mirror of
https://github.com/flynx/Course-JavaScript.git
synced 2025-10-28 18:40:08 +00:00
more code...
Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
This commit is contained in:
parent
3a93d0a4d8
commit
ed01bba991
@ -111,7 +111,7 @@
|
||||
{} instanceof Object // -> true
|
||||
|
||||
// this essentially checks if the left oprtand is related to (i.e. in the
|
||||
// inheritance chain of) the second operand's .prototypr, or we can say
|
||||
// inheritance chain of) the second operand's .prototype, or we can say
|
||||
// that it id "inherited" from the constructor.
|
||||
|
||||
|
||||
@ -119,10 +119,53 @@
|
||||
// Prototypes and inheritance
|
||||
//
|
||||
|
||||
var a = {
|
||||
}
|
||||
|
||||
var b = Object.create(a)
|
||||
|
||||
var c = {
|
||||
__proto__: b,
|
||||
}
|
||||
|
||||
|
||||
// Constructors
|
||||
//
|
||||
|
||||
function A(){
|
||||
this.attr = 42
|
||||
this.method = function(){
|
||||
console.log('Hello world!')
|
||||
}
|
||||
}
|
||||
|
||||
var x = new A()
|
||||
|
||||
var y = {
|
||||
__proto__: A.prototype,
|
||||
}
|
||||
|
||||
|
||||
function B(){
|
||||
var obj = {
|
||||
__proto__: B.prototype,
|
||||
}
|
||||
return obj
|
||||
}
|
||||
|
||||
// this can be calles with and withot new
|
||||
var z = B()
|
||||
|
||||
// less naive...
|
||||
function C(){
|
||||
var obj = this instanceof C ?
|
||||
this
|
||||
: { __proto__: C.prototype }
|
||||
return obj
|
||||
}
|
||||
|
||||
// XXX extending the chain....
|
||||
|
||||
|
||||
|
||||
/**********************************************************************
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user