this.move = function() {
      var vX = s.vX*windOffset, yDiff;
      s.x += vX;
      s.y += (s.vY*s.vAmp);
      if (s.x >= screenX || screenX-s.x < storm.flakeWidth) { // X-axis scroll check
        s.x = 0;
      } else if (vX < 0 && s.x-storm.flakeLeftOffset < -storm.flakeWidth) {
        s.x = screenX-storm.flakeWidth-1; // flakeWidth;
      }
      s.refresh();
      yDiff = screenY+scrollY-s.y+storm.flakeHeight;
      if (yDiff<storm.flakeHeight) {
        s.active = 0;
        if (storm.snowStick) {
          s.stick();
        } else {
          s.recycle();
        }
      } else {
        if (storm.useMeltEffect && s.active && s.type < 3 && !s.melting && Math.random()>0.998) {
          // ~1/1000 chance of melting mid-air, with each frame
          s.melting = true;
          s.melt();
          // only incrementally melt one frame
          // s.melting = false;
        }
        if (storm.useTwinkleEffect) {
          if (s.twinkleFrame < 0) {
            if (Math.random() > 0.97) {
              s.twinkleFrame = parseInt(Math.random() * 8, 10);
            }
          } else {
            s.twinkleFrame--;
            if (!opacitySupported) {
              s.o.style.visibility = (s.twinkleFrame && s.twinkleFrame % 2 === 0 ? 'hidden' : 'visible');
            } else {
              s.o.style.opacity = (s.twinkleFrame && s.twinkleFrame % 2 === 0 ? 0 : 1);
            }
          }
        }
      }
    };

    this.animate = function() {
      // main animation loop
      // move, check status, die etc.
      s.move();
    };

    this.setVelocities = function() {
      s.vX = vRndX+rnd(storm.vMaxX*0.12,0.1);
      s.vY = vRndY+rnd(storm.vMaxY*0.12,0.1);
    };

    this.setOpacity = function(o,opacity) {
      if (!opacitySupported) {
        return false;
      }
      o.style.opacity = opacity;
    };

    this.melt = function() {
      if (!storm.useMeltEffect || !s.melting) {
        s.recycle();
      } else {
        if (s.meltFrame < s.meltFrameCount) {
          s.setOpacity(s.o,s.meltFrames[s.meltFrame]);
          s.o.style.fontSize = s.fontSize-(s.fontSize*(s.meltFrame/s.meltFrameCount))+'px';
          s.o.style.lineHeight = storm.flakeHeight+2+(storm.flakeHeight*0.75*(s.meltFrame/s.meltFrameCount))+'px';
          s.meltFrame++;
        } else {
          s.recycle();
        }
      }
    };

    this.recycle = function() {
      s.o.style.display = 'none';
      s.o.style.position = (fixedForEverything?'fixed':'absolute');
      s.o.style.bottom = 'auto';
      s.setVelocities();
      s.vCheck();
      s.meltFrame = 0;
      s.melting = false;
      s.setOpacity(s.o,1);
      s.o.style.padding = '0px';
      s.o.style.margin = '0px';
      s.o.style.fontSize = s.fontSize+'px';
      s.o.style.lineHeight = (storm.flakeHeight+2)+'px';
      s.o.style.textAlign = 'center';
      s.o.style.verticalAlign = 'baseline';
      s.x = parseInt(rnd(screenX-storm.flakeWidth-20),10);
      s.y = parseInt(rnd(screenY)*-1,10)-storm.flakeHeight;
      s.refresh();
      s.o.style.display = 'block';
      s.active = 1;
    };

    this.recycle(); // set up x/y coords etc.
    this.refresh();

  };

  this.snow = function() {
    var active = 0, flake = null, i, j;
    for (i=0, j=storm.flakes.length; i<j; i++) {
      if (storm.flakes[i].active === 1) {
        storm.flakes[i].move();
        active++;
      }
      if (storm.flakes[i].melting) {
        storm.flakes[i].melt();
      }
    }
    if (active<storm.flakesMaxActive) {
      flake = storm.flakes[parseInt(rnd(storm.flakes.length),10)];
      if (flake.active === 0) {
        flake.melting = true;
      }
    }
    if (storm.timer) {
      features.getAnimationFrame(storm.snow);
    }
  };

  this.mouseMove = function(e) {
    if (!storm.followMouse) {
      return true;
    }
    var x = parseInt(e.clientX,10);
    if (x<screenX2) {
      windOffset = -windMultiplier+(x/screenX2*windMultiplier);
    } else {
      x -= screenX2;
      windOffset = (x/screenX2)*windMultiplier;
    }
  };

  this.createSnow = function(limit,allowInactive) {
    var i;
    for (i=0; i<limit; i++) {
      storm.flakes[storm.flakes.length] = new storm.SnowFlake(parseInt(rnd(flakeTypes),10));
      if (allowInactive || i>storm.flakesMaxActive) {
        storm.flakes[storm.flakes.length-1].active = -1;
      }
    }
    storm.targetElement.appendChild(docFrag);
  };

  this.timerInit = function() {
    storm.timer = true;
    storm.snow();
  };

  this.init = function() {
    var i;
    for (i=0; i<storm.meltFrameCount; i++) {
      storm.meltFrames.push(1-(i/storm.meltFrameCount));
    }
    storm.randomizeWind();
    storm.createSnow(storm.flakesMax); // create initial batch
    storm.events.add(window,'resize',storm.resizeHandler);
    storm.events.add(window,'scroll',storm.scrollHandler);
    if (storm.freezeonblur) {
      if (isIE) {
        storm.events.add(document,'focusout',storm.freeze);
        storm.events.add(document,'focusin',storm.resume);
      } else {
        storm.events.add(window,'blur',storm.freeze);
        storm.events.add(window,'focus',storm.resume);
      }
    }
    storm.resizeHandler();
    storm.scrollHandler();
    if (storm.followMouse) {
      storm.events.add(isIE?document:window,'mousemove',storm.mouseMove);
    }
    storm.animationInterval = Math.max(20,storm.animationInterval);
    storm.timerInit();
  };

  this.start = function(bFromonload) {
    if (!didInit) {
      didInit = true;
    } else if (bFromonload) {
      // already loaded and running
      return true;
    }
    if (typeof storm.targetElement === 'string') {
      var targetID = storm.targetElement;
      storm.targetElement = document.getElementById(targetID);
      if (!storm.targetElement) {
        throw new Error('Snowstorm: Unable to get targetElement "'+targetID+'"');
      }
    }
    if (!storm.targetElement) {
      storm.targetElement = (document.body || document.documentElement);
    }
    if (storm.targetElement !== document.documentElement && storm.targetElement !== document.body) {
      // re-map handler to get element instead of screen dimensions
      storm.resizeHandler = storm.resizeHandlerAlt;
      //and force-enable pixel positioning
      storm.usePixelPosition = true;
    }
    storm.resizeHandler(); // get bounding box elements
    storm.usePositionFixed = (storm.usePositionFixed && !noFixed && !storm.flakeBottom); // whether or not position:fixed is to be used
    if (window.getComputedStyle) {
      // attempt to determine if body or user-specified snow parent element is relatlively-positioned.
      try {
        targetElementIsRelative = (window.getComputedStyle(storm.targetElement, null).getPropertyValue('position') === 'relative');
      } catch(e) {
        // oh well
        targetElementIsRelative = false;
      }
    }
    fixedForEverything = storm.usePositionFixed;
    if (screenX && screenY && !storm.disabled) {
      storm.init();
      storm.active = true;
    }
  };

  function doDelayedStart() {
    window.setTimeout(function() {
      storm.start(true);
    }, 20);
    // event cleanup
    storm.events.remove(isIE?document:window,'mousemove',doDelayedStart);
  }

  function doStart() {
    if (!storm.excludeMobile || !isMobile) {
      doDelayedStart();
    }
    // event cleanup
    storm.events.remove(window, 'load', doStart);
  }

  // hooks for starting the snow
  if (storm.autoStart) {
    storm.events.add(window, 'load', doStart, false);
  }

  return this;

}(window, document));

Снег, который обтекает ваш курсор 

Скрипт снежинок для сайта которые избегают ваш курсор. Красиво, эффектно. Ниже приведён исходный код и соответственно действующий пример.

HTML

<canvas id="canvas"></canvas>

CSS

body{margin:0;height:100%;}
canvas{
    position:absolute;top:0;left:0
    background-image: linear-gradient(bottom, rgb(105,173,212) 0%, rgb(23,82,145) 84%);
    background-image: -o-linear-gradient(bottom, rgb(105,173,212) 0%, rgb(23,82,145) 84%);
    background-image: -moz-linear-gradient(bottom, rgb(105,173,212) 0%, rgb(23,82,145) 84%);
    background-image: -webkit-linear-gradient(bottom, rgb(105,173,212) 0%, rgb(23,82,145) 84%);
    background-image: -ms-linear-gradient(bottom, rgb(105,173,212) 0%, rgb(23,82,145) 84%);
    
    background-image: -webkit-gradient(
        linear,
        left bottom,
        left top,
        color-stop(0, rgb(105,173,212)),
        color-stop(0.84, rgb(23,82,145))
    );
}



Resources

JS

(function() {
    var requestAnimationFrame = window.requestAnimationFrame || window.mozRequestAnimationFrame || window.webkitRequestAnimationFrame || window.msRequestAnimationFrame ||
    function(callback) {
        window.setTimeout(callback, 1000 / 60);
    };
    window.requestAnimationFrame = requestAnimationFrame;
})();


var flakes = [],
    canvas = document.getElementById("canvas"),
    ctx = canvas.getContext("2d"),
    flakeCount = 400,
    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,
            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 + ")";
        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) + 2;
    flake.speed = (Math.random() * 1) + 0.5;
    flake.velY = flake.speed;
    flake.velX = 0;
    flake.opacity = (Math.random() * 0.5) + 0.3;
}

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) + 2,
            speed = (Math.random() * 1) + 0.5,
            opacity = (Math.random() * 0.5) + 0.3;

        flakes.push({
            speed: speed,
            velY: speed,
            velX: 0,
            x: x,
            y: y,
            size: size,
            stepSize: (Math.random()) / 30,
            step: 0,
            opacity: opacity
        });
    }

    snow();
};

canvas.addEventListener("mousemove", function(e) {
    mX = e.clientX,
    mY = e.clientY
});

window.addEventListener("resize",function(){
    canvas.width = window.innerWidth;
    canvas.height = window.innerHeight;
})

init();

Снег который движется с вашим курсором

Вариант падающего снега для сайта который движется за вашим курсором. Сделан по аналогии с предыдущим скриптом снега.

HTML

<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Codystar">
<h1>Lenger.KZ</h1>
<div id="snow"></div>

CSS

html {
    height: 100%;
    overflow: hidden;
}

body {
    margin: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    color: #fff;
    background-color: #9cf;
    background-image: -webkit-gradient(linear, left top, left bottom, from(#6af), to(#bdf));
    background-image: -webkit-linear-gradient(#6af, #bdf);
    background-image: -moz-linear-gradient(#6af, #bdf);
    background-image: linear-gradient(#6af, #bdf);
}

::-webkit-scrollbar {
    display: none;
}

h1 {
    position: absolute;
    margin: auto;
    top: 50%;
    left: 50%;
    -webkit-transform: translate(-50%, -50%);
    -moz-transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
    text-align: center;
    font: 10em "Codystar", sans-serif;
    pointer-events: none;
    -webkit-user-select: none;
    user-select: none;
}

.snowflake {
    position: absolute;
    display: block;
    position: absolute;
    -webkit-border-radius: 50%;
    -moz-border-radius: 50%;
    border-radius: 50%;
    -webkit-transform: translateZ(0);
    -moz-transform: translateZ(0);
    -ms-transform: translateZ(0);
    -o-transform: translateZ(0);
    transform: translateZ(0);
    -webkit-user-select: none;
    -moz-user-select: none;
    user-select: none;
    background-image: -webkit-radial-gradient(
  center,
  circle farthest-corner,
  rgba(255, 255, 255, 1) 40%,
  rgba(255, 255, 255, 0) 100%
    );
    background-image: -moz-radial-gradient(
  center,
  circle farthest-corner,
  rgba(255, 255, 255, 1) 40%,
  rgba(255, 255, 255, 0) 100%
    );
    background-image: -ms-radial-gradient(
  center,
  circle farthest-corner,
  rgba(255, 255, 255, 1) 40%,
  rgba(255, 255, 255, 0) 100%
    );
    background-image: radial-gradient(
  center,
  circle farthest-corner,
  rgba(255, 255, 255, 1) 40%,
  rgba(255, 255, 255, 0) 100%
    );
}

#snow {
    position: absolute;
    width: 100%;
    height: 100%;
}

JS

var Snowflake = (function() {

    var flakes;
    var flakesTotal = 250;
    var wind = 0;
    var mouseX;
    var mouseY;

    function Snowflake(size, x, y, vx, vy) {
  this.size = size;
  this.x = x;
  this.y = y;
  this.vx = vx;
  this.vy = vy;
  this.hit = false;
  this.melt = false;
  this.div = document.createElement('div');
  this.div.classList.add('snowflake');
  this.div.style.width = this.size + 'px';
  this.div.style.height = this.size + 'px';
    }

    Snowflake.prototype.move = function() {
  if (this.hit) {
   if (Math.random() > 0.995) this.melt = true;
  } else {
   this.x += this.vx + Math.min(Math.max(wind, -10), 10);
   this.y += this.vy;
  }

  // Wrap the snowflake to within the bounds of the page
  if (this.x > window.innerWidth + this.size) {
   this.x -= window.innerWidth + this.size;
  }

  if (this.x < -this.size) {
   this.x += window.innerWidth + this.size;
  }

  if (this.y > window.innerHeight + this.size) {
   this.x = Math.random() * window.innerWidth;
   this.y -= window.innerHeight + this.size * 2;
   this.melt = false;
  }

  var dx = mouseX - this.x;
  var dy = mouseY - this.y;
  this.hit = !this.melt && this.y < mouseY && dx * dx + dy * dy < 2400;
    };

    Snowflake.prototype.draw = function() {
  this.div.style.transform =
  this.div.style.MozTransform =
  this.div.style.webkitTransform =
   'translate3d(' + this.x + 'px' + ',' + this.y + 'px,0)';
    };

    function update() {
  for (var i = flakes.length; i--; ) {
   var flake = flakes[i];
   flake.move();
   flake.draw();
  }
  requestAnimationFrame(update);
    }

    Snowflake.init = function(container) {
  flakes = [];

  for (var i = flakesTotal; i--; ) {
   var size = (Math.random() + 0.2) * 12 + 1;
   var flake = new Snowflake(
    size,
    Math.random() * window.innerWidth,
    Math.random() * window.innerHeight,
    Math.random() - 0.5,
    size * 0.3
   );
   container.appendChild(flake.div);
   flakes.push(flake);
  }
    
    container.onmousemove = function(event) {
    mouseX = event.clientX;
    mouseY = event.clientY;
    wind = (mouseX - window.innerWidth / 2) / window.innerWidth * 6;
   };

   container.ontouchstart = function(event) {
    mouseX = event.targetTouches[0].clientX;
    mouseY = event.targetTouches[0].clientY;
    event.preventDefault();
   };

   window.ondeviceorientation = function(event) {
    if (event) {
     wind = event.gamma / 10;
    }
   };
    
   update();
    };

    return Snowflake;

}());

window.onload = function() {
  setTimeout(function() {
   Snowflake.init(document.getElementById('snow'));
  }, 500);
}

Пурга, метель на сайт скрипт

Ну и последний на сегодня скрипт реальной метели на сайт. Смотрится очень эффектно. С настройками можно поиграться.

HTML

<canvas id='canv'></canvas>
<h2>Lenger.kZ</h2>

CSS

@import url(https://fonts.googleapis.com/css?family=Molle:400italic&subset=latin,latin-ext);
body{
background-color: hsla(0,0%,0%,1);
margin: 0px;
overflow: hidden;
font-family: 'Molle', cursive;
}
h2{
  left: 50%;
  position: absolute;
  top: 50%;
  transform: translate( -50%, -50%);
  font-size:3em;
  color:hsla(255, 255%, 255%, .1);
}

JS

var c = document.getElementById('canv'),
    $ = c.getContext("2d");
var w = c.width = window.innerWidth,
    h = c.height = window.innerHeight;

Snowy();
function Snowy() {
  var snow, arr = [];
  var num = 600, tsc = 1, sp = 1;
  var sc = 1.3, t = 0, mv = 20, min = 1;
    for (var i = 0; i < num; ++i) {
      snow = new Flake();
      snow.y = Math.random() * (h + 50);
      snow.x = Math.random() * w;
      snow.t = Math.random() * (Math.PI * 2);
      snow.sz = (100 / (10 + (Math.random() * 100))) * sc;
      snow.sp = (Math.pow(snow.sz * .8, 2) * .15) * sp;
      snow.sp = snow.sp < min ? min : snow.sp;
      arr.push(snow);
    }
  go();
  function go(){
    window.requestAnimationFrame(go);
      $.clearRect(0, 0, w, h);
      $.fillStyle = 'hsla(242, 95%, 3%, 1)';
      $.fillRect(0, 0, w, h);
      $.fill();
        for (var i = 0; i < arr.length; ++i) {
          f = arr[i];
          f.t += .05;
          f.t = f.t >= Math.PI * 2 ? 0 : f.t;
          f.y += f.sp;
          f.x += Math.sin(f.t * tsc) * (f.sz * .3);
          if (f.y > h + 50) f.y = -10 - Math.random() * mv;
          if (f.x > w + mv) f.x = - mv;
          if (f.x < - mv) f.x = w + mv;
          f.draw();}
}
function Flake() {
   this.draw = function() {
      this.g = $.createRadialGradient(this.x, this.y, 0, this.x, this.y, this.sz);
      this.g.addColorStop(0, 'hsla(255,255%,255%,1)');
      this.g.addColorStop(1, 'hsla(255,255%,255%,0)');
      $.moveTo(this.x, this.y);
      $.fillStyle = this.g;
      $.beginPath();
      $.arc(this.x, this.y, this.sz, 0, Math.PI * 2, true);
      $.fill();}
  }
}
/*________________________________________*/
window.addEventListener('resize', function(){
  c.width = w = window.innerWidth;
  c.height = h = window.innerHeight;
}, false);

Ну вот собственно и всё, надеюсь подборка красивых сниппетов снега не останется без внимания. Если так то палец вверх!

Всех с Наступающими зимними праздниками!!!