如何从actionscript中读取全局javascript变量

Given that there is a global javascript variable on my web page named myVar, how can I access the value of the variable myVar from within my flash movie using javascript?

鉴于我的网页上有一个名为myVar的全局javascript变量,如何使用javascript从我的flash影片中访问变量myVar的值?

I see plenty of examples of using external interface in order to execute javascript from actionscript, but I am unable to find examples of returning values back into the flash movie using actionscript.

我看到很多使用外部接口的例子,以便从actionscript执行javascript,但是我无法找到使用actionscript将值返回到flash电影中的示例。

Thanks in advance. I hope my question is clear enough.

提前致谢。我希望我的问题很清楚。

4 个解决方案

#1

ExternalInterface works by allowing JavaScript to invoke an ActionScript function in the movie, and vice-versa. You can optionally receive a return value back from the invoked function. Here's a very simple example:

ExternalInterface允许JavaScript在电影中调用ActionScript函数,反之亦然。您可以选择从调用的函数接收返回值。这是一个非常简单的例子:

JavaScript:

<script language="JavaScript">
    function getMyVar()
    {
        return myVar;
    }
</script>

Flash/AS:

import flash.external.ExternalInterface;
var result:string = ExternalInterface.call("getMyVar");

#2

You can also provide an anonymous function that returns your global variable value to the ExternalInterface.call method as follow:

您还可以提供一个匿名函数,将您的全局变量值返回给ExternalInterface.call方法,如下所示:

ExternalInterface.call("function(){ return myGlobalVariable; }");

#3

I've noticed Rex M's answer is a bit incomplete.

我注意到Rex M的答案有点不完整。

He was right about using...

他正确使用......

import flash.external.ExternalInterface;
var result:string = ExternalInterface.call("getMyVar");

Then in your javascript you can use

然后在您的JavaScript中,您可以使用

<script language="JavaScript">
    function getMyVar() {
        return myVar;
    }
</script>

However in order to use this, the flash movie must be in an html accessed over http. Not using file://

但是为了使用它,flash影片必须是通过http访问的html。不使用file://

Here is a tutorial for communicating from actionscript to javascript and vice versa. http://www.youtube.com/watch?v=_1a6CPPG-Og&feature=plcp

这是一个从actionscript到javascript进行通信的教程,反之亦然。 http://www.youtube.com/watch?v=_1a6CPPG-Og&feature=plcp

#4

You can also do this:

你也可以这样做:

ExternalInterface.call("eval","getVar=function(obj){return obj}");
var yourVar:String = ExternalInterface.call("eval","getVar(JSvar)");

#1