2015/08

var popup; $("#btnPopup").click(function () { if (popup == undefined) { popup = window.open("Popup.aspx", "Test", "top=10, left=20, width=600, height=600"); } else { if (popup.closed) { popup = window.open("Popup.aspx", "Test", "top=10, left=20, width=600, height=600"); } else { alert("이미 팝업창이 떠있습니다."); } } });