JavaScript has 8 Datatypes
1. String
2. Number
3. Bigint
4. Boolean
5. Undefined
6. Null
7. Symbol
8. Object
The Object Datatype
The object data type can contain:
- An object
- An array
- A date
Note: A JavaScript variable can hold any type of data.
Note
Most programming languages have many number types:
Whole numbers (integers):
byte (8-bit), short (16-bit), int (32-bit), long (64-bit)
Real numbers (floating-piont):
float (32-bit), double (64-bit).
Javascript are always one type:
double (64-bit floating point).
+ | Type | Value |
---|---|---|
1 | JavaScript Booleans | Ture / False |
2 | JavaScript BigInt | 64Bit - Number - A BigInt can not have decimals. |
3 | JavaScript Arrays | JavaScript arrays are written with square brackets. Array items are separated by commas. |
4 | JavaScript Objects | JavaScript objects are written with curly braces {}. Object properties are written as name:value pairs, separated by commas. |
Sample1: BigInt
JavaScript/006-MathematicalOperations/006
Sample2: Booleans
JavaScript/007-JavaScriptDataTypes/001Booleans
Sample3: Booleans
JavaScript/007-JavaScriptDataTypes/002Booleans
Sample4: String
JavaScript/007-JavaScriptDataTypes/003String
Sample5: String Multiline
JavaScript/007-JavaScriptDataTypes/004StringMultiLine
Sample6: Array
JavaScript/007-JavaScriptDataTypes/005Array01
Sample7: Objects
JavaScript/007-JavaScriptDataTypes/006Object
Sample8: typeof
JavaScript/007-JavaScriptDataTypes/007typeof