hasClass « addClass « jQuery Q&A

1. If hasClass then addClass to parent    stackoverflow.com

Original post: Why doesn't this simple script work?

if ($('#navigation > ul > li > ul > li > a').hasClass('.active')) {
    $(this).parent().parent().parent().addClass(".active");
}

if ($('#content h1').hasClass('aktiv')) {
  ...

2. each() within each() and addClass within hasClass somehow doesn't work    stackoverflow.com

Yet another head scratcher, this one! Why does everything in the below work, except for the ONE addClass() line?

var arr = ['1000','1001','1002','1003','1004','1005'],
    allarr = 0;

$.each(arr, function(i, value) {
 ...

3. jQuery hasClass / addClass Issue    stackoverflow.com

This is what I have. The li has a class of current but for some reason it's not adding the class.

if (jQuery("#sidebar li").hasClass("current")) {
        ...