View Demo

1. Installing the JavaScript

Code:

(function() {
  var config = {
    button_title : 'Emojis',
    auto_close : false,
    async_load : true,
   
    emoji_size : 16, // 16, 36, or 72
    emoji_list : '\uD83D\uDE00 \uD83D\uDE01 \uD83D\uDE02 \uD83D\uDE03 \uD83D\uDE04 \uD83D\uDE05 \uD83D\uDE06 \uD83D\uDE09 \uD83D\uDE0A \uD83D\uDE0B \uD83D\uDE0E \uD83D\uDE0D \uD83D\uDE18 \uD83D\uDE17 \uD83D\uDE19 \uD83D\uDE1A \u263A\uFE0F \uD83D\uDE07 \uD83D\uDE10 \uD83D\uDE11 \uD83D\uDE36 \uD83D\uDE0F \uD83D\uDE23 \uD83D\uDE25 \uD83D\uDE2E \uD83D\uDE2F \uD83D\uDE2A \uD83D\uDE2B \uD83D\uDE34 \uD83D\uDE0C \uD83D\uDE1B \uD83D\uDE1C \uD83D\uDE1D \uD83D\uDE12 \uD83D\uDE13 \uD83D\uDE14 \uD83D\uDE15 \uD83D\uDE16 \uD83D\uDE37 \uD83D\uDE32 \uD83D\uDE1E \uD83D\uDE1F \uD83D\uDE24 \uD83D\uDE22 \uD83D\uDE2D \uD83D\uDE26 \uD83D\uDE27 \uD83D\uDE28 \uD83D\uDE29 \uD83D\uDE2C \uD83D\uDE30 \uD83D\uDE31 \uD83D\uDE33 \uD83D\uDE35 \uD83D\uDE21 \uD83D\uDE20 \uD83D\uDC7F \uD83D\uDE08 \uD83D\uDC66 \uD83D\uDC67 \uD83D\uDC68 \uD83D\uDC69 \uD83D\uDC74 \uD83D\uDC75 \uD83D\uDC76 \uD83D\uDC71 \uD83D\uDC6E \uD83D\uDC72 \uD83D\uDC73 \uD83D\uDC77 \uD83D\uDC78 \uD83D\uDC82 \uD83C\uDF85 \uD83D\uDC7C \uD83D\uDC6F 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\u00AE\uFE0F \u2122\uFE0F \uD83D\uDCAF \uD83D\uDD1E \uD83D\uDD20 \uD83D\uDD21 \uD83D\uDD22 \uD83D\uDD23 \uD83D\uDD24 \uD83C\uDD70\uFE0F \uD83C\uDD8E \uD83C\uDD71\uFE0F \uD83C\uDD91 \uD83C\uDD92 \uD83C\uDD93 \u2139\uFE0F \uD83C\uDD94 \u24C2\uFE0F \uD83C\uDD95 \uD83C\uDD96 \uD83C\uDD7E\uFE0F \uD83C\uDD97 \uD83C\uDD7F\uFE0F \uD83C\uDD98 \uD83C\uDD99 \uD83C\uDD9A \uD83C\uDE01 \uD83C\uDE02\uFE0F \uD83C\uDE37\uFE0F \uD83C\uDE36 \uD83C\uDE2F \uD83C\uDE50 \uD83C\uDE39 \uD83C\uDE1A \uD83C\uDE32 \uD83C\uDE51 \uD83C\uDE38 \uD83C\uDE34 \uD83C\uDE33 \u3297\uFE0F \u3299\uFE0F \uD83C\uDE3A \uD83C\uDE35 \u25AA\uFE0F \u25AB\uFE0F \u25FB\uFE0F \u25FC\uFE0F \u25FD \u25FE \u2B1B \u2B1C \uD83D\uDD36 \uD83D\uDD37 \uD83D\uDD38 \uD83D\uDD39 \uD83D\uDD3A \uD83D\uDD3B \uD83D\uDCA0 \uD83D\uDD18 \uD83D\uDD32 \uD83D\uDD33 \u26AA \u26AB \uD83D\uDD34 \uD83D\uDD35 \uE50A \uD83C\uDDE6 \uD83C\uDDE7 \uD83C\uDDE8 \uD83C\uDDE9 \uD83C\uDDEA \uD83C\uDDEB \uD83C\uDDEC \uD83C\uDDED \uD83C\uDDEE \uD83C\uDDEF \uD83C\uDDF0 \uD83C\uDDF1 \uD83C\uDDF2 \uD83C\uDDF3 \uD83C\uDDF4 \uD83C\uDDF5 \uD83C\uDDF6 \uD83C\uDDF7 \uD83C\uDDF8 \uD83C\uDDF9 \uD83C\uDDFA \uD83C\uDDFB \uD83C\uDDFC \uD83C\uDDFD \uD83C\uDDFE \uD83C\uDDFF'
  },
 
  script = document.createElement('SCRIPT');
  script.type = 'text/javascript';
  script.src = 'http://twemoji.maxcdn.com/twemoji.min.js';
 
  document.getElementsByTagName('HEAD')[0].appendChild(script);
  document.write('<style type="text/css">.sceditor-button-twemoji div{background:url(http://twemoji.maxcdn.com/16x16/1f600.png)!important}.sceditor-twemoji{width:220px;height:250px;overflow-y:auto}.sceditor-twemoji img{cursor:pointer;padding:3px}.sceditor-twemoji img:hover{opacity:.7}</style>');
 
  $(function(){
    if ($.sceditor) {
     
      // create sceditor button and drop down
      $.sceditor.command.set('twemoji', {
        dropDown : function(editor, caller, callback) {
         
          if (!fa_twemoji.element) {
            fa_twemoji.element = document.createElement('DIV');
            fa_twemoji.element.innerHTML = twemoji.parse(fa_twemoji.emoji_list, {
              size : fa_twemoji.emoji_size,
              attributes : function() {
                return {
                  style : 'display:none;'
                };
              }
            }).replace(/\s(?=<|$)/g, '');
           
            // load handler for images to lighten the deployment of emoji
            // it displays and loads one image at a time rather all at once which can make the browser unresponsive
            if (fa_twemoji.async_load) {
              fa_twemoji.image = {
                collection : $('img', fa_twemoji.element),
                index : 0,
                timeout : [0, 6000], // timeout after 6000 attempts on 1 image
             
                load : window.setInterval(function() {
                  if (fa_twemoji.image.collection[fa_twemoji.image.index].complete) {
                    fa_twemoji.image.index++;
                 
                    if (fa_twemoji.image.collection[fa_twemoji.image.index]) {
                      fa_twemoji.image.collection[fa_twemoji.image.index].style.display = '';
                      fa_twemoji.image.timeout[0] = 0;
                    } else {
                      window.clearInterval(fa_twemoji.image.load);
                      fa_twemoji.image.load = 'COMPLETE';
                    }
                 
                  } else if (++fa_twemoji.image.timeout[0] > fa_twemoji.image.timeout[1]) {
                    window.clearInterval(fa_twemoji.image.load);
                    fa_twemoji.image.load = 'ERROR';
                  }
                }, 10)
            };
           
            fa_twemoji.image.collection[fa_twemoji.image.index].style.display = ''; // start loading
            } else {
              $('img', fa_twemoji.element).show();
            }
          }
         
          $(fa_twemoji.element).click(function(e) {
            var target = e.target;
            if (target.tagName == 'IMG') {
              callback(target.src);
              fa_twemoji.auto_close && editor.closeDropDown(true);
            }
          });
         
          editor.createDropDown(caller, 'twemoji', fa_twemoji.element);
        },

        // wysiwyg
        exec : function(c) {
          var e = this;
          $.sceditor.command.get('twemoji').dropDown(e, c, function(icon) {
            e.insert('&nbsp;[img]' + icon + '[/img]&nbsp;', '', true, true, true);
          });
        },
   
        // source
        txtExec : function(c) {
          var e = this;
          $.sceditor.command.get('twemoji').dropDown(e, c, function(icon) {
            e.insert(' [img]' + icon + '[/img] ', '', true, true, true);
          });
        },
   
        tooltip : fa_twemoji.button_title
      });
 
      toolbar = toolbar.replace(/date,/,'twemoji,date,'); // add the button to the toolbar
    }
  });
 
  if (!window.fa_twemoji) {
    window.fa_twemoji = config;
  }
}());

2. Modifications