JSFiddle - React, Tailwind, and code Playground
HTML
<input step="0.1" class="number" name="SupplyAirFlow" value="" pattern=".{1,}" type="number">
JavaScript
document.querySelector("input.number").onkeydown = function() {
};
<input step="0.1" class="number" name="SupplyAirFlow" value="" pattern=".{1,}" type="number">
document.querySelector("input.number").onkeydown = function() {
};