Open External Links on New Tab

footer.php

To open everything in new window, this code can be added in header.php:
<base target="_blank" >


Apply to post external links
To open all external links in the post in a new tab, follow these steps:
<script type="text/javascript">// <![CDATA[
jQuery(document).ready(function($){
    $('.post')
      .find('a[href]:not([href^="https://joychetry.com"]):not([href^="#"]):not([href^="/"])').attr( 'target', '_blank' );
});
// ]]></script>


Apply to all external links
If you instead want to open all the external links (in content, sidebar, header, footer, etc.) in a new tab, use this code:
<script type="text/javascript">// <![CDATA[
jQuery(document).ready(function($){
    $('a[href]:not([href^="https://joychetry.com"]):not([href^="#"]):not([href^="/"])').attr( 'target', '_blank' );
});
// ]]></script>