用javascript父窗口控制只弹出一个子窗口
2024-09-06 12:42:39
供稿：网友
近来网上经常流传一些关于如何在父窗口控制只弹出一个子窗口 问题，我查看了一些，大部分都是只能解决部分或者很麻烦，还不算完美。比如有人是实现的这样，使用的是Cookie，以下是例子。
主页上做了一个弹出窗口，如何使其只弹出一次，返回主页时不再弹出了。
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<script>
window.open("http://www.yeboss.com.cn","yeboss","width=300,height=400")
</script>
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cookie
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<HEAD>
<SCRIPT LANGUAGE="JavaScript">
<!-- Begin
var expDays = 1; // number of days the cookie should last
var page = "only-popup-once.html";
var windowprops = "width=300,height=200,location=no,toolbar=no,menubar=no,scrollbars=no,resizable=yes";
function GetCookie (name) {
var arg = name + "=";
var alen = arg.length;
var clen = document.cookie.length;
var i = 0;
while (i < clen) {
var j = i + alen;
if (document.cookie.substring(i, j) == arg)
return getCookieVal (j);
i = document.cookie.indexOf(" ", i) + 1;
if (i == 0) break;
}
return null;
}
function SetCookie (name, value) {
var argv = SetCookie.arguments;
var argc = SetCookie.arguments.length;
var expires = (argc > 2) ? argv[2] : null;
var path = (argc > 3) ? argv[3] : null;
var domain = (argc > 4) ? argv[4] : null;
var secure = (argc > 5) ? argv[5] : false;
document.cookie = name + "=" + escape (value) +
((expires == null) ? "" : ("; expires=" + expires.toGMTString())) +
((path == null) ? "" : ("; path=" + path)) +
((domain == null) ? "" : ("; domain=" + domain)) +
((secure == true) ? "; secure" : "");
