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JS input sum output as currency format?

I use the following code to add 2 values of an input and then I display it as the result.

$(document).ready(function(){
    var val1 = +$(".value1").val();
    var val2 = +$(".value2").val();
    $("#result").val(val1*val2);
});
$('.input').blur(function(){
    var val1 = +$(".value1").val();
    var val2 = +$(".value2").val();
    $("#result").val(val1*val2);
});

This works fine, but just outputs a standard number format ie 9000 I want to make it display $9,000 or just 9,000.

I am using the below code which allows me to have an input box with data-type="currency" and that displays fine ie $9,000.

But when I try to add it to my "result" input box it is just displaying as standard numbers is there anyway of merging my val1*val2 function with the input output?

$("input[data-type='currency']").on({
    keyup: function() {
      formatCurrency($(this));
    },
    blur: function() { 
      formatCurrency($(this), "blur");
    }
});


function formatNumber(n) {
  // format number 1000000 to 1,234,567
  return n.replace(/\D/g, "").replace(/\B(?=(\d{3})+(?!\d))/g, ",")
}


function formatCurrency(input, blur) {
  // appends $ to value, validates decimal side
  // and puts cursor back in right position.
  
  // get input value
  var input_val = input.val();
  
  // don't validate empty input
  if (input_val === "") { return; }
  
  // original length
  var original_len = input_val.length;

  // initial caret position 
  var caret_pos = input.prop("selectionStart");
    
  // check for decimal
  if (input_val.indexOf(".") >= 0) {

    // get position of first decimal
    // this prevents multiple decimals from
    // being entered
    var decimal_pos = input_val.indexOf(".");

    // split number by decimal point
    var left_side = input_val.substring(0, decimal_pos);
    var right_side = input_val.substring(decimal_pos);

    // add commas to left side of number
    left_side = formatNumber(left_side);

    // validate right side
    right_side = formatNumber(right_side);
    
    // On blur make sure 2 numbers after decimal
    if (blur === "blur") {
      right_side += "00";
    }
    
    // Limit decimal to only 2 digits
    right_side = right_side.substring(0, 2);

    // join number by .
    input_val = "$" + left_side + "." + right_side;

  } else {
    // no decimal entered
    // add commas to number
    // remove all non-digits
    input_val = formatNumber(input_val);
    input_val = "$" + input_val;
    
    // final formatting
    if (blur === "blur") {
      input_val += ".00";
    }
  }
  
  // send updated string to input
  input.val(input_val);

  // put caret back in the right position
  var updated_len = input_val.length;
  caret_pos = updated_len - original_len + caret_pos;
  input[0].setSelectionRange(caret_pos, caret_pos);
}

Just use toLocaleString with style: "currency" and other option's.

Example:

 //Get your value, I hard coded it for example var val1 = "300"; //+$(".value1").val(); var val2 = "30"; //+$(".value2").val(); var result = val1 * val2; var myFormat = { style: "currency", currency: "USD", currencyDisplay: "symbol", minimumFractionDigits: 0 } $("#result").val(result.toLocaleString("en-US", myFormat));
 <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <input type='text' id='result' />

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