Question

65

js: accessing scope of parent class

rated 0 times [ 68] [ 3] / answers: 1 / hits: 81854 / 14 Years ago, thu, february 24, 2011, 12:00:00

I have a jquery class within a normal class in javascript. Is it possible to access variables in the scope of the parent class from a callback function in the jquery class?

A simple example of what I mean is shown below

var simpleClass = function () {    

    this.status = pending;

    this.target = jqueryObject;

    this.updateStatus = function() {

        this.target.fadeOut(fast,function () {

           this.status = complete; //this needs to update the parent class 

        });

    };

};

Now in the above example, the callback function tries to access the scope of the jquery object. is there any way to access the status variable in the parent class?

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margaritakristinak

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3 Years ago

answered 14 Years ago blaisep · Accepted Answer

You set this to a variable in the parent function and then use it in the inner function.

var simpleClass = function () {         

    this.status = pending;     

    this.target = jqueryObject;     



    var parent = this;



    this.updateStatus = function() {         

            this.jqueryObject.fadeOut(fast,function () {            

                parent.status = complete; //this needs to update the parent class          

            });     

        }; 

    };