I have an html table like that :
time | time_diff
12:01|
12:21|
12:31|
how could I calculate time_diff using Javascript (with or without jQuery) so my table looks like :
time | time_diff
12:01| 20
12:21| 10
12:31|
I'm basically wondering how I can achieve multi lines operations on an html table?
Maybe something like this:
$('table tbody tr').each(function () {
var $row = $(this),
$nextRow = $row.next();
if ($nextRow.length) {
this.cells[1].innerHTML = timeDiff($nextRow.find('td').text(), $row.find('td').text());
}
});
function timeDiff(t1, t2) {
t1 = t1.split(':');
t2 = t2.split(':');
var diff = (t1[0] * 60 + +t1[1]) - (t2[0] * 60 + +t2[1]),
hours = Math.floor(diff / 60),
minutes = (diff - hours * 60) + '';
return hours + ':' + (minutes.length == 1 ? '0' + minutes : minutes);
}