Edit in JSFiddle

/*********************************************************************
*  #### Twitter Post Fetcher v10.0 ####
*  Coded by Jason Mayes 2013. A present to all the developers out there.
*  www.jasonmayes.com
*  Please keep this disclaimer with my code if you use it. Thanks. :-)
*  Got feedback or questions, ask here: 
*  http://www.jasonmayes.com/projects/twitterApi/
*  Github: https://github.com/jasonmayes/Twitter-Post-Fetcher
*  Updates will be posted to this site.
*********************************************************************/
var twitterFetcher=function(){function x(e){return e.replace(/<b[^>]*>(.*?)<\/b>/gi,function(c,e){return e}).replace(/class=".*?"|data-query-source=".*?"|dir=".*?"|rel=".*?"/gi,"")}function p(e,c){for(var g=[],f=RegExp("(^| )"+c+"( |$)"),a=e.getElementsByTagName("*"),h=0,d=a.length;h<d;h++)f.test(a[h].className)&&g.push(a[h]);return g}var y="",l=20,s=!0,k=[],t=!1,q=!0,r=!0,u=null,v=!0,z=!0,w=null,A=!0;return{fetch:function(e,c,g,f,a,h,d,b,m,n){void 0===g&&(g=20);void 0===f&&(s=!0);void 0===a&&(a=
!0);void 0===h&&(h=!0);void 0===d&&(d="default");void 0===b&&(b=!0);void 0===m&&(m=null);void 0===n&&(n=!0);t?k.push({id:e,domId:c,maxTweets:g,enableLinks:f,showUser:a,showTime:h,dateFunction:d,showRt:b,customCallback:m,showInteraction:n}):(t=!0,y=c,l=g,s=f,r=a,q=h,z=b,u=d,w=m,A=n,c=document.createElement("script"),c.type="text/javascript",c.src="//cdn.syndication.twimg.com/widgets/timelines/"+e+"?&lang=en&callback=twitterFetcher.callback&suppress_response_codes=true&rnd="+Math.random(),document.getElementsByTagName("head")[0].appendChild(c))},
callback:function(e){var c=document.createElement("div");c.innerHTML=e.body;"undefined"===typeof c.getElementsByClassName&&(v=!1);e=[];var g=[],f=[],a=[],h=[],d=0;if(v)for(c=c.getElementsByClassName("tweet");d<c.length;){0<c[d].getElementsByClassName("retweet-credit").length?a.push(!0):a.push(!1);if(!a[d]||a[d]&&z)e.push(c[d].getElementsByClassName("e-entry-title")[0]),h.push(c[d].getAttribute("data-tweet-id")),g.push(c[d].getElementsByClassName("p-author")[0]),f.push(c[d].getElementsByClassName("dt-updated")[0]);
d++}else for(c=p(c,"tweet");d<c.length;)e.push(p(c[d],"e-entry-title")[0]),h.push(c[d].getAttribute("data-tweet-id")),g.push(p(c[d],"p-author")[0]),f.push(p(c[d],"dt-updated")[0]),0<p(c[d],"retweet-credit").length?a.push(!0):a.push(!1),d++;e.length>l&&(e.splice(l,e.length-l),g.splice(l,g.length-l),f.splice(l,f.length-l),a.splice(l,a.length-l));c=[];d=e.length;for(a=0;a<d;){if("string"!==typeof u){var b=new Date(f[a].getAttribute("datetime").replace(/-/g,"/").replace("T"," ").split("+")[0]),b=u(b);
f[a].setAttribute("aria-label",b);if(e[a].innerText)if(v)f[a].innerText=b;else{var m=document.createElement("p"),n=document.createTextNode(b);m.appendChild(n);m.setAttribute("aria-label",b);f[a]=m}else f[a].textContent=b}b="";s?(r&&(b+='<div class="user">'+x(g[a].innerHTML)+"</div>"),b+='<p class="tweet">'+x(e[a].innerHTML)+"</p>",q&&(b+='<p class="timePosted">'+f[a].getAttribute("aria-label")+"</p>")):e[a].innerText?(r&&(b+='<p class="user">'+g[a].innerText+"</p>"),b+='<p class="tweet">'+e[a].innerText+
"</p>",q&&(b+='<p class="timePosted">'+f[a].innerText+"</p>")):(r&&(b+='<p class="user">'+g[a].textContent+"</p>"),b+='<p class="tweet">'+e[a].textContent+"</p>",q&&(b+='<p class="timePosted">'+f[a].textContent+"</p>"));A&&(b+='<p class="interact"><a href="https://twitter.com/intent/tweet?in_reply_to='+h[a]+'" class="twitter_reply_icon">Reply</a><a href="https://twitter.com/intent/retweet?tweet_id='+h[a]+'" class="twitter_retweet_icon">Retweet</a><a href="https://twitter.com/intent/favorite?tweet_id='+
h[a]+'" class="twitter_fav_icon">Favorite</a></p>');c.push(b);a++}if(null==w){e=c.length;g=0;f=document.getElementById(y);for(h="<ul>";g<e;)h+="<li>"+c[g]+"</li>",g++;f.innerHTML=h+"</ul>"}else w(c);t=!1;0<k.length&&(twitterFetcher.fetch(k[0].id,k[0].domId,k[0].maxTweets,k[0].enableLinks,k[0].showUser,k[0].showTime,k[0].dateFunction,k[0].showRt,k[0].customCallback,k[0].showInteraction),k.splice(0,1))}}}();


/*
* ### HOW TO CREATE A VALID ID TO USE: ###
* Go to www.twitter.com and sign in as normal, go to your settings page.
* Go to "Widgets" on the left hand side.
* Create a new widget for what you need eg "user timeline" or "search" etc. 
* Feel free to check "exclude replies" if you dont want replies in results.
* Now go back to settings page, and then go back to widgets page, you should
* see the widget you just created. Click edit.
* Now look at the URL in your web browser, you will see a long number like this:
* 345735908357048478
* Use this as your ID below instead!
*/

/**
 * How to use fetch function:
 * @param {string} Your Twitter widget ID.
 * @param {string} The ID of the DOM element you want to write results to. 
 * @param {int} Optional - the maximum number of tweets you want returned. Must
 *     be a number between 1 and 20.
 * @param {boolean} Optional - set true if you want urls and hash
       tags to be hyperlinked!
 * @param {boolean} Optional - Set false if you dont want user photo /
 *     name for tweet to show.
 * @param {boolean} Optional - Set false if you dont want time of tweet
 *     to show.
 * @param {function/string} Optional - A function you can specify to format
 *     tweet date/time however you like. This function takes a JavaScript date
 *     as a parameter and returns a String representation of that date.
 *     Alternatively you may specify the string 'default' to leave it with
 *     Twitter's default renderings.
 * @param {boolean} Optional - Show retweets or not. Set false to not show.
 * @param {function/string} Optional - A function to call when data is ready. It
 *     also passes the data to this function should you wish to manipulate it
 *     yourself before outputting. If you specify this parameter you  must
 *     output data yourself!
 * @param {boolean} Optional - Show links for reply, retweet, favourite. Set false to not show.
 */

// ##### Simple example 1 #####
// A simple example to get my latest tweet and write to a HTML element with
// id "tweets". Also automatically hyperlinks URLS and user mentions and
// hashtags.
twitterFetcher.fetch('345170787868762112', 'example1', 1, true);


// ##### Simple example 2 #####
// A simple example to get my latest 5 of my favourite tweets and write to a HTML
// element with id "talk". Also automatically hyperlinks URLS and user mentions and
// hashtags but does not display time of post.
twitterFetcher.fetch('347099293930377217', 'example2', 5, true, true, false);


// ##### Advanced example #####
// An advance example to get latest 5 posts using hashtag #API and write to a
// HTML element with id "tweets2" without showing user details and using a
// custom format to display the date/time of the post, and does not show
// retweets.
twitterFetcher.fetch('345690956013633536', 'example3', 3, true, false, true, dateFormatter, false);

// For advanced example which allows you to customize how tweet time is
// formatted you simply define a function which takes a JavaScript date as a
// parameter and returns a string!
// See http://www.w3schools.com/jsref/jsref_obj_date.asp for properties
// of a Date object.
function dateFormatter(date) {
  return date.toTimeString();
}


// ##### Advanced example 2 #####
// Similar as previous, except this time we pass a custom function to render the
// tweets ourself! Useful if you need to know exactly when data has returned or
// if you need full control over the output.
twitterFetcher.fetch('345690956013633536', 'example4', 3, true, true, true, '', false, handleTweets, false);

function handleTweets(tweets){
    var x = tweets.length;
    var n = 0;
    var element = document.getElementById('example4');
    var html = '<ul>';
    while(n < x) {
      html += '<li>' + tweets[n] + '</li>';
      n++;
    }
    html += '</ul>';
    element.innerHTML = html;
}
<html>
  <head></head>
  <body>
      <h1>For latest code please see <a href="https://github.com/jasonmayes/Twitter-Post-Fetcher" title="Twitter Fetcher on GitHub">GitHub</a></h1>
      <p>As of version 10.0 I am no longer posting to updates to jsfiddle and keeping things central on github instead due to the popularity of this component.</p>
    <a id="linkage" href="http://www.jasonmayes.com/projects/twitterApi/" target="_blank">Visit my website</a>
    <h2>Query 1: My latest tweet</h2>
    <div id="example1"></div>
    <h2>Query 2: What people are saying about this component!</h2>
    <div id="example2"></div>
    <h2>Query 3: Last 3 Twitter posts using hastag #API</h2>
    <div id="example3"></div>
    <h2>Query 4: Last 3 Twitter posts using hastag #API with custom callback</h2>
    <div id="example4"></div>
  </body>
</html>
/* 
* Example style!
* You can do whatever the hell you want on your site :-)
*/

h2 {
  clear:both;
}

p, a {
  font-size:9pt;
  margin:10px 0 0 0;
  color:#3d3d3d;
}

h1, h1 a {
  font-size:24pt;
}

a, a:visited {
  color:#427fed;
}

a:hover {
  color:#82afff;
}

ul li {
  list-style:none;
  overflow:hidden;
  border:1px solid #dedede;
  margin:5px;
  padding:5px;
}

ul li:hover {
  background-color:#f0f3fb;
}

.user, .tweet, .timePosted {
  float:left;
}

.user {
  width:25%;
}

.tweet {
  width:50%;
}

.timePosted {
  width:15%;
}

.user {
  clear:left;
}

.user a {
 width: 100px;
}

.user span span {
  width:100px;
  display:block;
  margin-top:10px;
}

.user img, .user a > span {
  float:left;
}

.interact {
  float:left;
  width:10%;
  margin-top:-7px;
}

.interact a {
  margin-left:5px;
  float:left;
}

.user a > span {
  margin-left:10px;
}

#linkage {
  position:fixed;
  top:0px;
  right:0px;
  background-color:#3d3d3d;
  color:#ffffff;
  text-decoration:none;
  padding:5px;
  width:10%;
  font-family:arial;
}