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Prototypical Inheritance
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Implement prototypical inheritance by replacing the prototype of one constructor with the prototype of another constructor.
bash
npm install @stdlib/utils-inherit
javascript
var inherit = require( '@stdlib/utils-inherit' );
#### inherit( ctor, superCtor )
Implements prototypical inheritance by replacing the prototype of one constructor with the prototype of another constructor.
javascript
function Foo() {
return this;
}
Foo.prototype.beep = function beep() {
return 'boop';
};
function Bar() {
Foo.call( this );
return this;
}
inherit( Bar, Foo );
class
with extends
.
javascript
var inherit = require( '@stdlib/utils-inherit' );
function Foo() {
return this;
}
Foo.prototype = {};
Foo.prototype.beep = function beep() {
return 'boop';
};
function Bar() {
Foo.call( this );
this._super = Foo.prototype;
return this;
}
// Set up prototypical inheritance:
inherit( Bar, Foo );
var bar = new Bar();
var bool = ( bar instanceof Bar );
// returns true
bool = ( bar instanceof Foo );
// returns true
bool = bar.beep();
// returns 'boop'