JavaScript has()
Сообщение 2023-05-16 11:21:29
0
11Кб
The has() function of the map object accepts a key in string format and returns a boolean value of true if the specified key exists. Otherwise, the function returns false.
Map is a data structure in JavaScript that allows the storage of [key, value] pairs where any value can be used as either a key or value.
Syntax
mapObject.has(key)
The has() function takes a key in the string format. It returns a boolean value that indicates the presence of that key in the Map object.
Поиск
Категории
- Arts
- Business
- Computers
- Игры
- Health
- Главная
- Kids and Teens
- Деньги
- News
- Recreation
- Reference
- Regional
- Science
- Shopping
- Society
- Sports
- Бизнес
- Деньги
- Дом
- Досуг
- Здоровье
- Игры
- Искусство
- Источники информации
- Компьютеры
- Наука
- Новости и СМИ
- Общество
- Покупки
- Спорт
- Страны и регионы
- World
Больше
The Thrilling World of Lumberjack Sports: Blending Tradition with Competitive Spirit
Deep in the heart of rugged forests and amidst the echoes of swinging axes and roaring chainsaws,...
What Questions Should I Ask My Mentor?
A mentoring relationship is most effective when driven by meaningful dialogue and mutual...
Прямой эфир телеканала Енисей.
Краевой телеканал «Енисей» — это развивающаяся и динамичная компания,...
What Are Your Strengths and Weaknesses?
This Assesses Self-Awareness and Honesty
In almost every job interview, candidates face the...
What are the Primary Responsibilities of a COO?
The Chief Operating Officer (COO) is one of the most critical leadership roles within an...