Lesson 4.4: Arrays & Objects
Arrays and Objects are non-primitive data types in JavaScript used to store collections of data. Arrays store ordered lists, while objects store key-value pairs.
1. Arrays
a) Creating an Array
b) Accessing Elements
c) Modifying Elements
d) Common Array Methods
2. Objects
a) Creating an Object
b) Accessing Object Properties
c) Modifying Object Properties
d) Object Methods
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Objects can contain functions as values, called methods.
3. Arrays of Objects
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You can store multiple objects in an array.
✅ Summary:
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Arrays: Ordered lists of data; access using index; methods like
push,pop,shift,unshift. -
Objects: Key-value pairs; access using dot or bracket notation; can contain methods.
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Arrays of Objects: Useful for storing multiple structured data entries.
