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REFERENCEjavascript

javascript Documentation

📖 INDEX

# Accesability-Semantic-HTML

# Anonymous-Functions

# Arguments-Parameters

# Array-Destructuring

# Array-Methods

# Arrow-Functions

# Callback-Functions

# Core-Technologies-Advance-Knowledge

# Creating-Arrays

# Custom-Exceptions

# Debounce-Throttle

# Delete-Elements

# Destructuring

# Dev-Methodologies

# Element-Selection

# Elements-Access

# Elements-creation

# Elements-Manipulation

# Error-Objects

# Event-Listeners

# Export-by-Default

# finallyJavaScript

# Function-Declaration

# Function-Expressions

# Import-Export

# InheritanceJavaScript

# JavaScript-Advance-Functions

# JavaScript-Array-Object

# JavaScript-Arrays-Loops

# JavaScript-Async-Intro

# JavaScript-Async

# JavaScript-Basic-Syntax

# JavaScript-BOM

# JavaScript-Callbacks

# JavaScript-ClientvsServer

# JavaScript-Clousures

# JavaScript-Comments

# JavaScript-Common-Events

# JavaScript-Common-Methods

# JavaScript-Condicionals

# JavaScript-Console

# JavaScript-Control-Structure

# JavaScript-Data-types-Variables

# JavaScript-Dates-Time

# JavaScript-Dates

# JavaScript-Debugging-Tools

# JavaScript-Declaration

# JavaScript-DOM

# JavaScript-Embedded

# JavaScript-Errors-Intro

# JavaScript-Errors

# JavaScript-Event-Listener

# JavaScript-Events

# JavaScript-Export

# JavaScript-Fetch-API

# JavaScript-First-Steps

# JavaScript-Functions

# JavaScript-History

# JavaScript-How-works

# JavaScript-Inheritance

# JavaScript-Intro

# JavaScript-JSON-Works

# JavaScript-JSON

# JavaScript-Localstorage

# JavaScript-Loops

# JavaScript-Manipulation

# JavaScript-Modular

# JavaScript-Modules

# JavaScript-Objects

# JavaScript-Operators

# JavaScript-POO

# JavaScript-Promises

# JavaScript-Propagation

# JavaScript-Prototypes

# JavaScript-Redirects

# JavaScript-Return

# JavaScript-Scope

# JavaScript-Script

# JavaScript-Sets

# JavaScript-Storage

# JavaScript-Style-Modification

# JavaScript-Window-Location

# Logic-Operators

# Memory Management

# Modern-Libreries-Frameworks

# Modification-Methods

# Modify-Attributes

# Object-Creating

# Optimization-and-Build

# Problem-solving

# Recursive-Function

# Rest-Parameters

# Scope-Context

# Spread Operator

# State-Management

# Team-Work-and-Communication

# Template Literals

# this-JavaScript

# Version-Control

# What-is-JavaScript

# Recursive-Functions

# Array-Creation

# Selection-Methods-Alias

# Custom-Exceptions-Alias

# Scope-and-Context

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JS .splice()

The Swiss Army Knife of JavaScript Arrays.

splice_demo.js

✂️

Tutor: The splice() method changes the contents of an array by removing or replacing existing elements and/or adding new elements in place.

Splice Mastery Tree

The Parameter Breakdown

splice(start, deleteCount, ...items)

Start: Index to begin changing the array.
deleteCount: Number of elements to remove.
items: Elements to add to the array.

Logic Check

How do you remove 2 items starting from index 0?

splice(0, 2)splice(2, 0)splice(0, -2)

Article: Understanding Mutation

Unlike slice() or filter(), splice() is destructive. This means it changes the original array. In modern React development, this is often avoided in state management to prevent side effects, but it remains a high-performance tool for local array manipulation.