JSFiddle - React, Tailwind, and code Playground

HTML

<input id="myTextBox" >

JavaScript

function keyupMaxLimit(obj, maxlen) {
    if (parseInt(obj.value.length) > maxlen) {
        $(obj).val($(obj).val().substr(0,maxlen));
    }
}

$(document).on("keyup", "#myTextBox", function () {
    keyupMaxLimit(this,5);
    console.log("SO OTHER STUFF");
});