求助！！！！！在线等急！！！！

var forest={};

 Object.defineProperties(forest,{

  title:{value:'fe',enumerable:true},

  corp:{value:'BABA',enumerable:true},

  salary:{value:'50000',enumerable:true,writable:true},

  luck:{

  get:function(){

  return Math.random()>0.5?'good':'bad';

  }

  },

  promote:{

  set:function(level){

  this.salary*=1+level*0.1;

  }

  }

 });

 forest.salary;

这个代码在Sublime怎么执行？

而且会报错

Uncaught TypeError: forest.promote is not a function

    at 标签属性.html:37