JSFiddle - React, Tailwind, and code Playground

HTML

<script
  src="https://code.jquery.com/jquery-1.12.4.min.js"
  integrity="sha256-ZosEbRLbNQzLpnKIkEdrPv7lOy9C27hHQ+Xp8a4MxAQ="
  crossorigin="anonymous"></script>
<textarea id="dText"></textarea>
<table id="dJson"></table>
<button id="idvar">Click</button>

JavaScript

var json = '[{"tag":"a1","relevance":0.5},{"tag":"a2","relevance":0.3},{"tag":"c3","relevance":0.2}]';
$("#idvar").click(function(){
  var d1 = document.getElementById("dText");
  var d2 = document.getElementById("dJson");
  var mytext = d1.textContent;
  alert(mytext);
  var data = JSON.parse(json);
  var transform = {'<>': 'tr','html':'<td>${tag}</td><td>${relevance}</td>'};
  var html = '<tr><th>Tag</th><th>Relevance</th></tr>';
  for(var i=0; i<data.length; i++){
    html +=
      '<tr>' +
        '<td>' +
          data[i].tag +
        '</td>' +
        '<td>' +
          data[i].relevance +
        '</td>' +
      '</tr>'
    ;
  }
  d2.innerHTML = html;
});