Thread by @ATechAjay

💛 Day 2️⃣6️⃣ / 3️⃣0️⃣ days of basics in JavaScript series!

→ What is an array?

→ How many types of creating an array?

→ How to access array items & full array?

→ How to change the array items?

→ The data type of the array?

#javascript30

🧵⇩

📌 What is an array?

→ It is a special variable that can be store more than one value.

→ If you have multiple data items then you can use an array for storing those items.

→ It can hold many values in a single variable.

→ Or, storing a collection of multiple items in a single variable.

→ Js array can contain mixed types of data or items, like string, decimal, float, boolean, etc.

📌 How many types of creating an array?

→ There are 2 ways for creating an array for now.

1️⃣ Using array literals
2️⃣ Using new keyword

1️⃣ Using array literals [ ]

→ That means we can create an array using square brackets separated by semicolons.

→ Space and lines are not important, they can be spanned in multiple lines.

→ Generally, many people use this method for creating arrays.

2️⃣ Using new keyword

→ We can also use the new keyword for creating the array.

📌 How to access array items & full array?

👀 Access array items: We can access the items of an array using the index.

- 1st item = 0 index
- 2nd item = 1 index
- 3rd item = 2 index
- 4th item = 3 index

and so on...

⛔ Arrays index starts from 0.

👀 Access full array: We can access the full array using the name of the array.

📌 How to change the array items?

→ We can change the items of the array using the index number.

📌 The data type of the array?

→ It is a non-primitive data type.

→ An object is the data type of the array.

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