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
Flag of Denmark
The flag of Denmark, called the Dannebrog by the Danes ( Danish: Dannebrog; Dannebrog) is a red...
How Can Emotional Intelligence Aid in Conflict Resolution?
In any setting—whether in the workplace, among friends, or within families—conflict...
How Do I Pitch Without Sounding Salesy?
One of the biggest fears presenters have — whether they’re startup founders,...
What role does technology play in business forecasting?
In today’s rapidly evolving business landscape, forecasting has become an indispensable...
How Do I Increase My Sales?
Increasing sales is one of the most common goals in business — and also one of the most...