js 播放语音

var audio = new Audio('audio_file.mp3');
audio.play();

function speckText(str){
　　   //var request=  new URLRequest();
var url = "http://tts.baidu.com/text2audio?lan=zh&ie=UTF-8&text=" + encodeURI(str);        // baidu
//url = "http://translate.google.cn/translate_tts?ie=UTF-8&tl=zh-CN&total=1&idx=0&textlen=19&prev=input&q=" + encodeURI(str); // google

　　         //request.url = encodeURI(url);
// request.contentType = "audio/mp3"; // for baidu
//request.contentType = "audio/mpeg"; // for google

　　var n = new Audio(url);

　　 n.src = url;

　　 n.play();
　　
　　 // $("...").play();
　　// var sound = new Sound(request);
　　// sound.play();
}