JSFiddle - React, Tailwind, and code Playground

HTML

<p>Trying to round 1.005. Result should be 1.01</p>
<p>
    <div>var numberToRound = 1.005;</div>
    <div>numberToRound.round(2);</div>
    <div class="result1">Result: </div>
</p>

CSS

.result1{
    color: green;
}

JavaScript

Number.prototype.round = function(decimals) {
    return Number((Math.round(this + "e" + decimals)  + "e-" + decimals));
}
var numberToRound = 1.005;
$('.result1').append(numberToRound.round(2));