怎么判断一个窗口是否已经打开，大家先看好说明哈

Question

1)a.htm在打开win8时:document.cookie="win8=Y"
2)win8关闭时:onfeforeunload--->document.cookie="win8=''"或EXPIRE~;
3)b.htm:读取cookie("win8"):空或NULL-->OPEN "WIN8";"Y"-->WIN8窗口存在

Answer 1

window.open("javascript:if(window.document.body) window.focus();else location.href='a.htm';","win8");

Answer 2

飘过..
src=javascript:
喜欢这个..
:D

Answer 3

看到这里全是猩猩，我都怕说话了。var wina = window.open("a");
var winb = window.open("b");winb页面js
if(window.opener.wina) {
    alert("a页面存在!")
}

Answer 4

用cookie比较现实
to：muxrwc整个精神点的头啊搞的像是犯子

Answer 5

<a href="javascript:void(0)" onclick="javascript:window.open('aa.htm','new','')">aaa</a>look!

Answer 6

window.open("javascript:if(window.document.body) window.focus();else location.href='a.htm';","win8"); 这个非常好.