technicaldogsbody/index.html

## index.html
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>Download PDF JQuery</title>
</head>
<body>

  <a target="_blank" href="sample.pdf">Donec non enim</a><br />
  <a download href="sample.pdf">Donec non enim</a><br />
  <a download="download.pdf" href="sample.pdf">Donec non enim</a><br />
  <a target="download" href="sample.pdf">Donec non enim</a><br />
  <a href="sample.pdf">Donec non enim</a><br />

</body>
<script src="https://code.jquery.com/jquery-2.2.4.js"></script>
<script src="script.js"></script>
</html>

## sample.pdf

      
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              sample.pdf
            
          
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## script.js
$(function() {
    $("a[target='download']").each(function () {
        $(this).removeAttr("target");
        $(this).attr("download", "");
    });
});
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width">
	<title>Download PDF JQuery</title>
	</head>
	<body>

	<a target="_blank" href="sample.pdf">Donec non enim</a><br />
	<a download href="sample.pdf">Donec non enim</a><br />
	<a download="download.pdf" href="sample.pdf">Donec non enim</a><br />
	<a target="download" href="sample.pdf">Donec non enim</a><br />
	<a href="sample.pdf">Donec non enim</a><br />

	</body>
	<script src="https://code.jquery.com/jquery-2.2.4.js"></script>
	<script src="script.js"></script>
	</html>
	$(function() {
	$("a[target='download']").each(function () {
	$(this).removeAttr("target");
	$(this).attr("download", "");
	});
	});