Kiwango cha kuzingatia kifaa cha kifaa cha JavaScript
- Ukagumu kuzingatia assign()
- Pya kuzingatia create()
- Retunza kwa ukweli Mado ya kuelewa kuhusu Mfano wa JavaScript
Makadaro na Matumizi
constructor Kiwango cha kuzingatia kifaa kinatoa programu ya kuzingatia kifaa cha chanzo cha kifaa.
Kwa kifaa cha JavaScript, kiwango cha kuzingatia kifaa kinatoa:
function Object() { [native code] }
Mfano
Pata kiwango cha kuzingatia kifaa:
const person = {
firstName: "Bill",
lastName: "Gates",
age: 19,
eyeColor: "blue"
};
let text = person.constructor;
Makosa
kifaa.constructor
Matokeo
function Object() { [mashika ya kwanza] }
Inasimamia kwa kusoma mawasiliano
constructor Inaajiliwa kama kiwango cha ECMAScript1 (ES1).
Watazuri wa kila programu ya kusoma mawasiliano inasimamia ES1 (JavaScript 1997):
| Chrome | IE | Edge | Firefox | Safari | Opera |
|---|---|---|---|---|---|
| Chrome | IE | Edge | Firefox | Safari | Opera |
| Msaada | Msaada | Msaada | Msaada | Msaada | Msaada |
Vipindi vya vingine
- Ukagumu kuzingatia assign()
- Pya kuzingatia create()
- Retunza kwa ukweli Mado ya kuelewa kuhusu Mfano wa JavaScript
