JavaScript has()
Posted 2023-05-16 11:21:29
0
11K
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.
Search
Categories
- Arts
- Business
- Computers
- Games
- Health
- Home
- 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
Read More
The Thrill of Netball: A Sport Bridging Skill and Strategy
The Thrill of Netball: A Sport Bridging Skill and Strategy
Netball, a dynamic and fast-paced...
Rocky. (1976)
A small-time Philadelphia boxer gets a supremely rare chance to fight the world heavyweight...
When Is the Right Time to Expand Internationally?
For many businesses, expanding internationally represents the ultimate growth milestone. Global...
What Is Multilevel Marketing (MLM)?
Introduction
Multilevel Marketing (MLM), sometimes known as network marketing, is one of the...
Nutrients & Health
Every cell in the body needs nutrients that come from food and the environment. The body breaks...