👍3
👍2
👍4
hasOwnProperty
Objectning biron hususiyati bor yoki yo'qligini tekshirish uchun ishlatiladi.
@abs_javascript
Objectning biron hususiyati bor yoki yo'qligini tekshirish uchun ishlatiladi.
let kanal = {
react: 'abs_reactjs',
js: 'abs_javascript'
}
console.log(kanal.hasOwnProperty('js')) // true
console.log(kanal.hasOwnProperty('ali')) // false@abs_javascript
👍6🔥2
let kanal = {
} kanal.hasOwnProperty(null) ?
} kanal.hasOwnProperty(null) ?
Anonymous Quiz
39%
true
39%
false
7%
NaN
15%
ReferenceError
👍4
JavaScript
Photo
🗿15❤1
Promise.reject('Error').catch(error => console.log(error))
Anonymous Quiz
16%
undefined
37%
Error
41%
"Error"
6%
"undefined"
👍2
Promise.resolve('Error').catch(error => console.log(error));
Anonymous Quiz
16%
Error
28%
"Error"
19%
Promise {<rejected>: "Error"}
37%
Hech narsa chiqmaydi
👍2
👍5