JSFiddle - React, Tailwind, and code Playground

by Rapha Souza

HTML

<script src="https://code.jquery.com/jquery-3.4.1.slim.js"></script>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.js"></script>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.css">
<!DOCTYPE html>
<html>
  
<head>
    <title>
        JavaScript |
      Add a key/value pair to JSON object
    </title>
</head>
  
<body style="text-align:center;">
  
    <h1 style="color:green;">  
            GeeksForGeeks  
        </h1>
  
    <p id="GFG_up"
       style=" font-weight: bold">
    </p>
  
    <button onclick="Geeks()">
        Click to add
    </button>
  
    <p id="GFG_down" 
       style="color:green;
              font-weight: bold" ;>
    </p>
  
    <script>
        var GFG_p = {
            prop_1: "val_1",
            prop_2: "val_2",
            prop_3: "val_3"
        };
        var p_up = 
            document.getElementById("GFG_up");
        var p_down = 
            document.getElementById("GFG_down");
        p_up.innerHTML = 
          JSON.stringify(GFG_p);
  
        function Geeks() {
            GFG_p.prop_4 = "val_4";
            p_down.innerHTML = JSON.stringify(GFG_p);
        }
    </script>
</body>
  
</html>

CSS

.row {
  background: #f8f9fa;
  margin-top: 20px;
}

.col {
  border: solid 1px #6c757d;
  padding: 10px;
}