var data={
  A:["Ajax","Async","Angular"],
  B:["Browser","Body","Backbone","Bootstrap","Boolean"],
  C:["CSS","Cookie"],
  D:["Document","DOM","Div","D3","Dojo"],
  E:["Extjs","Element","ECMA"],
  F:["F2E","Float","Font","Frame","Firefox","Form","FuckIE6"],
  G:["Get","Grunt","Gulp"],
  H:["HTML","Head","Horizontal","Hybird"],
  I:["Iframe","Iscroll"],
  J:["JavaScript","Jquery","Json"],
  K:["Knockout","Kissy","Karma"],
  L:["LESS","LocalStorage","Livereload","Lazyload"],
  M:["Module","Modernizr","Model"],
  N:["Node","Navigator"],
  O:["Object"],
  P:["Post","Polymer","Placeholder","Push","Polyfill","Promise"],
  Q:["QuerySelector"],
  R:["Request","React","Require"],
  S:["Stylus","SASS","Section","SEO"],
  T:["TodoMVC","Transform","Then","TinyMCE"],
  U:["Underscroe","Uglify","UI"],
  V:["Vanilla","View","Vue","Video"],
  W:["W3C","Web","Webpack"],
  X:["XML","XSS","XHR"],
  Y:["Yeoman","YUI","Yield"],
  Z:["Zepto","Zoom"]
}

var vList=new Vue({
  el:"#initialSelector",
  data:{
    data:data,
  },
  computed:{
    initialList:function(){
      var initialList=[]
      for(key in this.data){
        initialList.push(key)
      }
      return initialList
    }
  }
})
console.log(vList.initialList)