Change the link inside of an embed on each matching anchor link

I'm working with a very limited system that doesn't allow for direct HTML editing so anything I want to add is only capable through Javascript / JQuery (which I'm still very new at).

What I'm trying to do is as follows:

Identify links with a matching pattern
Have its href value stored
Inject HTML code to display an iframe
Replace the video href the iframe references to the href stored earlier
Loop for every matching href on the page

So far, I've been able to get the iframe to display with the correct video, however, if I add multiple matching links - but to different videos/hrefs - the result is the exact same embedded video repeatedly.

Here's my code so far:

  $('a[href*=\"https://app.application.io/recordings/\"]').each(function(index,item){
  var applicationEmbed = $(this).attr("href");
  var applicationiFrame = '<div class=\"video-embed\" style=\"position: relative; padding-bottom: 50.5%; height: 0;\"><iframe src=\"' + applicationEmbed + '/embed\" frameborder=\"0\" webkitallowfullscreen mozallowfullscreen allowfullscreen style=\"position: absolute; top: 0; left: 0; width: 100%; height: 100%;\"></iframe></div>'
    $("a[href*=\"https://app.application.io/recordings/\"]").replaceWith(applicationiFrame);
    });

Any tips?

Solution

It's because your last line is telling the script to replace every instance of the link pattern $("a[href*=\"https://app.application.io/recordings/\"]") with the single value replaceWith(applicationiFrame), which is making them all the same. Here's an alternate approach an note how I used template literals to help with readability.

$('a[href*=\"https://app.application.io/recordings/\"]').each(function(index, item) {
  let applicationEmbed = $(item).attr("href");
  let applicationiFrame = `
  <div class="video-embed" style="position: relative; padding-bottom: 50.5%; height: 0;">
  <iframe src="${applicationEmbed}/embed" frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen style="position: absolute; top: 0; left: 0; width: 100%; height: 100%;"></iframe>
  </div>`
  $(item).before(applicationiFrame).remove()
});

.video-embed {
  border: 1px solid #666;
  background: #dedede;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<a href="https://app.application.io/recordings/1">Test link</a><br />
<a href="https://app.application.io/recordings/2">Test link</a><br />
<a href="https://app.application.io/recordings/3">Test link</a><br />
<a href="https://app.application.io/recordings/4">Test link</a><br />