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
YouTube and Web Marketing Synergy: Building a Unified Brand Presence
1. From Channel to Ecosystem: Rethinking YouTube’s Role
In the past, many businesses...
What Key Decisions Need to Be Made—And by Whom? Clarifying Governance, Approval Processes, and Roles
Clear decision-making is a cornerstone of successful project management. Knowing what decisions...
Spider-Man: Into the Spider-Verse. (2018)
Teen Miles Morales becomes the Spider-Man of his universe, and must join with five spider-powered...
How Is User Behavior in Search Different From General Behavior on Websites?
When people browse the internet, their actions can be categorized into two broad contexts:...
Autism Spectrum: Spectrum Model
Before the diagnostic manuals the DSM-5 (2013) and ICD-11 (2022) were adopted, what is now called...