已采纳回答 / qq_慕码人3056696
prompt不输入返回的是空字符,应该不算null!你改成这样就行了:if(open==true) { var url = prompt("请输入新网址",'https://www.imooc.com'); if(url!="") {var openURL=window.open(url,'_blank','wideth=400,height=500,menubar=no,toolbar=no');} else { ...
2019-03-24