javascript sum row that has same values

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I have a table with a column of id auto increment and the second with random numbers from 1 to 5.

Like:

id | number
1     4
2     5
3     3
4     4
5     1
6     3
7     4
...   ...

the td looks like that

<td>1</td><td id="p4">4</td>
<td>2</td><td id="p5">5</td>

I want to sum all the same numbers to display it into my second table, like:

5 | 4 | 3 | 2 | 1
4  12   6   0   1

JavaScript

$(document).ready(function(){
var p1 = document.getElementById("p1").innerHTML;
// sum the number of p1 we have in to table
});

Any idea?

Posted 16-Apr-13 9:11am

Yafa Su

Updated 16-Apr-13 10:37am

Maciej Los

v2

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Comments

Sergey Alexandrovich Kryukov 16-Apr-13 15:56pm

Why not doing it all in PHP on server side?
—SA

Yafa Su 16-Apr-13 16:05pm

you mean with php and mysql?... the first table was all I can get with sql, I don't know if I can make it better.

Sergey Alexandrovich Kryukov 16-Apr-13 16:33pm

What do you mean "better"? If you get the table from server side, fill in the sum you want as well...
—SA

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Niral Soni · Accepted Answer · 2013-04-17T05:40:00

Even though this approach is not advisable, you should always peform required data manipulation at the database level only (using MySQL in your case). Search for GROUP BY clause and use of SUM() function in MySQL. The query will look something like -

SQL

SELECT SCORE, SUM(SCORE) TOTAL FROM (SELECT ID, SCORE FROM MYTABLE) GROUP BY SCORE;

Anyway, for the JavaScript solution, check this link -
http://jsbin.com/efacem/1/[^]