[AS3]flash网页标签allowScriptAccess与allowNetworking用法介绍

网页标签
<param name="allowScriptAccess" value="never" />
<param name="allowNetworking" value="internal">

AS2的判断方法，如果allowNetworking为internal的话，str的值为null, 否则为undefined

import flash.external.ExternalInterface; 
var str; 
try { 
        str = ExternalInterface.call(null); 
        str +=""; 
        if (str == "null") { 
            test.htmlText = "CuPlayer.com提示：加了allowNetworking"; 
        }else{ 
             test.htmlText = "CuPlayer.com提示：没加allowNetworking"; 
        } 
} catch (e) {        
} 

AS3的判断方法，如果allowNetworking为internal的话，ExternalInterface.call(null)后抛出异常，否则不会

import flash.external.ExternalInterface; 
var allowNetworking:Object; 
try { 
        allowNetworking=ExternalInterface.call(null); 
        test.htmlText='CuPlayer.com提示：没加 allowNetworking'; 
} catch (e:*) { 
        test.htmlText='CuPlayer.com提示：加了allowNetworking err #'+e.errorID+''; 
}