Is there a better way to write this navigation statement?

I know this is a redundant way to write these rules so I'm wondering if an开发者_JAVA技巧yone knows a better way to write it. Thanks!

$('.nav li a').eq(0).click(function() {

    $('.nav li a').eq(0).addClass("active");
    $('.nav li a').eq(1).removeClass("active"); 
    $('.nav li a').eq(2).removeClass("active");
    $('.nav li a').eq(3).removeClass("active");

});
$('.nav li a').eq(1).click(function() {

    $('.nav li a').eq(0).removeClass("active");
    $('.nav li a').eq(1).addClass("active");    
    $('.nav li a').eq(2).removeClass("active");
    $('.nav li a').eq(3).removeClass("active");

});
$('.nav li a').eq(2).click(function() {

    $('.nav li a').eq(0).removeClass("active");
    $('.nav li a').eq(1).removeClass("active"); 
    $('.nav li a').eq(2).addClass("active");
    $('.nav li a').eq(3).removeClass("active");

});
$('.nav li a').eq(3).click(function() {

    $('.nav li a').eq(0).removeClass("active");
    $('.nav li a').eq(1).removeClass("active"); 
    $('.nav li a').eq(2).removeClass("active");
    $('.nav li a').eq(3).addClass("active");

});

I'd move the class to the <li>, like this:

$('.nav li').click(function() {
  $(this).addClass("active").siblings().removeClass("active");
});

If you just changing the styling to match, for example:

li.active a { /* styles */ }

...then it's much simpler overall to have the click handler on the <li> elements, since those are the set you're dealing with. There's also the more efficient .delegate() method:

$('.nav').delegate('li', 'click', function() {
  $(this).addClass("active").siblings().removeClass("active");
});

You have a lot of code which can be condensed. Try this:

$('.nav li a').click(function()
{
  $('.nav li a').removeClass('active');
  $(this).addClass('active');
});

$('.nav li a').bind('click', function() {
    $('.nav li a').removeClass('active');
    $(this).addClass('active')
});

$('.nav li a').click(function() {
    $('.nav li a.active').removeClass("active"); 
    $(this).addClass("active"); 
});

$('.nav li a').click(function() {
  $('.nav li a').removeClass('active');
  $(this).addClass('active');
});

Removes the active class from each a and then adds it to the clicked element.

I'm making some assumptions about what your document looks like, but this is what I might do:

$('.nav li a').click(function() {
    $('.nav li a').removeClass('active');
    $(this).addClass('active');
});