JSFiddle - React, Tailwind, and code Playground

HTML

<input type="checkbox" name="" /><input type="text" name="" />
<input type="checkbox" name="" /><input type="text" name="" />
<input type="checkbox" name="" /><input type="text" name="" />
<input type="checkbox" name="" /><input type="text" name="" />
<input type="checkbox" name="" /><input type="text" name="" />

JavaScript

$(':checkbox').change(function(){
    if ($(this).is(':checked')) {
        $(this).next().attr('disabled','disabled');
    } else {
        $(this).next().removeAttr('disabled');
    }
})