JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<div>Write the numbers to compare!</div>
<h4>List one</h4>
<div>
  <input class="row_a" value="1">
  <input class="row_a" value="2">
  <input class="row_a" value="3">
  <input class="row_a" value="4">
</div>
<h4>List two</h4>
<div>
  <input class="row_b" value="3">
  <input class="row_b" value="4">
  <input class="row_b" value="5">
  <input class="row_b" value="6">
</div>
<p class="match"></p>
<button class="action">match</button>

JavaScript

$(".action").click(function() {
  var x = $(".row_a").map(function() {
    return this.value;
  }).get();

  var y = $(".row_b").map(function() {
    return this.value;
  }).get();

  var arrays = [
    [1, 2, 3, 4],
    [3, 4, 5, 6] 
  ];

  var result = arrays.shift().reduce(function(res, v) {
    if (res.indexOf(v) === -1 && arrays.every(function(a) {
        return a.indexOf(v) !== -1;
      })) res.push(v);
    return res;
  }, []);

  $(".match").append("<div>Numbers " + result + " match in both lists</div>");
});