JavaScript has()
نشر بتاريخ 2023-05-16 11:21:29
0
11كيلو بايت
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.
البحث
الأقسام
- Arts
- Business
- Computers
- الألعاب
- Health
- الرئيسية
- Kids and Teens
- مال
- 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
إقرأ المزيد
How Do I Pitch Without Sounding Salesy?
One of the biggest fears presenters have — whether they’re startup founders,...
How can companies prepare for potential crises?
In an increasingly volatile world, companies face numerous risks that could disrupt their...
You Can’t Hack the Growth of Just Anything: Why Growth Hacking Requires Product/Market Fit First
One of the most common misconceptions about growth hacking is that it can be applied to any...
Сансет бульвар. Sunset Blvd. (1950)
Молодой сценарист Джо Гиллис сидит на мели, его преследуют кредиторы, ему не на что поесть, ему...
How to Make Money Online
How to Make Money Online
In today’s digital age, making money online has become more...