JSFiddle - React, Tailwind, and code Playground

HTML

<input type="radio" name="T3-ok1-9999" class="activa" id="T3-ok1-9999" value="1"/>
<label for="T3-ok1-9999">Desactiva</label>
<input type="radio" name="T3-ok1-9999" class="activa" id="T3-ok1-9991" value="2"/>
<label for="T3-ok1-9991">Activa</label>

<input name="T3-fw3-808" type="text" class="meta" id="T3-fw3-808" size="5" disabled="disabled" />
<input name="T3-fw4-809" type="text" class="meta" id="T3-fw4-809" size="5" disabled="disabled" />

JavaScript

$(function(){
    $(".activa").click(function(){
        var v = $(this).val();
        if(v==2){
            $(".meta").removeAttr('disabled');
        }else{
            $(".meta").attr('disabled','disabled')
        }
    })
})