javascript - 检查窗口打开

Question

var windowUrl = "";
var windowName = "mywin";
var w = window.open(windowUrl, windowName, windowSize);
w.document.write(html);
w.document.close();

这与 onclick 相关联。如果窗口存在，我不想写或关闭甚至打开(也许重新聚焦)。我找到了一些例子，但它们似乎没有“工作”(或者做我认为我需要的。)

Answer 1

尝试以下操作:

<script type="text/javascript">
function loadUniquePage(page) 
{
    if (opener && !opener.closed) {
        opener.focus();
    } else {
        var myWin = window.open(page,'','width=800,height=600');
        opener = myWin;
    }
}
</script>

也看看这个问题-JavaScript window.open only if the window does not already exist

另请查看@Aram Kocharyan 提供的链接:
https://developer.mozilla.org/en/DOM/window.closed