JSFiddle - React, Tailwind, and code Playground

by Jedaias Rodrigues

HTML

<input type="text" id="calculator" />
<div id="result"></div>

JavaScript

var input = document.getElementById('calculator');
var result = document.getElementById('result');
input.addEventListener('keyup', calcular);
function calcular(){
    //var conta = eval(this.value);
    var conta = new Function("return " + this.value);
		var resultado = conta();
    
    result.innerHTML = resultado;
}