JavaScript Array Destructuring

Perform Array Destructuring In JavaScript

Destructuring is extracting values from data types such as arrays, objects and strings.

Arrays and objects destructuring can be assigned default values if the index is not defined. Nested destructuring is possible for data types with nested properties. The array data type is non-primitive, mutable by default and can store different elements of any data type.

Destructuring assignment syntax unpacks values from some primitive and non-primitive data structures into distinct variables.

Common Syntax Of Array Destructuring In JavaScript

Glossary:

Data Type

Collection or grouping of data values.

Immutable

Value cannot be changed once created.

Primitive

Not an object and has no methods or properties.

Common Array Destructuring

Ojamboshop.com Learning JavaScript Array Destructuring
Name Description Example
[s1, s2, s3] = array array destructuring. [str1, str2, str3] = messages;
[v1,v2,v3] = [x,y,z] array destructuring assignment. [s1, s2, s3] = [“One”, “Two”, “Three”];
[v1,v2,v3 ..rest] = [w,x,y,z] rest operator. [s1, s2, s3, …rest] = [“One”, “Two”, “Three”, “Four”, “Five”];
Name Description Example

JavaScript Array Destructuring Snippet

// OjamboShop.com Learning JavaScript Array Destructuring Tutorial
let message = ["Hello World!", "The Message!", "Members Only!"];
let [str1, str2, str3] = message;
console.log(str1);
console.log(str2);
console.log(str3);
// Array Destructuring Assignment
[str1, str2, str3, ...rest] = ["One", "Two", "Three", "Four", "Five"];
console.log(str1);
console.log(str2);
console.log(str3);
console.log(rest);

JavaScript Array Destructuring Code
OjamboShop.com Web IDE JavaScript Array Destructuring Code

JavaScript Comparison Operators Result
OjamboShop.com Web IDE Displaying JavaScript Array Destructuring Result


Usage

You can use any IDE or text editor and the web browser to compile and execute JavaScript code. For this tutorial, the OjamboShop.com Learning JavaScript Course Web IDE can used to input and compile JavaScript code for the string destructuring.

Open Source

JavaScript follows the ECMAScript standard and is licensed under the W3C Software License by web browser vendors and runtime environment vendors. This allows commercial use, modification, distribution, and allows making derivatives proprietary.

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Conclusion:

JavaScript makes it easy to use the array destructuring expressions. Use the destructuring assignment syntax to unpack values from applicable data types into distinct variables.

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