function?openWindow(){????????var?cmd=confirm("確認(rèn)要打開新窗口嗎？");????????if(cmd=true){????????????var?url=prompt("請(qǐng)輸入網(wǎng)址：","http：//idcbgp.cn/");?????????????if(url!=null)??????????????{?????????????????????window.open(url,"_blank","width=400,height=500,toolbar=no,?menubar=no");???????????????}??????????else{????????????;????????}????????????????}????????else{????????????;????????}????}

默認(rèn)網(wǎng)址打開為什么會(huì)這樣呢？

另外else里怎么寫可以沒有任何操作