javascript - OOP set a passed-in variable with new data from inside closure? -

when using oop can pass in options link var outside object/closure, can set inside object/closure?

var object = function (element, options) {      this.$element = $(element);     this.options = {         // option1         place: {},              };     // option2     this.place;     this.init();  };  object.prototype = {    set: function(newplace){         // option1        this.options.place = newplace;        //option 2        this.place = newplace;     } }  $.fn.object = function (option) {     if(option instanceof object) {         this._object = new object(this, option);         return this;     }else if(option instanceof string){        switch (option) {            // option2            case 'place': return this._object.place;                break;            default: return this;         }     } }; $.fn.object.constructor = object; 

-------- goal -----------

var newplace = null; var newobject = new object({ place : newplace }); // or $('#').object({ place: newplace });  newobject.set('test');  newplace === 'test';  // <-- object should able set value of external var. 

i have tried 2 ways both don't return new data set inside closure/object.

i have labeled them option1 , option2 above.

basically expect var overridden, i've tried playing call/apply.

so turns out may have been trying that's not right way it.

best way , solution pass in function callback in options update local var.

exampleobject = function(options){     options = {        update: function(){}     }  }  exampleobject.prototype = {      set: function(newplace){         this.options.update(newplace);     } }  newobject = exampleobject({ update: function(r){ newplace = r; } });