从opener调用子窗口函数的JavaScript不起作用 [英] Javascript,calling child window function from opener doesn't work

问题描述

我正在开发一个使用windows.open（..）打开弹出窗口的Web应用程序。我需要使用由window.open返回的句柄在打开的窗口上调用函数，但是我总是收到错误消息addWindow.getMaskElements不是函数，就好像它无法访问声明的函数在儿童窗口。这是IE和FF的行为。我的代码如下所示：

 函数AddEmail（目标，类别）
 {
 if（addWindow = = null）
 {
 currentCategory = category; 
 var left = getDialogPos（400,220）[0]; 
 var top = getDialogPos（400,220）[1]; 
 addWindow = window.open（adicionar_email.htm，null，height = 220px，width = 400px，status = no，resizable = no）; 
 addWindow.moveTo（left，top）; 
 addWindow.getMaskElements（）; 
} 
} 
  

我已经从不同的可靠来源读取并读取显然这应该是可行的，但事实并非如此。
还有一点，子窗口中的函数在adicionar_email.htm文件中包含的单独的.js文件中声明。这是否有所作为？它不应该..
所以，如果有人遇到过类似的问题，或者对我做错了什么有所了解，请回复此消息。
提前致谢。

Kenia

解决方案

窗口创建不是阻塞操作;脚本继续执行，同时该窗口打开并加载HTML& javascript和解析它。

如果您要在原始页面上添加链接，请执行以下操作：

 < a href =＃onclick =addWindow.getMaskElements（）;>测试< / a> 
  

你会看到它的工作原理。 （我试了一下就可以了。）

**编辑**

其他人发布了一个解决方法通过调用目标文档中的onload，以下是另一种方法：

$ p $ function AddEmail（）
{

if（addWindow == null）{
addWindow = window.open（test2.html，null，height = 220px，width = 400px，status = no，resizable = no）; $！

$ b if（！addWindow.myRemoteFunction）{
setTimeout（AddEmail，1000）;
} else {addWindow.myRemoteFunction（）; }
}


这会一直试图每隔1秒调用一次addWindow.myRemoteFunction，成功地称呼它。

I'm developing a web application that opens a popup using windows.open(..). I need to call a function on the opened window using the handle returned by "window.open", but I'm always getting the error message "addWindow.getMaskElements is not a function", as if it couldn't access the function declared on child window. This is the behavior in both IE and FF. My code looks like this:

function AddEmail(target,category)
{
    if(addWindow == null)
    {
        currentCategory = category;
        var left = getDialogPos(400,220)[0];
        var top =  getDialogPos(400,220)[1];
        addWindow = window.open("adicionar_email.htm",null,"height=220px, width=400px, status=no, resizable=no");
        addWindow.moveTo(left,top);
        addWindow.getMaskElements ();
    }
}

I've googled and read from different reliable sources and apparently this is supposed to work, however it doesn't. One more thing, the functions in child window are declared in a separate .js file that is included in the adicionar_email.htm file. Does this make a difference? It shouldn't.. So, if anyone has ran into a similar problem, or has any idea of what I'm doing wrong, please, reply to this message. Thanks in advance.

Kenia

解决方案

The window creation is not a blocking operation; the script continues to execute while that window is opening and loading the HTML & javascript and parsing it.

If you were to add a link on your original page like this:

<a href="#" onclick="addWindow.getMaskElements();">Test</a>

You'd see it works. (I tried it just to be sure.)

**EDIT **

Someone else posted a workaround by calling an onload in the target document, here's another approach:

function AddEmail()
{

        if(addWindow == null) {
        addWindow = window.open("test2.html",null,"height=220px, width=400px, status=no, resizable=no");
        }

        if(!addWindow.myRemoteFunction) {
            setTimeout(AddEmail,1000);
        } else { addWindow.myRemoteFunction(); }
}

This keeps trying to call addWindow.myRemoteFunction every 1 second til it manages to sucessfully call it.

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