Jquery with tables sum row input

Question

i have a problem with the code below, I want to sum alla input values for a tr and that works good except that it show the row values on all rows instead of the changed one. Code below:

   $(".txtMult input").keyup(multInputs);

  function getNum($val) {
     if (isNaN($val)) {
       return 0;
     } else {
         return $val;
     }
  }
   function multInputs() {
       var mult = 0;
       var $total = 0;
       // for each row:
       $("tr.txtMult").each(function () {
           var $total = 0;
           $("input.val").each(function () {
           // get the values from this row:
           $total = +parseFloat($total)+getNum(parseFloat($(this).val()));
           });
           $('.multTotal',this).text($total);
       });
   }

any suggestions ?

Example on JSfiddle

Answer 1

that it show the row values on all rows instead of the changed one

The way I understand this statement is you only want to show the Total of the rows that have changed or have values, then you can just add an if/else statement like:

      function multInputs() {
           var mult = 0;
           // for each row:
           $("tr.txtMult").each(function () {
               // get the values from this row:
               var $val1 = $('.val1', this).val();
               var $val2 = $('.val2', this).val();
               var $total = ($val1 * 1) * ($val2 * 1)

               if ( $total != 0 && !isNaN($total) ) {
                   $('.multTotal',this).text($total);
                   mult += $total;
               } else $('.multTotal',this).text("");
           });
           $("#grandTotal").text(mult);
       }

Here is the fiddle: http://jsfiddle.net/5FpWC/540/

I also added a condition to only show if valid number - !isNaN($total)

---

Update:

Regarding the new update on this fiddle: http://jsfiddle.net/5FpWC/541/

The error is in $("input.val"), You are selecting all the input with class val on all trs.

Yous should use $(this).find("input.val") to specify that you only want the input.val on the current tr on the loop.

$("tr.txtMult").each(function () {
      var $total = 0;
     $(this).find("input.val").each(function () {
         // get the values from this row:
         $total = +parseFloat($total)+getNum(parseFloat($(this).val()));
     });
     $('.multTotal',this).text($total);
});

Fiddle: http://jsfiddle.net/5FpWC/543/