JSFiddle - React, Tailwind, and code Playground

by Elak

HTML

<div class="Row">
    test <input name="choice" class="CheckBox" type="checkbox"/> <input type="text" class="TextBox"/>
</div>
<div class="Row">
    test <input name="choice" class="CheckBox" type="checkbox"/> <input type="text" class="TextBox"/>
</div>
<div class="Row">
    test <input name="choice" class="CheckBox" type="checkbox"/> <input type="text" class="TextBox"/>
</div>
<div class="Row">
    test <input name="choice" class="CheckBox" type="checkbox"/> <input type="text" class="TextBox"/>
</div>

JavaScript

$(".CheckBox").change(function(){
    var ctx = $(this).parent();
    var myTextBox = $(".TextBox", ctx);
    
    $(myTextBox).val("test");
});