JSFiddle - React, Tailwind, and code Playground

HTML

<input value="one">
<input value="two">
<input type="button" id="clear" value="Clear">

JavaScript

var clearButton = document.getElementById("clear");
var previousActiveElement = null;

clearButton.onmousedown = function() {
    previousActiveElement = document.activeElement;
};

clearButton.onclick = function() {
    if (previousActiveElement && previousActiveElement != this) {
        previousActiveElement.value = "";
    }
};