JSFiddle - React, Tailwind, and code Playground

HTML

<input name="+" type="button" id="+" onclick="addInput()" value="+" label="+" />
<input name="-" type="button" id="-" onclick="subtractInput()" value="-" label="-" />

<span id="response"><br></span>

JavaScript

var countBox = 0;
var boxName = "SomeId";

var addInput = function(){
    alert(boxName+countBox);
    var br = document.createElement("br");
    var input = document.createElement("input");
    input.id=boxName+countBox;
    input.value=boxName;
    document.getElementById("response").appendChild(input);
    document.getElementById("response").appendChild(br);
    countBox++;
}

var subtractInput = function(){
    countBox--;
    alert(boxName+countBox);
    document.getElementById("response").removeChild(document.getElementById(boxName+(countBox)));
    document.getElementById("response").removeChild(document.getElementById('response').getElementsByTagName('br')[countBox]);
}