JSFiddle - React, Tailwind, and code Playground

by htoniv

HTML

<input type="text">

JavaScript

$('input').on('keypress', function (event) {
    var regex = new RegExp("^[a-zA-Z0-9]$");
    var key = String.fromCharCode(!event.charCode ? event.which : event.charCode);
    if (!regex.test(key)) {
       return false;
    }
});