JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://cdnjs.cloudflare.com/ajax/libs/mathjs/1.2.0/math.min.js"></script>
<input id="nrs"  value="14,92,34,78">

<div id="show"></div>

JavaScript

IaNr = $.map($("#nrs").val().split(','),
    function(val, idx) { 
         return parseInt(val, 10);
    });

DoGcd=math.gcd(IaNr,true);
$("#show").html(DoGcd);