Question

I have simple code:

    $(this).parent().remove();
    if ($(this).parent())
    {
        alert( "exist" ); // alert always "exist"
    }

Why li element ( $(this).parent() ) was removed but alert in this scope – that not ?

Answer 1

You are checking if a jQuery object is truthy. All Javascript objects are truthy, so the if statement will always be entered. Instead you can check if the number of matched elements is truthy:

$(this).parent().remove();
if($(this).parent().length)
    alert( "exist" ); // alert "exist" if this still has a parent element.