JSFiddle - React, Tailwind, and code Playground

by lustre

HTML

<a href="http://www.northamptonpartnershiphomes.org.uk/sites/default/files/JUNE%202015%20performance%20data%20YTD.pdf" target="_blank">PDF</a>
<br />
<a href="http://www.northamptonpartnershiphomes.org.uk/" target="_blank">Not a PDF</a>

JavaScript

$('a').click(function(){
    var addressValue = $(this).attr("href");   
    var lastThree = addressValue.substr(addressValue.length - 3);
    if (lastThree == "pdf"){
     	ga('send','event','downloads',addressValue);
    }
});