extend

function

`List.extend([name,] [staticProperties,] instanceProperties)`

Creates a new extended constructor function. Learn more at [can.Construct.extend].

var MyList = List.extend({}, {
    // silly unnecessary method
    count: function(){
        return this.attr('length');
    }
});

var list = new MyList([{}, {}]);
console.log(list.count()); // -> 2

Parameters

name {String}:
If provided, adds the extened List constructor function to the window at the given name.
staticProperties {Object}:
Properties and methods directly on the constructor function. The most common property to set is Map.
instanceProperties {Object}:
Properties and methods on instances of this list type.