Using an if statement to check if a div is empty

Question

I\'m trying to remove a specific div if a separate div is empty. Here\'s what I\'m using:

$(document).ready(function () {
    if (\'#leftmenu:empty\') {
             


        

Answer 1

if (typeof($('#container .prateleira')[0]) === 'undefined') {
    $('#ctl00_Conteudo_ctrPaginaSistemaAreaWrapper').css('display','none');
}