Add print button to flipbook

This customization allows user to add an extra print button that prints the PDF file used by the flipbook.

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JavaScript Code:

<script src="https://printjs-4de6.kxcdn.com/print.min.js"></script>
<script>
  
  jQuery(function($){

    var customButtonFunction = function(){
      //Custom button code goes here
      var flipbook = this;
      printJS({printable:flipbook.options.source , type:'pdf', showModal:true})
    };

    var alternateDownloadFile = "https://dearflip.com/wp-content/uploads/2020/03/foee_hbf_meatatlas_jan2014.pdf";
    
    //We add the function in Global Defaults so that all flipbooks in the page act same.
    DFLIP.defaults.onReady = function(flipbook) {

      var customButton = jQuery('<div class="df-ui-btn ti-printer df-ui-custom-print-button" title="Print"></div>');
      customButton.on("click",customButtonFunction.bind(flipbook));
      //if you want to insert in some other place.. find the button and then insert before that button
       flipbook.ui.share.after(customButton);
    };

  });
  
</script>

CSS StyleSheet:

<link rel="stylesheet" type="text/css" href="https://printjs-4de6.kxcdn.com/print.min.css">

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For WordPress, please read on 
How to add Custom Code to WordPress Pages