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javascript – iPad Safari IOS 5 window.close()关闭错误的窗口

2019-10-07 20:47:30 作者：互联网

我们有一个iPad应用程序正在我们的旧iPad上工作.

我们使用打开外部链接
var x = window.open(url)

在一天结束时,当用户关闭应用程序的这一部分时,我们会浏览它打开的所有窗口并为每个窗口执行x.close(),一切都很好.

使用IOS 5和可爱标签在新iPad上进行测试,
打开新窗口(尽管现在它们以标签打开)很好,但是做x.close()似乎不一定要关闭x,它可能会关闭窗口y或z.执行x.focus()或y.focus()工作正常,正确的选项卡成为焦点,但关闭似乎只是选择它想要的任何选项卡.

这是一个错误还是我做错了什么？示例程序：

<html>
<head></head>
<body>
    <script>
        //The openWindow array will hold the handles of all open child windows
        var openWindow = new Array();
       var win1;
       var win2;
        //Track open adds the new child window handle to the array.
        function trackOpen(winName) {
            openWindow[openWindow.length]=winName;
        }

        //loop over all known child windows and try to close them.  No error is
        //thrown if a child window(s) was already closed.
        function closeWindows() {
            var openCount = openWindow.length;
            for(r=openCount-1;r>=0;r--) {
                openWindow[r].close();
            }
        }

        //Open a new child window and add it to the tracker.
        function open1() {
            win1 = window.open("http://www.yahoo.com");
            trackOpen(win1);
        }

        //Open a different child window and add it to the tracker.
        function open2() {
            win2 = window.open("http://www.google.com");
            trackOpen(win2);

        }
        //Open whatever the user enters and add it to the tracker
        function open3() {
            var newURL = document.getElementById("url").value;
            var win3= window.open(newURL);
            trackOpen(win3);
        }

    </script>
    <input type="button" value="Open 1" onclick="open1()">
    <input type="button" value="Open 2" onclick="open2()">
    <input type="button" value="Focus 1" onclick="win1.focus()">
    <input type="button" value="Focus 2" onclick="win2.focus()">
    <input type="button" value="Close 1" onclick="win1.close()">
    <input type="button" value="Close 2" onclick="win2.close()">

    URL: <input type="text" id="url"> <input type="button" value="Open URL" onclick="open3()">
    <input type="button" value="Close All" onclick="closeWindows()">

</body>
</html>

解决方法:

这对我来说很有用(iPad 2和3; 3和iOS 5.1.1)

var host=window.opener;
window.focus(); /* solves the iPad3 problem */
window.close(); /* the actual closing we want to achieve... */
/* makes the focus go back to opener on iPad2, fails silently on iPad3 */
try { host.focus(); } catch(e) {}

标签：javascript,mobile-safari,ipad
来源： https://codeday.me/bug/20191007/1868773.html