Question

I have table as follows :

<table>
   <thead>
      <th>PRODUCT</th>
      <th>QUANTITY</th>
      <th>AREA</th>
      <th>PRICE</th>
      <th>TOTAL</th>
   <tr>
      <td id="name">SWEETS</td>
      <td id="qty">10</td>
      <td id="area">250</td>
      <td id="price">16.50</td>
      <td id="total">160.50</td>
   </tr>
   <tr>
      <td id="name"">DRY FOODS</td>
      <td id="qty">5</td>
      <td id="area">100</td>
      <td id="price">10.25</td>
      <td id="total">51.25</td>
   </tr>
   <tr>
      <td id="name">FRESH</td>
      <td id="qty">20</td>
      <td id="area">250</td>
      <td id="price">5</td>
      <td id="total">100</td>
   </tr>
   <tr>
      <td id="name">MEAT</td>
      <td id="qty">10</td>
      <td id="area">250</td>
      <td id="price">15</td>
      <td id="total">150</td>
   </tr>
   <tr>
      <td id="name">FROZEN</td>
      <td id="qty">20</td>
      <td id="area">300</td>
      <td id="price">10</td>
      <td id="total">200</td>
   </tr>
</table>

So, I want to make an array like {area:total} then grouping array values based on area and sum area values.

Like :
AREA 250 : 410.5
AREA 100 : 51.25
AREA 300 : 200

I tried as follow which I got it array but I don’t know how can I grouping the areas ( I used setInterval function because employees can remove or change the area values)

            setInterval(function() {
            var $row = $(this).closest("tr");
            var sasData = [];
            $row.each(function(i) {
                var sasValue = parseFloat($row.find("#area").val());
                var totValue = parseFloat($row.find("#total").val());
                sasData.push({sas:sasValue, tot:totValue});
                console.log(sasData);
            });

            function compressedArray(original) {
                var compressed = [];
            };
        }, 1500)

Could you please show me the way how can we handle this issue?

Answer 1

This JSFiddle should solve your problem. I’ve also fixed your missing thead, your double quote in the DRY FOODS td, and changes id’s to classes:

http://jsfiddle.net/Q9nrf/1/

var areas = {};
$("tr").each(function() {
    var area = $(this).find("td.area").text();
    if (area != "") {
        var total = parseFloat($(this).find("td.total").text());
        if (!areas.hasOwnProperty(area)) {
            areas[area] = 0;            
        }
        areas[area] += total;
    }
});
console.log(areas);