JavaScript has()
Postado 2023-05-16 11:21:29
0
11KB
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.
Pesquisar
Categorias
- Arts
- Business
- Computers
- Jogos
- Health
- Início
- Kids and Teens
- Money
- 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
Leia mais
Computer Education in the Modern World
In today’s digital age, education in computers has become essential for navigating the...
Mr. Smith Goes to Washington. (1939)
A naive youth leader is appointed to fill a vacancy in the U.S. Senate. His idealistic plans...
RU.TV Онлайн ТВ
Главный русскоязычный музыкальный телеканал страны — ежедневно в режиме...
The Art of Illustration: A Journey Through Visual Storytelling
Illustration is one of the most powerful forms of visual communication, blending artistry with...
What legal considerations should I be aware of?
When embarking on a new business venture or managing an existing one, legal considerations are...