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var Oo= function(){
  var x;
  var y;
  return{
  a:function(){
  ...
  },
  b:function(){
  ...
  }
  }
}();
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0o = function(){
  this.x;
  this.y;
}
Oo.prototype = {
  a:function(){
  this.x = 100;
  },
  b:function(){
  this.y = 200;
  }
}
//µ÷Ó÷½Ê½
Ext.onReady(function(){
  var o = new Oo();
  0.a();
});
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