One thing to remember is that selectors are applied in order.
$('td:nth(3):positive') gives you the positive numbers that are in the
fourth cell,
$('td:positive:nth(3)') gives you the fourth positive cell, probably not
what you wantDanny Wachsstock wrote: > > To select specific elements, the cool kids all use custom selectors (not > very well documented, but see > http://docs.jquery.com/Plugins/Authoring#Using_jQuery.extend_to_extend_jQuery_itself > and > http://www.softwareunity.com/sandbox/JQueryMoreSelectors/ ) > > Basically, extend jQuery.expr[':'] with a string that will be evaluated to > true if you want that item selected. > You can use the variables 'a' for the element being considered, 'm[3]' for > whatever was in parentheses in the selector (as in the '2' in 'nth(2)' ), > 'i' for the index of the element being considered, and 'r' for the whole > array of elements. > > In short: > jQuery.extend(jQuery.expr[":"], { > positive : "parseFloat($(a).text()) > 0", > negative : "parseFloat($(a).text()) < 0", > }); > does what you want. > > Use it like: > > $('td:negative').css('color', 'red'); > $('td:positive').css('color', 'green'); > > Danny > > > rolfsf wrote: >> >> Is there a clever way in jQuery to find non-zero data in specific columns >> of a table, and assign them a class based on whether they are positive or >> negative? In plain English, I want to make positive numbers green (or the >> cell bg) and the negative numbers red, but only in certain columns. >> Ideally, I would want to fine tune the range - say, > 1.5 is green and < >> -1.5 is red. I suspect that COL and COLGROUP are not very useful as >> selectors. >> >> Thanks! >> > > -- View this message in context: http://www.nabble.com/adding-a-class-to-positive-and-negative-data-cells-in-a-table-column-tf3240521.html#a9026794 Sent from the JQuery mailing list archive at Nabble.com. _______________________________________________ jQuery mailing list discuss@jquery.com http://jquery.com/discuss/
