JSFiddle - React, Tailwind, and code Playground

HTML

<table>
    <tr>
        <td>
            <input type="text" id="txtPrev" />
        </td>
        <td>
            <input type="text" id="txtNext" />
        </td>
    </tr>
</table>

JavaScript

var flag = 0;
$("input").keypress(function(){
    var target = $(this).parent("td").next().children("input");
    if(flag%2)
        target.css("background-color", "blue");
    else
        target.css("background-color", "green");
    ++flag;
});