Change Iframe Src Without Page Update

Check out my HTML code: Copy

Step 2: Update your buttons...

<button type="button" onclick="ChangeSource(1);">Change to video 1</button>

Step 3: Include this function...

function ChangeSource(Button){
if(Button==1){FrameId.src='URL 1';} else 
if(Button==2){FrameId.src='URL 2';} else 
if(Button==3){FrameId.src='URL 3';} else 
if(Button==4){FrameId.src='URL 4';}
}

Solution 2:

I would suggest using 1 function instead of 4, and add your links as data inside of each button. You could also add those links dynamically at runtime. I used a placeholder video from youtube on a demo for button 1, and as you see you can switch out your iframe src using the following jQuery function.

$( document ).ready(function() {
  $('.changer').click(function(e){
    changeIframe(e);
  })
})

function changeIframe(e) {
  var link = $(e.currentTarget).data('link');
  $('.embed-responsive-item').attr('src',link);
  alert('link is now '+link);
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.min.css" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
<!-- Button trigger modal -->
<button type="button" class="btn btn-primary btn-lg" data-toggle="modal" data-target="#myModal">Launch demo modal</button>
<div>
  <button class="changer" type="button" data-link="https://www.youtube.com/watch?v=ScMzIvxBSi4">Change to video 1</button>
  <button class="changer" type="button" data-link="">Change to video 2</button>
  <button class="changer" type="button" data-link="">Change to video 3</button>
  <button class="changer" type="button" data-link="">Change to video 4</button>
</div>

<div id="myModal" class="modal fade" role="dialog" tabindex='-1'>
<div class="modal-dialog">
    <div class="modal-content">
    <div class="modal-header">
                <p class="modal-title">SECRETS OF SUPERIOR CUSTOMER SERVICE (July 22, 2016)</p>
         </div>
        <div class="modal-body">
            <div class="embed-responsive embed-responsive-16by9">
                <iframe class="embed-responsive-item" src="http://chishare.cc/embed/2107778410/" allowfullscreen="" width="640" height="360" frameborder="0"></iframe>
             </div>
         </div>
         <div class="modal-footer">
             <button type="button" class="btn btn-default" data-dismiss="modal">Fechar</button>
         </div>

    </div>
</div>