JSFiddle - React, Tailwind, and code Playground

HTML

<button id="minus">-</button>
 <input id="result" type="button" name="button1" value="0"/>
<button id="plus">+</button>

JavaScript

var minus = document.getElementById("minus");
var plus = document.getElementById("plus");
var result = document.getElementById("result");
var counter= ""

plus.addEventListener('click', function(){
		if(result.value){
    	counter++;
      result.value = counter;
    }	
	});
  
minus.addEventListener('click', function(){
		 if(result.value > 0){
    	counter--;
      result.value = counter;
    }  
	});