How to drag the sidebar?
<p>I am unable to drag the sidebar left or right. I want to increase and decrease the sidebar when it is dragged to the right and the left. When I tried to increase or decrease the width of the sidebar, it remained the same. There were no changes happening in that.</p>

<p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
<div class="snippet-code">
<pre class="snippet-code-js lang-js prettyprint-override"><code>var i = 0;
$('#dragbar').mousedown(function(e) {

  e.preventDefault();
  $('#mousestatus').html("mousedown" + i++);
  $(document).mousemove(function(e) {
    $('#position').html(e.pageX + ', ' + e.pageY);
    $('#sidebar').css("width", e.pageX + 2);
    $('#main').css("left", e.pageX + 2);
  })
  console.log("leaving mouseDown");
});
$(document).mouseup(function(e) {
  $('#clickevent').html('in another mouseUp event' + i++);
  $(document).unbind('mousemove');
});</code></pre>
<pre class="snippet-code-css lang-css prettyprint-override"><code>#main {
  background-color: BurlyWood;
  float: right;
  position: absolute;
  top: 100px;
  bottom: 38px;
  right: 0;
  left: 200px;
}
#sidebar {
  background-color: IndianRed;
  width: 200px;
  float: left;
  position: absolute;
  top: 100px;
  bottom: 38px;
  overflow-y: hidden;
}
#footer {
  background-color: PaleGoldenRod;
  width: 100%;
  height: 38px;
  bottom: 0;
  position: absolute;
}
#header {
  background-color: wheat;
  width: 100%;
  height: 100px;
}
#dragbar {
  background-color: black;
  height: 100%;
  float: right;
  width: 3px;
  cursor: col-resize;
}</code></pre>
<pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"&gt;&lt;/script&gt;
&lt;div id="header"&gt;
  header
  &lt;span id="mousestatus"&gt;&lt;/span&gt;
  &lt;span id="clickevent"&gt;&lt;/span&gt;
&lt;/div&gt;
&lt;div id="sidebar"&gt;
  &lt;span id="position"&gt;&lt;/span&gt;
  &lt;div id="dragbar"&gt;&lt;/div&gt;
  sidebar
&lt;/div&gt;
&lt;div id="main"&gt;
  main
&lt;/div&gt;
&lt;div id="footer"&gt;
  footer
&lt;/div&gt;</code></pre>
</div>
</div>
</p>