【已解决】js中如何写函数

function getUrlRespHtml_async(url, callback){

  var xmlHttp = new XMLHttpRequest();

  xmlHttp.onreadystatechange = function() {

    if (xmlHttp.readyState == ReadyState.DONE && xmlHttp.status == 200)

      callback(xmlHttp.responseText);

  }

  xmlHttp.open("GET", url, true);

  xmlHttp.send(null);

}

function gotStHtml(respHtml){

  // alert(respHtml);

  console.log(respHtml);

}

/*

  Loving You Allexinno Mirabela 试听 — SongTaste 用音乐倾听彼此

  http://www.songtaste.com/song/3498546/

*/

var stUrl = "http://www.songtaste.com/song/3498546/";

// var stUrl = "http://www.baidu.com";

getUrlRespHtml_async(stUrl, gotStHtml);