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
When to Stop Researching and Start Making Decisions: How to Know When You Have Enough Data
Introduction
You’ve run surveys, analyzed competitors, interviewed customers, and studied...
Best Practices for Video Marketing — Quality, Storytelling, Captions, Format, Mobile-Friendly, CTA
Introduction
Creating video content is only half the equation; making it effective requires a...
Baraka (1992)
A collection of expertly photographed scenes of human life and religion.
My Link
Should I Apply to Multiple Positions Within the Same Company?
It’s not uncommon for job seekers to find more than one appealing role within the same...
Where Should a Startup Biography Be Published?
A compelling startup biography is more than just a background story—it's a powerful tool...