Question

I’m new in JavaScript.

I have base Telerik’s JavaScript class:

Telerik.Web.UI.RadGrid.prototype =
{
    _contextmenu: function(e) {...}
}

I derived my class from Telerik’s base class:

Parus.Controls.ParusGrid.prototype =
{
}

Parus.Controls.ParusGrid.registerClass("Parus.Controls.ParusGrid", Telerik.Web.UI.RadGrid);

How can I override _contextmenu function in my class and allow execution of base _contextmenu function?

Answer 1

If you want to get class derived from Telerik.Web.UI.RadGrid you should set prototype to derived class.

Parus.Controls.ParusGrid.prototype = new Telerik.Web.UI.RadGrid();

then override your method as you want

Parus.Controls.ParusGrid.prototype._contextmenu = function(e) {
    //base method
    Telerik.Web.UI.RadGrid.prototype._contextmenu.call(this,e)        
}