JSFiddle - React, Tailwind, and code Playground

HTML

<div class="textForm">
    <input type="radio" name="txtNumber" value="100" checked="checked" />100
    <input type="radio" name="txtNumber" value="200" />200
    <input type="radio" name="txtNumber" value="500" />500
    <input type="radio" name="txtNumber" value="1000" />1000
    <input type="radio" name="txtNumber" value="10000" />10000
    <input type="radio" name="txtNumber" value="other" />other
    <input type="text" name="other_field" id="other_field" onblur="checktext(this);"
    />
</div>
<div class="formText">
        <input type="radio" name="txtSpace" value="RJ" checked="checked"
        />Space 1.
        <br />
        <input type="radio" name="txtSpace" value="SM" />Space 2.
        <br />
    </div>

<h3>Output:</h3>

<div id="output"></div>

JavaScript

$(document).ready(function () {
    console.log("parsed");
    $("input[name='txtNumber']").change(function () {
        console.log("changed");
        if ($("input[name='txtNumber']:checked").val() == '100') $("#output").text("Changed to 100");
        else if ($("input[name='txtNumber']:checked").val() == '200') $("#output").text("Changed to 200");
        else if ($("input[name='txtNumber']:checked").val() == '500') $("#output").text("Changed to 500");
        else if ($("input[name='txtNumber']:checked").val() == '1000') $("#output").text("Changed to 1000");
        else if ($("input[name='txtNumber']:checked").val() == '10000') $("#output").text("Changed to 10000");
        else if($("input[name='txtNumber']:checked").val() == 'other')
        $("#output").text("Changed to Other");
    });
});