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
What is the Best Business Structure for a Startup?
Starting a business is an exciting and challenging endeavor. One of the most important decisions...
Библиотека бизнесмена.
Государство и право.
Мир «Игры престолов» — это мир подлости, разврата и...
What Mistakes Should Organizations Avoid in Public Relations?
How to Protect Your Brand, Build Trust, and Steer Clear of Common PR Pitfalls
In the fast-moving...
JavaScript forEach()
The forEach() method is an iterative method. It calls a...
Is the Workplace Collaborative or Do People Work Independently?
Every workplace operates with a unique rhythm—some thrive on constant collaboration and...