JSFiddle - React, Tailwind, and code Playground

HTML

<form name="imageForm" class="form1">
  <table>
  <tr>
    <td>
      <input onclick="displayImage();" type=button value="Display Random Image">
    </td>
  </tr>
  <tr>
    <td>
      <img id="img1" src="" name="canvas" />
    </td>


    <td>
      <img src="" name="canvas1" />
    </td>


    <td>
      <img src="" name="canvas2" />
    </td>
  </tr>
  </table>
</form>

JavaScript

var imagesArray = [
       "http://img/img_0.jpg"
     , "http://img/img_1.jpg"
     , "http://img/img_2.jpg"
     , "http://img/img_3.jpg"
     , "http://img/img_4.jpg"
     , "http://img/img_5.jpg"

    ];
    var num = Math.floor(Math.random() * 6); // 0...6
    var img1=document.getElementById("img1");
    img1.src="http://img/img_"+num+".jpg";