Overiding Function in JS

Hi,

 

Below is the way to implement overriding in JS. The major use of this comes while working with Master & User Controls.

 

<script type="text/javascript">

    function Base()

    {

        this.OverrideMe = function()

        {

        alert("Base::Override()");

        }

 

        this.BaseFunction = function()

        {

        alert("Base::BaseFunction()");

        }

    }

 

    function Derive()

    {

        this.OverrideMe = function()

        {

            alert("Derive::Override()");

        }

    }

 

    function CallOveride()

    {

        Derive.prototype = new Base(); // Required only when u want to call some base class fucntions as well. This must be the first statement.

        d = new Derive();

        d.OverrideMe();      

       

        d.BaseFunction();

       

        d = new Base();

        d.OverrideMe();

    }

</script>

 

 

 

Thanks & Regards,

Arun Manglick

SMTS || Microsoft Technology Practice || Bridgestone - Tyre Link || Persistent Systems || 3023-6258

 

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