Array Methods in Javascript

Introduction to JavaScript Arrays:

• Arrays store multiple values in a single variable.
• Can hold different data types.
• Indexed starting from 0.
• Ex: array=[1,2,3,4,5]
• Creating an empty array.Ex: arr=[];
• Creating an array and initialise it.

---

Adding or Removing Items:

• push(): Adds an element to the end.
• pop(): Removes the last element.
• shift(): Removes the first element.
• unshift(): Adds an element to the beginning.
• length: Returns the number of elements.

---

Iteration Methods:

• ForEach(): Executes a function for each element.

• map(): Creates a new array by applying a function.

• Reduce():Accumulates values into a single element.

Searching and Filtering:

• filter():Returns all matching elements.
  

• find():Returns first element that satisfies the condition.

Extracting / Copying:

• Slice(): Extracts a portion of an array.

Updated Section: Modifying and merging arrays

• splice() – Add, Remove, or Replace (Mutates Original)

• concat() – Merge Arrays (Does NOT Mutate Original)

Conclusion:

• Enhance efficiency and readability to the code.
• Useful for adding,removing, searching,iterating and transforming data.
• JavaScript provides powerful array methods.