JavaScript data types with example - AsgarTech
JavaScript data types with example - AsgarTech
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JavaScript data types, including:
Number: Used for numeric values, both integer and floating-point.
Example: const num = 42;
Example: const num = 42;
String: Used for textual data.
Example: const str = "Hello World!";
Boolean: Used for logical values, which can be either true or false.
Example: const isTrue = true;
Null: Used to represent the intentional absence of any object value.
Example: const noValue = null;
Undefined: Used to represent the absence of a value, or an uninitialized variable.
Example: let myVar; // myVar is undefined
Object: Used for complex data structures, consisting of key-value pairs. Example:
const person = {
name: "John Doe",
age: 30,
address: {
street: "123 Main St",
city: "Anytown",
state: "CA"
}
};
Array: Used for ordered collections of data.
Example: const myArray = [1, 2, 3, 4, 5];
Symbol: Used to create unique identifiers for object properties.
Example:
const sym = Symbol("description");
const obj = {
[sym]: "value"
};
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