rndme

var r=[
{url:"/Steel/Steel%20Band%20Music%20Of%20The%20Carribbean-09-Native%20Mambo.mp3",
 name:"Steel Band Music Of The Carribbean-09-Native Mambo",src:"ZM3xplefSl"},
{url:"/Steel/Steel%20Band%20Music%20Of%20The%20Carribbean-08-Jungle.mp3",
 name:"Steel Band Music Of The Carribbean-08-Jungle",src:"ZM3xplefSl"},
{url:"/Steel/Steel%20Band%20Music%20Of%20The%20Carribbean-07-LaPaloma.mp3",
 name:"Steel Band Music Of The Carribbean-07-LaPaloma",src:"ZHdf478Dwd"},
{url:"/Steel/Steel%20Band%20Music%20Of%20The%20Carribbean-06-Zulu%20Chant.mp3",
 name:"Steel Band Music Of The Carribbean-06-Zulu Chant",src:"ZM3xplefSl"},
{url:"/Steel/Steel%20Band%20Music%20Of%20The%20Carribbean-05-Spear%20Dance.mp3",

rndme

function classes(){
  return [].filter.call(arguments, Boolean).map(function(a){
      return typeof a === "object" ?  
           (Array.isArray(a) ?
               cn.apply(0,a) :
               Object.keys(a).filter(function(k){return a[k];}).join(" ")) :
           a;
  }).filter(String).join(" ");
}

rndme

[].map.call( Array(10)+1, Function.call.bind(Number)  )

rndme

Object.keys(Object(Array(10)+0)).map(Number)