如何在不刷新的情况下将焦点设置到子窗口? [英] How to set the focus to a child window without refreshing it?

问题描述

我有一个包含四个链接的网页，每个链接打开一个弹出窗口.我正在使用通用的JavaScript函数打开弹出窗口，如下所示

I am having a web page which contain four links, each link open a popup window. I am using a common JavaScript function to open popup window, as given below

function OpenPopup(pageURL, title,w,h) {

    var left = (screen.width/2)-(w/2);

    var top = (screen.height/2)-(h/2);

    var targetWin = window.open (pageURL, title, 'toolbar=no, location=no, 
        directories=no, status=no, menubar=no, scrollbars=Yes, resizable=no, 
        copyhistory=no, width='+w+', height='+h+', top='+top+', left='+left);

    targetWin.focus();

}

当我单击链接时，它将打开一个弹出窗口，其中包含一个数据输入表单，我在该表单中输入了一些信息.然后，我需要从其他弹出窗口中查看其他信息，因此我回到主窗口，单击另一个链接，一个新的弹出窗口将打开，其中包含我需要查看的信息.我得到了信息并关闭了此弹出窗口，所以现在我在主窗口中，然后再次单击该数据输入表单的链接，因此弹出窗口出现了，但是我丢失了我输入的信息，这是因为我将再次打开弹出窗口，新的弹出窗口将用相同的名称替换现有的弹出窗口.

When I click on a link it will open a popup window, which contain a data entry form, I entered some information into that form. Then I need to review other information, from other popup window, so i go back to my main window, click on another link, a new popup window will get open which contain the information I need to review. I get the information and close this popup window, so now i am on my main window, then again I click on the link for that data entry form, so the popup window comes up but i lost the information that I have entered, it's because I am opening the popup window once again, and the new popup window will replace the existing popup with the same name.

现在我的问题是:

1. 有什么办法，我可以检查父窗口是否已经打开了弹出窗口吗?

1. Is their any way, I can check out the if popup window is already open from parent window?

如果弹出窗口已经打开，如何将焦点设置到该窗口，而不是重新加载它?

If the popup window is already open how can I just set the focus to it, rather then reloading it?

如何从父窗口引用子窗口，而又不仅仅通过子窗口的名称获得子窗口的对象?

How can I refer a child window from parent window, without having object of child window just by the name of child window?

即使刷新父窗口后，我也可以从父窗口引用子窗口吗?

Can I refer a child window from a parent window, even after refreshing the parent window?

推荐答案

对于1和2，您可以使用此功能

For 1 and 2 , you can use this function

// loads an URL into the popup without reloading it
function popupnr(mylink, windowname, refocus) {
    // open the window with blank url
    var mywin = window.open('', windowname, 'window attrs here');

    // if we just opened the window
    if (mywin.closed || (!mywin.document.URL) || (mywin.document.URL.indexOf("about") == 0)) {
        mywin.location = mylink;
    }
    else if (refocus) {
        mywin.focus();
    }

    // return the window
    return mywin;
}

1. 您不能通过子窗口的名称来引用它.没有window.children.您需要调用 window.open 以获得参考.

是的，可以.但是您需要在调用 window.open

Yes you can. But u need to use the same window name while calling window.open

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