jquery: get mouse click if inside a div or not

Question

i have this HTML page

a
b
c
d


        
      

Answer 1

$("body > div").click(function() {
    if ($(this).attr("id") == "in_or_out") {
        // inside
    } else {
        // not inside
    }
});

EDIT: just learned, that there is a negate:

$("body > div:not(#in_or_out)").click(function(e) {
    // not inside
});