JSFiddle - React, Tailwind, and code Playground

by rgthree

HTML

<input id="i" />

JavaScript

var isKeyDown = false;
var keyDownVal = '';
$('#i').keydown(function(e){
    if(!isKeyDown){
        isKeyDown = true;
        keyDownVal = $(this).val();
    }
});
$('#i').keyup(function(e){
    console.log(e)
    $(this).val($(this).val().replace(/\D/gi,''));
});