JSFiddle - React, Tailwind, and code Playground

HTML

<input type="text" class="myTexbox" />

JavaScript

//Required: User can enter only two places after . or , 

//Cannot repeat comma or decimal once inserted. Both could not come together as both are interchangable

//Required: User can use paste i.e Ctrl+v but could not enter anything expect 0 - 9 with Single . or , with two places after it
//Required: Should work in IE 10 +
//Optional: If user enter some other button a message flash next to textbox

$(document).ready(function() {
    $('.myTexbox').keypress(function (event) {
        return isDecimalNumber(event, this)
    });
});

function isDecimalNumber(eve, element) {
        var charCode = (eve.which) ? eve.which : event.keyCode
        if ((
            (charCode != 8) //For Backspace Active
            &&
            (charCode != 44 || $(element).val().indexOf(',') != -1)
            //For comma
            &&
            (charCode != 46 || $(element).val().indexOf('.') != -1)         &&          
            (charCode < 48 || charCode > 57)) 
            ||
            $(element).val().toString().match("\\.[0-9]{2,}$"))
            return false;
     return true; 
}