jQuery check if it is clicked or not

You could use .data():

$("#element").click(function(){
    $(this).data('clicked', true);
});

and then check it with:

if($('#element').data('clicked')) {
    alert('yes');
}

To get a better answer you need to provide more information.

Update:

Based on your comment, I understand you want something like:

$("#element").click(function(){
    var $this = $(this);
    if($this.data('clicked')) {
        func(some, other, parameters);
    }
    else {
        $this.data('clicked', true);
        func(some, parameter);
    }
});