1. 在Flex中，ActionScript調用Javascript是比較簡單的，說白了就是，在html里，怎么調用Javascript，在ActionScript就怎么調用就可以了
2. 如果用js調用as，就稍微麻煩一點，其實也比較簡單
MXML代碼：
<?xml version="1.0" encoding="utf-8"?><mx:Application xmlns:mx="http://www.adobe.com//mxml" layout="vertical" horizontalAlign="left" backgroundColor="white"initialize="init()"><mx:Label text="城市名稱："/><mx:List id="cityList" width="" height="" dataProvider="{cities}"/><mx:ArrayCollection id="cities"><mx:String>北京</mx:String><mx:String>上海</mx:String></mx:ArrayCollection><mx:Script><![CDATA[private function init(): void{//注冊回調函數供JavaScript調用ExternalInterface.addCallback("callActionScript", asFunctionByJs);}private function asFunctionByJs(city: String): void{cities.addItem(city); }]]></mx:Script></mx:Application>HTML代碼（這些代碼都是flex builder自動生成的，用于將flash嵌入到網頁里，不用仔細看這些代碼，注意黃色背景的部分，這是關鍵部分，是我加入到）
<!-- saved from url=(0014)about:internet --><html lang="en"><!-- Smart developers always View Source. This application was built using Adobe Flex, an open source frameworkfor building rich Internet applications that get delivered via theFlash Player or to desktops via Adobe AIR. Learn more about Flex at http://flex.org // --><head><meta http-equiv="Content-Type" content="text/html; charset=utf-" /><!-- BEGIN Browser History required section --><link rel="stylesheet" type="text/css" href="history/history.css" /><!-- END Browser History required section --><title></title><script src="AC_OETags.js" language="javascript"></script><!-- BEGIN Browser History required section --><script src="history/history.js" language="javascript"></script><!-- END Browser History required section --><style>body {}{ margin: px; overflow:hidden }</style><script language="JavaScript" type="text/javascript"><!--// -----------------------------------------------------------------------------// Globals// Major version of Flash requiredvar requiredMajorVersion = 9;// Minor version of Flash requiredvar requiredMinorVersion = 0;// Minor version of Flash requiredvar requiredRevision = 124;// -----------------------------------------------------------------------------// --></script><script type="text/javascript">function callActionScript(value){//根據id獲取flash實例，在這里id是CallAsFromJs，可以從Embedvar flash = (navigator.appName.indexOf ("Microsoft") !=-)?window["CallAsFromJs"]:document["CallAsFromJs"];//調用ActionScript注冊的回調方法flash.callActionScript(value);}</script></head><body scroll="no">輸入城市名稱：<input type="text" id="newCityName"/><input type="button" value="添加城市" onclick="callActionScript(newCityName.value);"/><script language="JavaScript" type="text/javascript"><!--// Version check for the Flash Player that has the ability to start Player Product Install (6.0r65)var hasProductInstall = DetectFlashVer(6, 0, 65);// Version check based upon the values defined in globalsvar hasRequestedVersion = DetectFlashVer(requiredMajorVersion, requiredMinorVersion, requiredRevision);if ( hasProductInstall && !hasRequestedVersion ) {// DO NOT MODIFY THE FOLLOWING FOUR LINES// Location visited after installation is complete if installation is requiredvar MMPlayerType = (isIE == true) ? "ActiveX" : "PlugIn";var MMredirectURL = window.location;document.title = document.title.slice(0, 47) + " - Flash Player Installation";var MMdoctitle = document.title;AC_FL_RunContent("src", "playerProductInstall","FlashVars", "MMredirectURL="+MMredirectURL+'&MMplayerType='+MMPlayerType+'&MMdoctitle='+MMdoctitle+"","width", "100%","height", "100%","align", "middle","id", "CallAsFromJs","quality", "high","bgcolor", "#ffffff","name", "CallAsFromJs","allowScriptAccess","sameDomain","type", "application/x-shockwave-flash","pluginspage", "http://www.adobe.com/go/getflashplayer");} else if (hasRequestedVersion) {// if we've detected an acceptable version// embed the Flash Content SWF when all tests are passedAC_FL_RunContent("src", "CallAsFromJs","width", "%","height", "%","align", "middle","id", "CallAsFromJs","quality", "high","bgcolor", "#ffffff","name", "CallAsFromJs","allowScriptAccess","sameDomain","type", "application/x-shockwave-flash","pluginspage", "http://www.adobe.com/go/getflashplayer");} else { // flash is too old or we can't detect the pluginvar alternateContent = 'Alternate HTML content should be placed here. '+ 'This content requires the Adobe Flash Player. '+ '<a href=http://www.adobe.com/go/getflash/>Get Flash</a>';document.write(alternateContent); // insert non-flash content}// --></script><noscript><object classid="clsid:DCDBE-AED-cf-B-"id="CallAsFromJs" width="%" height="%"codebase="http://fpdownload.macromedia.com/get/flashplayer/current/swflash.cab"><param name="movie" value="CallAsFromJs.swf" /><param name="quality" value="high" /><param name="bgcolor" value="#ffffff" /><param name="allowScriptAccess" value="sameDomain" /><embed src="CallAsFromJs.swf" quality="high" bgcolor="#ffffff"width="%" height="%" name="CallAsFromJs" align="middle"play="true"loop="false"quality="high"allowScriptAccess="sameDomain"type="application/x-shockwave-flash"pluginspage="http://www.adobe.com/go/getflashplayer"></embed></object></noscript></body></html>總結，js調用as，大概分為3步：
1.as使用ExternalInterface.addCallback注冊回調函數
2.在js函數中根據flash在網頁中的id獲取實例
3.用上面獲取到flash實例，調用as的函數
以上所述是小編給大家介紹的Javascript 調用 ActionScript 的簡單方法，希望對大家有所幫助，如果大家有任何疑問請給我留言，小編會及時回復大家的。在此也非常感謝大家對武林網網站的支持！
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