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๐Ÿ“ฆ Topic 06: Arrays โ€” "Data Ki Line Lagao!"

"Arrays are one of the most commonly used data structures in any programming language." "Socho ekโ€ฆ

Overview
๐ŸŒŸ

๐Ÿ“ฆ Topic 06: Arrays โ€” "Data Ki Line Lagao!" โ€” Quick Facts

๐Ÿ“Œ

Previous: Index

๐ŸŽฏ

[โ† Topic 05: Functions](./05_JS_Functions.md): ๐Ÿ“š Course Index

Topic 1
๐Ÿ“Š

๐Ÿ“Œ Is Topic Me Kya Hai?

๐Ÿ“Š Array create karna, access karna, 30+ array methodsโ€ฆ
Topic 2
๐Ÿ’พ ๐Ÿ“Š ๐Ÿ”ฌ

๐Ÿ“ฆ Array Create Karna!

๐Ÿ’พ `javascript // METHOD 1: Array Literal (BEST! โœ…): let fruits = ["Apple", "Banana",โ€ฆ
Topic 3
๐Ÿ“ฅ โš™๏ธ ๐Ÿ”ฌ ๐Ÿ’ก

๐Ÿ”ข Access & Modify!

๐Ÿ—„๏ธ `javascript let fruits = ["Apple", "Banana", "Mango", "Grapes", "Orange"]; // ACCESSโ€ฆ
Topic 4
โœจ

โž• Add & Remove Methods!

๐Ÿ“ˆ `javascript let fruits = ["Apple", "Banana"]; // PUSH โ€” End me ADD! (returns new length!)โ€ฆ
Topic 5
๐Ÿ“ฅ ๐Ÿ“ฅ ๐Ÿง  ๐Ÿ”ฌ ๐Ÿ’ก ๐ŸŽฏ

โœ‚๏ธ splice() โ€” Swiss Army Knife!

๐Ÿ” `javascript // splice(startIndex, deleteCount, ...itemsToAdd) // ORIGINAL array MODIFYโ€ฆ
Topic 6
โœจ

๐Ÿ“‹ slice() โ€” Copy A Portion!

๐Ÿ“‰ `javascript // slice(start, end) โ€” start INCLUSIVE, end EXCLUSIVE! // ORIGINAL array NAHIโ€ฆ
Topic 7
๐Ÿ”’

๐Ÿ” Search Methods!

๐Ÿงฎ `javascript let fruits = ["Apple", "Banana", "Mango", "Banana", "Kiwi"]; // indexOf โ€”โ€ฆ
Topic 8
๐ŸŒ

๐Ÿ”„ Transform Methods โ€” Array Badlo!

๐ŸŒ map() โ€” Har Element Transform! `javascript // map = NEW array with EACH elementโ€ฆ
Topic 9
โœจ

๐Ÿ“Š Sort & Reverse!

๐Ÿ“Š `javascript // sort() โ€” MUTATES original! Default = alphabetical (string!) let fruits =โ€ฆ
Topic 10
๐Ÿ’พ ๐Ÿ“Š ๐Ÿ”ฌ

โœจ Spread Operator & Destructuring!

๐Ÿ’พ `javascript // SPREAD (...) โ€” Array "kholna"! let arr1 = [1, 2, 3]; let arr2 = [4, 5, 6];โ€ฆ
Topic 11
๐Ÿ”’

๐Ÿ”— Other Useful Methods!

๐Ÿ—„๏ธ `javascript // concat() โ€” Join arrays (returns NEW!): let a = [1, 2], b = [3, 4]; let c =โ€ฆ
Topic 12
๐Ÿ“ฅ โš™๏ธ ๐Ÿ”ฌ ๐Ÿ’ก

๐Ÿ”„ Method Chaining!

๐Ÿ“ˆ `javascript // Chain multiple array methods together! // Each method returns somethingโ€ฆ
Topic 13
โœจ

๐Ÿ”‘ KEY POINTS โ€” Top 10 Takeaways!

๐Ÿ” ` โ”Œโ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ” โ”‚ โ”‚ โ”‚ ๐Ÿ”‘ KEY POINTS โ”‚ โ”‚ โ”‚ โ”‚โ€ฆ
Topic 14
๐Ÿ“ฅ ๐Ÿ“ฅ ๐Ÿง  ๐Ÿ”ฌ ๐Ÿ’ก ๐ŸŽฏ

๐Ÿ’ช Exercises โ€” Khud Karo, Khud Seekho!

๐Ÿ“‰ Exercise 1: Array Basics ๐Ÿ“‹ `javascript let students = ["Rahul", "Priya", "Amit", "Neha",โ€ฆ
Topic 15
๐Ÿ”’

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๐Ÿงฎ | Previous | Index | Next | |----------|-------|------| | โ† Topic 05: Functions | ๐Ÿ“šโ€ฆ
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๐Ÿ“ฆ Topic 06: Arrays โ€” "Data Ki Line Lagao!" ka sabse sahi definition kya hai?

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