JSFiddle - React, Tailwind, and code Playground

by callmepc

HTML

<input type="text" id="txtboxToFilter" />

JavaScript

$("#txtboxToFilter").keydown(function(event) {
        // Allow only backspace and delete
        if ( event.keyCode == 46 || event.keyCode == 8 ) {
            // let it happen, don't do anything
        }
        else {
            // Ensure that it is a number and stop the keypress
            if ((event.keyCode < 48 || event.keyCode > 57) && (event.keyCode < 96 || event.keyCode > 105 )) {
                event.preventDefault(); 
            }   
            else 
            {
                                alert("PLZ NUMERICS ONLY");
            }
        }
    });