jquery - Add css class to a td tag using javascript -

i'm trying make timetable moodle in form of greasemonkey script.

the idea highlight subject current hour, can't find working way of doing it.

i'm injecting css page, , using jquery add injected css class target td.

this css code injected page header:

.current_class {background-color:green};

and javascript code used add class td:

var cell = $("#timetable_table").find("tr").eq(current+1).find("td").eq(date.getday());

i know cell correct td because can cell.text("foo") , correct cell modified, when do:

cell.addclass("current_class");

the table stays same.

i don't have way, want dynamically change background on td tag, don't mind using other methods.

thanks.

first suggest change this:

var cell = document.getelementbyid('timetable_table').rows(current+1).cells(date.getday());

and:

cell.classname += (cell.classname ? " " : "")+"current_class";

the probable cause of issue have background-color being defined elsewhere greater specificity. try using css selector:

#timetable_table tr>td.current_class{background-color:green};

that should specific enough win.

New Mian