<div>
Thank you <br />
I understand the concept but i have two questions<br />
<br />
1- What that exactly mean and do <br />
<br />
&nbsp; var scroll = $(window).scrollTop();<br />
<br />
2- &nbsp; if (scroll &gt;&nbsp;0 ) {<br />
<br />
what 0 refer explain the concept<br />
<br />
Thank you .<br />
<br />

<pre><code id="code-20-40565898-1">$(window).scroll(function(){

  var scroll = $(window).scrollTop();

  if (scroll &gt; 0 ) {
    $('nav').addClass('scrolled');
  }

  if (scroll &lt;= 0 ) {
    $('nav').removeClass('scrolled');
 }

});</code></pre>
</div>


Thank you
I understand the concept but i have two questions

1- What that exactly mean and do

  var scroll = $(window).scrollTop();

2-   if (scroll > 0 ) {

what 0 refer explain the concept

Thank you .



$(window).scroll(function(){

  var scroll = $(window).scrollTop();

  if (scroll > 0 ) {
    $('nav').addClass('scrolled');
  }

  if (scroll <= 0 ) {
    $('nav').removeClass('scrolled');
 }

});

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<div class="content wysiwyg-content">
Hello i am using bootstrap i am looking for expert to help me implementing a navigation bar that shows in the bottom of the page and make smooth color transition from transparent to blue when scrolling down and stick to the top when it hit top of the browser something similar to this<br />
<br />
<a href="http://themify.me/demo/#theme=parallax" rel="ugc">http://themify.me/demo/#theme=parallax</a><br />
<br />
Thank you.
</div>
</div>


Hello i am using bootstrap i am looking for expert to help me implementing a navigation bar that shows in the bottom of the page and make smooth color transition from transparent to blue when scrolling down and stick to the top when it hit top of the browser something similar to this

http://themify.me/demo/#theme=parallax

Thank you.

Navigation bottom bar that stick on the top when scolling

A scripting language is a programming language that supports scripts, programs written for a special run-time environment that automate the execution of tasks that could alternatively be executed one-by-one by a human operator. Scripting languages are often interpreted (rather than compiled). Primitives are usually the elementary tasks or API calls, and the language allows them to be combined into more complex programs. Environments that can be automated through scripting include software applications, web pages within a web browser, the shells of operating systems (OS), embedded systems, as well as numerous games. A scripting language can be viewed as a domain-specific language for a particular environment; in the case of scripting an application, this is also known as an extension language.

Scripting Languages

Web applications are systems that run in browsers that perform functions normally associated with other client-based programs. One of the most commonly used web applications is email; instead of downloading individual emails to a local machine, the data is shown through a website. Other examples of web applications are collaborative systems like a wiki or an online game.

Web Applications

A web application framework (WAF) is a software framework that is designed to support the development of dynamic websites, web applications, web services and web resources. The framework aims to alleviate the overhead associated with common activities performed in web development. Most common web application frameworks are defined by specific subsets, including ASP.NET, JaveEE, Symfony, ColdFusion Language (CFML), Laravel, jQuery and AngularJS, or for the related languages, including .NET, PHP, JavaScript, Java, Perl, Python, Ruby, C++ and C.