var DOMReady = function(a, b, c) {
  b = document
  c = 'addEventListener'
  b[c] ? b[c]('DocumentContentLoaded', a) : window.attachEvent('onload', a)
}

DOMReady(function () {
  alert('The DOM is Ready!');
});

_.cookie = function(name, value, options) {
  if (typeof value === "undefined") {
      var n, v,
          cookies = document.cookie.split(";");
      for (var i = 0; i < cookies.length; i++) {
          n = $.trim(cookies[i].substr(0,cookies[i].indexOf("=")));
          v = cookies[i].substr(cookies[i].indexOf("=")+1);
          if (n === name){
              return unescape(v);
          }
      }
  } else {
      options = options || {};
      if (!value) {
          value = "";
          options.expires = -365;
      } else {
          value = escape(value);
      }
      if (options.expires) {
          var d = new Date();
          d.setDate(d.getDate() + options.expires);
          value += "; expires=" + d.toUTCString();
      }
      if (options.domain) {
          value += "; domain=" + options.domain;
      }
      if (options.path) {
          value += "; path=" + options.path;
      }
      document.cookie = name + "=" + value;
  }
};

function isInViewport(el) {
    var rect = el.getBoundingClientRect();

    return rect.bottom > 0 &&
        rect.right > 0 &&
        rect.left < (window.innerWidth || document. documentElement.clientWidth) &&
        rect.top < (window.innerHeight || document. documentElement.clientHeight);
}

window.addEventListener('scroll', function() {
    isInViewport(el);
})

function checkFont(strFamily) {
  var objDiv = document.createElement('div');

  objDiv.style.fontFamily = strFamily;
  objDiv.appendChild(document.createTextNode('FONT TEST'));

  if (window.getComputedStyle) {
      return window.getComputedStyle(objDiv, null).getPropertyValue('font-family') === strFamily;
  }

  return objDiv.currentStyle.fontFamily === strFamily;
}

<textarea rows="10" cols="50" onclick="this.focus();this.select()" readonly="readonly">
   example text
</textarea>

(function(doc, script) {
  var js,
      fjs = doc.getElementsByTagName(script)[0],
      frag = doc.createDocumentFragment(),
      add = function(url, id) {
          if (doc.getElementById(id)) {return;}
          js = doc.createElement(script);
          js.src = url;
          id && (js.id = id);
          frag.appendChild( js );
      };

    // Google+ button
    add('https://apis.google.com/js/plusone.js');
    // Facebook SDK
    add('//connect.facebook.net/en_US/all.js#xfbml=1&appId=200103733347528', 'facebook-jssdk');
    // Twitter SDK
    add('//platform.twitter.com/widgets.js');

    fjs.parentNode.insertBefore(frag, fjs);
}(document, 'script'));

var Loader = function () { }
Loader.prototype = {
    require: function (scripts, callback) {
        this.loadCount      = 0;
        this.totalRequired  = scripts.length;
        this.callback       = callback;

        for (var i = 0; i < scripts.length; i++) {
            this.writeScript(scripts[i]);
        }
    },
    loaded: function (evt) {
        this.loadCount++;

        if (this.loadCount == this.totalRequired && typeof this.callback == 'function') this.callback.call();
    },
    writeScript: function (src) {
        var self = this;
        var s = document.createElement('script');
        s.type = "text/javascript";
        s.async = true;
        s.src = src;
        s.addEventListener('load', function (e) { self.loaded(e); }, false);
        var head = document.getElementsByTagName('head')[0];
        head.appendChild(s);
    }
}

var l = new Loader();
l.require([
    "example-script-1.js",
    "example-script-2.js"],
    function() {
        // Callback
        console.log('All Scripts Loaded');
    });

<a href="http://site.com" onclick="window.external.AddFavorite(this.href,this.innerHTML);">添加到收藏夹</a>

window.external.AddFavorite(url, text);

<!-- first try HTML5 playback: if serving as XML, expand `controls` to `controls="controls"` and autoplay likewise -->
<!-- warning: playback does not work on iOS3 if you include the poster attribute! fixed in iOS4.0 -->
<video width="640" height="360" controls>
  <!-- MP4 must be first for iPad! -->
  <source src="__VIDEO__.MP4" type="video/mp4" /><!-- Safari / iOS video    -->
  <source src="__VIDEO__.OGV" type="video/ogg" /><!-- Firefox / Opera / Chrome10 -->
  <!-- fallback to Flash: -->
  <object width="640" height="360" type="application/x-shockwave-flash" data="__FLASH__.SWF">
    <!-- Firefox uses the `data` attribute above, IE/Safari uses the param below -->
    <param name="movie" value="__FLASH__.SWF" />
    <param name="flashvars" value="controlbar=over&amp;image=__POSTER__.JPG&amp;file=__VIDEO__.MP4" />
    <!-- fallback image. note the title field below, put the title of the video there -->
    <img src="__VIDEO__.JPG" width="640" height="360" alt="__TITLE__"
         title="No video playback capabilities, please download the video below" />
  </object>
</video>
<!-- you *must* offer a download link as they may be able to play the file locally. customise this bit all you want -->
<p> <strong>Download Video:</strong>
  Closed Format:  <a href="__VIDEO__.MP4">"MP4"</a>
  Open Format:  <a href="__VIDEO__.OGV">"Ogg"</a>
</p>

I love <acronym title="Cascading Style Sheets">CSS</acronym>.