小编ash*_*win的帖子

var    str ="";
var counter=0;
$(document).ready(function() {

  $(".amount, .penalty").change(function() {
    var total = 0;
    var amount = parseInt($(".amount").val()) || 0;
    console.log("amount: "+amount);
    var penalty = parseInt($(".penalty").val()) || 0;
    console.log("penalty: "+penalty);
    
    total = amount + penalty;
    console.log(total);
    $("#total").html(total);
  });

   $(".add").click(function() {
       alert();
		 
          
       str +="<div class='form-group row' >"
      +"<label class='col-xs-3 col-form-label mr-2'>Reason</label>"
      +"<div class='col-xs-9'>"
       + "<input type='text' class='form-control' id='reason"+counter+"' name='reason'>"
      +"</div>"


      +"<label class='col-xs-3 col-form-label mr-2'>Amount</label>"
      +"<div class='col-xs-9'>"
       + "<input type='text' class='form-control amount' id='amount"+counter+"' name='amount'>"
      +"</div>"

     + "<label class='col-xs-3 col-form-label mr-2'>Penalty</label>"
     +"<div class='col-xs-9'>" …