Cara Membuat Efek Salju Di Blogger (Animasi Hujan Salju)

Animasi hujan salju / efek salju adalah salah satu widget untuk blog yang juga bisa dipasang pada blogger sebagai hiasan blog.

Sebenarnya sudah banyak blogger yang menuliskan panduan bagaimana cara membuat efek salju di blogger / animasi hujan salju ini menggunakan script efek salju. Yang mana widget efek salju ini akan membuat blog kita seperti berada pada musim salju.

Di sini saya akan mencoba menuliskan kembali tutorial cara membuat efek salju di blogger menggunakan script efek salju yang bernama Snowstorm dengan cara memasang script efek salju secara internal di blogger, yang mana seluruh kode script akan kita sisipkan di blogger, jadi kita tidak perlu menyimpannya pada hosting, dan cara ini lebih aman bagi kita yang tidak memiliki hosting sendiri, karena tidak perlu numpang menggunakan script efek salju yang di simpan pada hosting orang lain.

Namun jika menggunakan cara ini maka script efek salju akan terlihat panjang / banyak, tidak seperti yang menggunakan script external yang terlihat lebih sederhana, namun isi dan initinya tetap sama.

2 Cara Membuat Efek Salju Di Blogger / Animasi Hujan Salju Untuk Blogger

Di sini saya akan menuliskan 2 cara membuat efek salju di blogger yang bisa sobat pilih mana yang menurut sobat lebih mudah.

Cara Pertama

Cara membuat efek salju di blogger yang pertama ini adalah cara yang termudah (menurut saya pribadi), dan jika sobat menggunakan cara ini maka tidak perlu takut template yang digunakan jadi error, karena kita tidak mengedit template.

Berikut langkah - langkah cara membuat efek salju di blogger yang pertama :

Silakan masuk ke dasbor blogger dahulu
Buka halaman Tata Letak
Tambah Gadget / Add A Gadget, pilih Gadget HTML/JavaScript
Masukkan script efek salju pada bagian Konten / Content
Terakhir Simpan / Save
Selesai

Cara Membuat Efek Salju Di Blogger (Animasi Hujan Salju)

Cara kedua :

Cara membuat efek salju di blogger yang kedua ini sebenarnya juga mudah, namun perlu teliti, karena memiliki risiko (template bisa error atau rusak), namun asalkan sobat teliti maka tidak perlu takut.

Adapun langkah - langkah yang harus dilakukan adalah sebagai berikut :

Masuk ke dasbor blogger
Buka halaman Template
klik Edit HTML yang berada di bawah template blogger yang di gunakan saat ini
Masukkan script efek salju sebelum kode </body>
Simpan pengaturan template dan selesai

Nah itulah 2 cara membuat efek salju di blogger, silakan pilih cara yang mudah menurut sobat.

Script Efek Salju Untuk Blogger

Berikut script efek salju yang harus sobat pasang

<script type='text/javascript'>//<![CDATA[
/*  DHTML Snowstorm! OO-style Jascript-based Snow effect - Version 1.4.20091115 (Previous rev: v1.3.20081215) - Code by Scott Schiller - http://schillmania.com
Initializes after body onload() by default (via addEventHandler() call at bottom.)
To customize properties, edit below or override configuration after this script
has run (but before body.onload), eg. snowStorm.snowStick = false;
*/
var snowStorm = null;
function SnowStorm() {
  // --- PROPERTIES ---
  this.flakesMax = 128;           // Limit total amount of snow made (falling + sticking)
  this.flakesMaxActive = 64;      // Limit amount of snow falling at once (less = lower CPU use)
  this.animationInterval = 33;    // Theoretical "miliseconds per frame" measurement. 20 = fast + smooth, but high CPU use. 50 = more conservative, but slower
  this.flakeBottom = null;        // Integer for Y axis snow limit, 0 or null for "full-screen" snow effect
  this.targetElement = null;      // element which snow will be appended to (document body if null/undefined) - can be an element ID string, or a DOM node reference
  this.followMouse = true;        // Snow will change movement with the user's mouse
  this.snowColor = '#fff';        // Don't eat (or use?) yellow snow.
  this.snowCharacter = '&bull;';  // &bull; = bullet, &middot; is square on some systems etc.
  this.snowStick = true;          // Whether or not snow should "stick" at the bottom. When off, will never collect.
  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 not affected by window scroll. may increase CPU load, disabled by default - if enabled, used only where supported
  // --- less-used bits ---
  this.flakeLeftOffset = 0;       // amount to subtract from edges of container
  this.flakeRightOffset = 0;      // amount to subtract from edges of container
  this.flakeWidth = 8;            // max pixel width for snow element
  this.flakeHeight = 8;           // max pixel height for snow element
  this.vMaxX = 5;                 // Maximum X velocity range for snow
  this.vMaxY = 4;                 // Maximum Y velocity range
  this.zIndex = 0;                // CSS stacking order applied to each snowflake
  // --- End of user section ---
  // jslint global declarations
  /*global window, document, navigator, clearInterval, setInterval */
  var addEvent = (typeof(window.attachEvent)=='undefined'?function(o,evtName,evtHandler) {
 return o.addEventListener(evtName,evtHandler,false);
  }:function(o,evtName,evtHandler) {
 return o.attachEvent('on'+evtName,evtHandler);
  });
  var removeEvent = (typeof(window.attachEvent)=='undefined'?function(o,evtName,evtHandler) {
    return o.removeEventListener(evtName,evtHandler,false);
  }:function(o,evtName,evtHandler) {
 return o.detachEvent('on'+evtName,evtHandler);
  });
  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);
  }
  var s = this;
  var storm = this;
  this.timers = [];
  this.flakes = [];
  this.disabled = false;
  this.active = false;

  var isIE = navigator.userAgent.match(/msie/i);
  var isIE6 = navigator.userAgent.match(/msie 6/i);
  var isOldIE = (isIE && (isIE6 || navigator.userAgent.match(/msie 5/i)));
  var isWin9X = navigator.appVersion.match(/windows 98/i);
  var isiPhone = navigator.userAgent.match(/iphone/i);
  var isBackCompatIE = (isIE && document.compatMode == 'BackCompat');
  var noFixed = ((isBackCompatIE || isIE6 || isiPhone)?true:false);
  var screenX = null;
  var screenX2 = null;
  var screenY = null;
  var scrollY = null;
  var vRndX = null;
  var vRndY = null;
  var windOffset = 1;
  var windMultiplier = 2;
  var flakeTypes = 6;
  var fixedForEverything = false;
  var opacitySupported = (function(){
    try {
   document.createElement('div').style.opacity = '0.5';
    } catch (e) {
   return false;
    }
    return true;
  })();
  var docFrag = document.createDocumentFragment();
  if (s.flakeLeftOffset === null) {
 s.flakeLeftOffset = 0;
  }
  if (s.flakeRightOffset === null) {
 s.flakeRightOffset = 0;
  }
  this.meltFrameCount = 20;
  this.meltFrames = [];
  for (var i=0; i<this.meltFrameCount; i++) {
 this.meltFrames.push(1-(i/this.meltFrameCount));
  }
  this.randomizeWind = function() {
    vRndX = plusMinus(rnd(s.vMaxX,0.2));
    vRndY = rnd(s.vMaxY,0.2);
    if (this.flakes) {
      for (var i=0; i<this.flakes.length; i++) {
        if (this.flakes[i].active) {
          this.flakes[i].setVelocities();
  }
      }
    }
  };
  this.scrollHandler = function() {
    // "attach" snowflakes to bottom of window if no absolute bottom value was given
    scrollY = (s.flakeBottom?0:parseInt(window.scrollY||document.documentElement.scrollTop||document.body.scrollTop,10));
    if (isNaN(scrollY)) {
   scrollY = 0; // Netscape 6 scroll fix
 }
    if (!fixedForEverything && !s.flakeBottom && s.flakes) {
      for (var i=s.flakes.length; i--;) {
        if (s.flakes[i].active === 0) {
       s.flakes[i].stick();
  }
      }
    }
  };
  this.resizeHandler = function() {
    if (window.innerWidth || window.innerHeight) {
      screenX = window.innerWidth-(!isIE?16:2)-s.flakeRightOffset;
      screenY = (s.flakeBottom?s.flakeBottom:window.innerHeight);
    } else {
      screenX = (document.documentElement.clientWidth||document.body.clientWidth||document.body.scrollWidth)-(!isIE?8:0)-s.flakeRightOffset;
      screenY = s.flakeBottom?s.flakeBottom:(document.documentElement.clientHeight||document.body.clientHeight||document.body.scrollHeight);
    }
    screenX2 = parseInt(screenX/2,10);
  };

  this.resizeHandlerAlt = function() {
    screenX = s.targetElement.offsetLeft+s.targetElement.offsetWidth-s.flakeRightOffset;
    screenY = s.flakeBottom?s.flakeBottom:s.targetElement.offsetTop+s.targetElement.offsetHeight;
    screenX2 = parseInt(screenX/2,10);
  };

  this.freeze = function() {
    // pause animation
    if (!s.disabled) {
      s.disabled = 1;
    } else {
      return false;
    }
    for (var i=s.timers.length; i--;) {
      clearInterval(s.timers[i]);
    }
  };
  this.resume = function() {
    if (s.disabled) {
       s.disabled = 0;
    } else {
      return false;
    }
    s.timerInit();
  };

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

  this.stop = function() {
    this.freeze();
    for (var i=this.flakes.length; i--;) {
      this.flakes[i].o.style.display = 'none';
    }
    removeEvent(window,'scroll',s.scrollHandler);
    removeEvent(window,'resize',s.resizeHandler);
    if (!isOldIE) {
      removeEvent(window,'blur',s.freeze);
      removeEvent(window,'focus',s.resume);
    }
  };

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

  this.SnowFlake = function(parent,type,x,y) {
    var s = this;
    var storm = parent;
    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];
    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;
    this.o.style.color = storm.snowColor;
    this.o.style.position = (fixedForEverything?'fixed':'absolute');
    this.o.style.width = storm.flakeWidth+'px';
    this.o.style.height = storm.flakeHeight+'px';
    this.o.style.fontFamily = 'arial,verdana';
    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;
   }
      s.o.style.left = s.x+'px';
      s.o.style.top = s.y+'px';
    };

    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.top = 'auto';
        s.o.style.bottom = '0px';
     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;
      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<0-storm.flakeWidth) {
        s.x = screenX-storm.flakeWidth-1; // flakeWidth;
      }
      s.refresh();
      var yDiff = screenY+scrollY-s.y;
      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) {
   if (Math.random()>0.9) {
        s.twinkleFrame = parseInt(Math.random()*20,10);
      }
    } else {
   s.twinkleFrame--;
   s.o.style.visibility = (s.twinkleFrame && s.twinkleFrame%2===0?'hidden':'visible');
    }
     }
      }
    };

    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.meltFrame++;
    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';
  } 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;
    var used = 0;
    var waiting = 0;
    var flake = null;
    for (var i=s.flakes.length; i--;) {
      if (s.flakes[i].active == 1) {
        s.flakes[i].move();
        active++;
      } else if (s.flakes[i].active === 0) {
        used++;
      } else {
        waiting++;
      }
      if (s.flakes[i].melting) {
     s.flakes[i].melt();
   }
    }
    if (active<s.flakesMaxActive) {
      flake = s.flakes[parseInt(rnd(s.flakes.length),10)];
      if (flake.active === 0) {
        flake.melting = true;
      }
    }
  };

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

  this.timerInit = function() {
    s.timers = (!isWin9X?[setInterval(s.snow,s.animationInterval)]:[setInterval(s.snow,s.animationInterval*3),setInterval(s.snow,s.animationInterval)]);
  };

  this.init = function() {
    s.randomizeWind();
    s.createSnow(s.flakesMax); // create initial batch
    addEvent(window,'resize',s.resizeHandler);
    addEvent(window,'scroll',s.scrollHandler);
    if (!isOldIE) {
      addEvent(window,'blur',s.freeze);
      addEvent(window,'focus',s.resume);
    }
    s.resizeHandler();
    s.scrollHandler();
    if (s.followMouse) {
      addEvent(document,'mousemove',s.mouseMove);
    }
    s.animationInterval = Math.max(20,s.animationInterval);
    s.timerInit();
  };

  var didInit = false;

  this.start = function(bFromOnLoad) {
 if (!didInit) {
   didInit = true;
 } else if (bFromOnLoad) {
   // already loaded and running
   return true;
 }
    if (typeof s.targetElement == 'string') {
   var targetID = s.targetElement;
      s.targetElement = document.getElementById(targetID);
      if (!s.targetElement) {
     throw new Error('Snowstorm: Unable to get targetElement "'+targetID+'"');
   }
    }
 if (!s.targetElement) {
   s.targetElement = (!isIE?(document.documentElement?document.documentElement:document.body):document.body);
 }
    if (s.targetElement != document.documentElement && s.targetElement != document.body) {
   s.resizeHandler = s.resizeHandlerAlt; // re-map handler to get element instead of screen dimensions
 }
    s.resizeHandler(); // get bounding box elements
    s.usePositionFixed = (s.usePositionFixed && !noFixed); // whether or not position:fixed is supported
    fixedForEverything = s.usePositionFixed;
    if (screenX && screenY && !s.disabled) {
      s.init();
      s.active = true;
    }
  };

  function doStart() {
   s.start(true);
  }

  if (document.addEventListener) {
    // safari 3.0.4 doesn't do DOMContentLoaded, maybe others - use a fallback to be safe.
    document.addEventListener('DOMContentLoaded',doStart,false);
    window.addEventListener('load',doStart,false);
  } else {
    addEvent(window,'load',doStart);
  }

}

snowStorm = new SnowStorm();
snowStorm.snowColor = '#fff'; // salju putih (silakan ganti dengan warna lain)
//]]></script>

Keterangan :

Pada kode script efek salju untuk blogger di atas terdapat kode #fff pada kode snowStorm.snowColor = '#fff'; // salju putih (silakan ganti dengan warna lain), silakan ganti kode #fff tersebut dengan kode warna yang sobat inginkan.

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