JSFiddle - React, Tailwind, and code Playground

by Ankit Patidar

HTML

<input type="text" onKeyUp="validateDec(key)">

JavaScript

function validateDec(key) {
    console.log("Hi");
    //getting key code of pressed key
    var keycode = (key.which) ? key.which : key.keyCode;
    //comparing pressed keycodes
    if (!(keycode == 8 || keycode == 46) && (keycode < 48 || keycode > 57)) {
        return false;
    }
    else {
        var parts = key.srcElement.value.split('.');
        if (parts.length > 1 && keycode == 46)
            return false;
        return true;
    }
}