Promise.prototype

Properti Promise.prototype mewakili prototype untuk kostruktor Promise.

Deskripsi

Instansi Promise diwariskan dari Promise.prototype. Anda bisa menggunakan objek prototype pada constructor untuk menambahkan properti atau method ke semua instansi Promise.

Properti

Promise.prototype.constructor

Mengembalikan fungsi yang membuat instansi prototype. Ini adalah fungsi Promise secara default.

Method

Promise.prototype.catch(onRejected)

Appends a rejection handler callback to the promise, and returns a new promise resolving to the return value of the callback if it is called, or to its original fulfillment value if the promise is instead fulfilled.

Promise.prototype.then(onFulfilled, onRejected)

Appends fulfillment and rejection handlers to the promise, and returns a new promise resolving to the return value of the called handler, or to its original settled value if the promise was not handled (i.e. if the relevant handler onFulfilled or onRejected is undefined).

Specifications

Browser compatibility

See also

• Promise