我使用下面的代码将输入的两个值相加，然后将其显示为结果。

$(document).ready(function(){
    var val1 = +$(".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);
});

这工作正常，但只是输出一个标准的数字格式，即9,000我想让它显示9,000美元或只是9,000。
我使用下面的代码，它允许我有一个输入框与data-type="currency"和显示罚款，即。九千块
但是当我试图将它添加到我的“结果”输入框中时，它只是显示为标准数字，是否有将我的val1*val2函数与输入输出合并的方法？

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