javascript - Number on keyup add comma in INR standard -

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i trying remove text after numbers typed , add decimal

i have multiple input type="text" on keypress adding comma in inr (indian rupee) standard when type more 3 numbers entire value removed , '0' added. code not allowing decimal .00 number should. doing wrong?

js fiddle

html:

<input name="txtmsexmarcardfee" type="number" id="txtmsexmarcardfee" class="stylednumber"> <input name="txtmsexmarcardfee1" type="number" id="txtmsexmarcardfee1" class="stylednumber"> <input name="txtmsexmarcardfee2" type="number" id="txtmsexmarcardfee2" class="stylednumber">

js:

$('input.stylednumber').keyup(function(){     var x=$(this).val();     x=x.tostring();     var afterpoint = '';     if(x.indexof('.') > 0)     afterpoint = x.substring(x.indexof('.'),x.length);     x = math.floor(x);     x=x.tostring();     var lastthree = x.substring(x.length-3);     var othernumbers = x.substring(0,x.length-3);     if(othernumbers != '')     lastthree = ',' + lastthree;     var res = othernumbers.replace(/\b(?=(\d{2})+(?!\d))/g, ",") + lastthree + afterpoint;       $(this).val(res );  });

this requires cleanup input before pass through regex

string.prototype.replaceall = function(search, replacement) {    var target = this;    return target.replace(new regexp(search, 'g'), replacement);  };    $('input.stylednumber').keyup(function() {    var input = $(this).val().replaceall(',', '');    if (input.length < 1)      $(this).val('0.00');    else {      var val = parsefloat(input);      var formatted = inrformat(input);      if (formatted.indexof('.') > 0) {        var split = formatted.split('.');        formatted = split[0] + '.' + split[1].substring(0, 2);      }      $(this).val(formatted);    }  });    function inrformat(val) {    var x = val;    x = x.tostring();    var afterpoint = '';    if (x.indexof('.') > 0)      afterpoint = x.substring(x.indexof('.'), x.length);    x = math.floor(x);    x = x.tostring();    var lastthree = x.substring(x.length - 3);    var othernumbers = x.substring(0, x.length - 3);    if (othernumbers != '')      lastthree = ',' + lastthree;    var res = othernumbers.replace(/\b(?=(\d{2})+(?!\d))/g, ",") + lastthree + afterpoint;    return res;  }
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>  <input name="txtmsexmarcardfee" type="text" id="txtmsexmarcardfee" class="stylednumber">  <input name="txtmsexmarcardfee1" type="number" id="txtmsexmarcardfee1" class="stylednumber">  <input name="txtmsexmarcardfee2" type="number" id="txtmsexmarcardfee2" class="stylednumber">


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