Mern Stack Development Training by Experts

;

Our Training Process

Mern Stack Development - Syllabus, Fees & Duration

Module 1: Introduction to React

  • What is React?
  • Why React?
  • React version history
  • React 16 vs React 15
  • Just React – Hello World
  • Using create-react-app
  • Anatomy of react project
  • Running the app
  • Debugging first react app

Module 2: Templating using JSX

  • Working with React. create Element
  • Expressions
  • Using logical operators
  • Specifying attributes
  • Specifying children
  • Fragments

Module 3: About Components

  • Significance of component architecture
  • Types of components
  • Functional
  • Class based
  • Pure
  • Component Composition

Module 4: Working with state and props

  • What is state and it significance
  • Read state and set state
  • Passing data to component using props
  • Validating props using prop Types
  • Supplying default values to props using default Props

Module 5: Rendering lists

  • Using react key prop
  • Using map function to iterate on arrays to generate elements

Module 6: Event handling in React

  • Understanding React event system
  • Understanding Synthetic event
  • Passing arguments to event handlers

Module 7: Understanding component lifecycle and  handling errors

  • Understand the lifecycle methods
  • Handle errors using error boundaries

Module 8: Working with forms

  • Controlled components
  • Uncontrolled components
  • Understand the significance to default Value prop
  • Using react ref prop to get access to DOM element

Module 9: Context

  • What is context
  • When to use context
  • Create Context
  • Context Provider
  • Context Consumer
  • Reading context in class

Module 10: Code-Splitting

  • What is code splitting
  • Why do you need code splitting
  • React lazy
  • Suspense
  • Route-based code splitting

Module 11: hooks

  • What are hooks
  • Why do you need hooks
  • Different types of hooks
  • Using state and effect hooks
  • Rules of hooks

Module 12: Routing with react router

  • Setting up react router
  • Understand routing in single page applications
  • Working with Browser Router and Hash Router components
  • Configuring route with Route component
  • Using Switch component to define routing rules
  • Making routes dynamic using route params
  • Working with nested routes
  • Navigating to pages using Link and NavLink component
  • Redirect routes using Redirect Component
  • Using Prompt component to get consent of user for navigation
  • Path less Route to handle failed matches

Module 14: Immutable.js

  • What is Immutable.js?
  • Immutable collections
  • Lists
  • Maps
  • Sets

Module 17: Unit Testing

  • Understand the significance of unit testing
  • Understand unit testing jargon and tools
  • Unit testing react components with Jest
  • Unit testing react components with enzyme

Module 18: Web pack Primer

  • What is web pack
  • Why web pack
  • Install and setup web pack
  • Working with web pack configuration file
  • Working with loaders
  • Working with plugins
  • Setting up Hot Module Replacement

Module 19: Isomorphic React

  • What is server-side rendering (SSR)?
  • Why SSR
  • Working with render To String and render To Static Markup methods

Syllabus -> React JS
This syllabus is not final and can be customized as per needs/updates
IT Courses / Internship

Module 1: Introduction to Node.js

  • What is Node.js
  • Features of Node.js
  • Concept
  • Where to fit and not fit
  • Event-Driven programming style
  • What is Asynchronous

Module 2: Installation / Setup

  • Local environment setup
  • Node.js runtime
  • Download source code
  • Installation on OS
  • Verify

Module 3: Node Package Manager

  • Install module by NPM
  • Global vs Local setup
  • Update Module
  • CRUD Module

Module 4: Express Framework

  • What is Express
  • Setup Express
  • Request And Response
  • Handling Routes
  • Route Middleware
  • Objects
  • Cookies Management
  • File upload
  • HTTP methods

Module 5: Buffers and Streams

  • What is buffers and Streams
  • Benefit of Streams over buffers
  • Create / Write / Read operation on Buffers
  • Process on Buffers
  • Read / Write data by Streams
  • Pipeline
  • Chaining Stream

Module 7: REST API

  • RESTful Architecture
  • HTTP URI and Methods
  • RESTful web services
  • Expose solution as API
  • Best practice for REST API solution

Module 8: Callback

  • What is Callback
  • Benefit of Callback
  • Asynchronous communications
  • Block and Non-Blocking
  • Standard Callback pattern
  • Async Flow control Library
  • Executing in parallel

Module 9: Events

  • What is Events
  • Events types
  • Event Emitter API
  • Multiple event listeners
  • Event emitter pattern
  • Class methods
  • Event Loop
  • Blocking Event Loop
  • Escaping Event Loop

Module 10: Connecting with Database

  • Introduction of MySQL
  • Connect with MySQL
  • Introduction of MongoDB
  • Features of MongoDB
  • Connect with MongoDB
  • Defining a schema
  • Defining a Model

Module 11: External Processes and Services

  • What is processes
  • Spawning Child process
  • Create and kill processes
  • Building with HTTP Severs
  • HTTP requests
  • Secure HTTP Server

Module 12: External Processes and Services

  • Using Test Runner
  • Using Assertion Testing Module
  • Built-in Debugger
  • Console log
  • Node Inspector

Syllabus -> Node JS
This syllabus is not final and can be customized as per needs/updates
IT Courses / Internship

Module 1 : INTRODUCTION EXPRESS JS

  • The model-view-controller pattern
  • Defining Jade templates
  • Configuring Express
  • Postman configuration
  • Using REST
  • JSON Data
  • Reading POST data
  • CRUD operations
  • Adding middleware

Module 2 : EXPRESS JS WITH MONGODB AND SQLITE

  • Connecting to RDBMS and Mongodb databases
  • Performing CRUD operations
  • Module 3 : SOCKET.IO, THE FRONT-END, AND A CHAT APP

    • Getting Started
    • Adding Socket.io To Your App
    • Exploring The Front-end
    • Sending Live Data Back & Forth
    • Creating The Front-end UI
    • Showing Messages In App
    • Working With Time
    • Timestamps
    • Show Message Time In Chat App
    • Chat application Project

    Module 4 : INTRODUCTION TO TASK MANAGERS WITH UNIT TESTING

    • Working with gulp
    • Working with grunt
    • Working with unit and E2E testing

    Module 5: LEARNING EXPRESS ROUTES

    • starting a server
    • Writing your first route
    • Sending a response
    • Macthing route paths
    • Getting a single expression
    • Setting status codes
    • Macthing longer paths
    • Other HTTP methods

    Syllabus -> Express JS
    This syllabus is not final and can be customized as per needs/updates
    IT Courses / Internship

    Module 1: Introduction to NoSQL

    • What Is NoSQL?
    • Why NoSQL databases are required
    • Types of NoSQL Database
    • NoSQL vs SQL Comparison
    • ACID & BASE Property
    • CAP Theorem
    • Benefits of NoSQL databases
    • Installation
    • Start and Stop the MongoDB process

    Module 2: MongoDB Architecture

    • Document, Collection, Databases
    • JSON and BSON
    • Storage Engines
    • Read Path
    • Journaling
    • Write Path
    • Working Set
    • Capped Collection
    • Oplog collection
    • TTL Index
    • GridFS

    Module 3: CRUD Operations

    • MongoDB Data Types
    • Inserting, Update, Deleting the documents
    • Querying the documents
    • Bulk insert operation
    • Updating multiple document
    • Limiting documents
    • Filtering documents

    Module 4: Schema Design and Data modeling

    • Dynamic Schema
    • What is Data modeling?
    • RDBMS and MongoDB Data modeling difference
    • Embedding Document
    • Reference Document

    Module 5: Indexes

    • Index concepts in MongoDB
    • Types of indexes
    • Indexes and its use cases
    • Creating Indexes
    • Managing Indexes
    • Index strategies

    Module 6: Database Administration in MongoDB

    • Database status
    • Troubleshooting issues
    • Current Operations
    • Rotating log files
    • Users and Roles
    • Copy and Clone database
    • DB and Collection Stats
    • Explain plan
    • Profiling
    • Changing configuration files
    • Upgrading the database

    Module 7: MongoDB: Backup and Security

    • Concept of backups
    • mongoexport/mongoimport
    • mongodump/mongorestore
    • Oplog backups
    • LVM Backups
    • Backups using MMS/Ops Manager
    • Purpose of security
    • Authentication and authorization
    • Role based access control

    Module 8: Replication in MongoDB

    • Concept of replication
    • ReplicaSet member roles
    • Voting and Electing primary
    • Role of Oplog in replication
    • Read and Write Concern
    • Arbiter,Hidden and Delayed replica node
    • Priority settings
    • Replicaset nodes health check
    • Concept of resyncing the nodes
    • Rollbacks during failover
    • Keyfile authentication

    Module 9: MongoDB Scalability

    • Concept of Scalability
    • Sharding concept
    • Shardkey and Chunks
    • Choosing shardkey
    • Sharding components
    • Types of Sharding
    • Balanced data distribution
    • Sharded and Non-sharded collection
    • Sharded Replicaset
    • Tag aware sharding

    Module 10: MongoDB Monitoring and Other Tools

    • MMS Manager
    • Ops Manager
    • Mongo utility commands
    • Mongo developer tools
    • MongoDB Atlas
    • MongoDB client drivers

    Syllabus -> MongoDB
    This syllabus is not final and can be customized as per needs/updates
    IT Courses / Internship
     
    10000+
    20+
    50+
    25+

    Mern Stack Development Jobs in Charlotte

    Enjoy the demand

    Find jobs related to Mern Stack Development in search engines (Google, Bing, Yahoo) and recruitment websites (monsterindia, placementindia, naukri, jobsNEAR.in, indeed.co.in, shine.com etc.) based in Charlotte, chennai and europe countries. You can find many jobs for freshers related to the job positions in Charlotte.

    • mern stack developer
    • mern stack
    • mern stack programmer
    • reach js developer
    • node js developer
    • express js developer
    • mern stack expert
    • mern stack fresher
    • full stack developer
    • mongo db

    Mern Stack Development Internship/Course Details

    Mern Stack Development internship jobs in Charlotte
    Mern Stack Development Node. React JS is formed via means of Facebook and is the most efficient solution for front-end developers of mobile and web apps. Be it web development or mobile application development, developers intimate with JavaScript can effortlessly learn ReactJS. js is an open-source platform as well, that will increase flexibility that helps in building real-time network applications. js has a huge opportunity today and tomorrow. The availability of Node. These operations when combined with additional options give nice results. Thus the basic syntax and specifications are of JavaScript only. The modular design of ReactJS allows you to produce small fluctuations with ease. Node Package Manager (NPM) is one of all the world’s prime package registries.

    Meet a Few of our Industry Experts 🚀 Your Pathway to IT Career

    virang

    Mobile: +91 91884 77559
    Location: Daman and Diu, Online (Charlotte)
    Qualification: MCA

    Experience: html css python basic sql  more..

    Pooja

    Mobile: +91 89210 61945
    Location: Madhya Pradesh, Online (Charlotte)
    Qualification: BTech

    Experience: Skills- python django mysql Html CSS I have 6 month experience in python django   more..

    Harpreet

    Mobile: +91 91884 77559
    Location: Madhya Pradesh, Online (Charlotte)
    Qualification: Bba

    Experience: Manual testing Functional testing Testcases execution  more..

    Puja

    Mobile: +91 8301010866
    Location: West Bengal, Online (Charlotte)
    Qualification: Btech

    Experience: I have 9 months of experience in Manual testing Beside that I am ISTQB Foundation level certified tester |   more..

    Gautam

    Mobile: +91 91884 77559
    Location: Karnataka, Online (Charlotte)
    Qualification: BE in Mechanical

    Experience: I have in total 1 year of experience in Multiple domain I have worked as design engineer trainee for 6  more..

    Divyanshu

    Mobile: +91 89210 61945
    Location: GHAZIABAD, Online (Charlotte)
    Qualification: MCA

    Experience: Manual testing test casesApplication for Software Testing  more..

    Pallavi

    Mobile: +91 98474 90866
    Location: Karnataka, Online (Charlotte)
    Qualification: mba

    Experience: As an SEO Executive I specialize in optimizing websites to achieve higher search engine rankings and drive organic traffic My  more..

    Amarnath

    Mobile: +91 8301010866
    Location: Uttar Pradesh, Online (Charlotte)
    Qualification: B.tech

    Experience: I am currently pursuing b tech in information technology I have good grip on full stack web development both front  more..

    Gojuru

    Mobile: +91 9446600368
    Location: Telangana, Online (Charlotte)
    Qualification: Bachelor of science

    Experience: Iam passionate towards my job have that hardworking nature to complete the work with the time eager to learn new  more..

    Jyoti

    Mobile: +91 8301010866
    Location: Madhya Pradesh, Online (Charlotte)
    Qualification: Btech

    Experience: I have 3 5 years of experience in quality and 1 3 years of experience in design I am good  more..

    Soubarniya

    Mobile: +91 8301010866
    Location: Maharashtra, Online (Charlotte)
    Qualification: BSc IT

    Experience: One of my most notable projects involved designing and implementing an automated CI CD pipeline using Jenkins Docker and Kubernetes  more..

    Akshara

    Mobile: +91 8301010866
    Location: Maharashtra, Online (Charlotte)
    Qualification: BE Computer engineering

    Experience: Skills: java html testing |   more..

    Aman

    Mobile: +91 98474 90866
    Location: Karnataka, Online (Charlotte)
    Qualification: BE

    Experience: Django python C++ HTML CSS JavaScript  more..

    monisha

    Mobile: +91 98474 90866
    Location: Gujarat, Online (Charlotte)
    Qualification: B.arch

    Experience: I have 3 years experience in AutoCAD I'm working in MEP design department in Vadodara With proper 3d design and  more..

    Binitha

    Mobile: +91 91884 77559
    Location: Irinjalakuda, Online (Charlotte)
    Qualification: Btech

    Experience: Manual testing automation testing load testing api testingApplication for Software Testing  more..

    Ajay

    Mobile: +91 8301010866
    Location: Chennai , Online (Charlotte)
    Qualification: B.TECH IT

    Experience: Proven experience as a Software Test engineer |Knowledge and experience in automated testing tools Selenium Java OOPS POM |Familiarity with  more..

    Arun

    Mobile: +91 91884 77559
    Location: Kerala, Online (Charlotte)
    Qualification: B.Sc Multimedia

    Experience: wordpress HTML CSS JavaScript reactjs Bootstrap woocommerce Mysqli |   more..

    Bhargavi

    Mobile: +91 91884 77559
    Location: Salem, Online (Charlotte)
    Qualification: B.Tech

    Experience: Have basic knowledge on python and Django Application for Python Django  more..

    sejal

    Mobile: +91 98474 90866
    Location: Maharashtra, Online (Charlotte)
    Qualification: Btech

    Experience: A full-stack developer proficient in the Frappe framework possesses expertise in both front-end and back-end development They excel in utilizing  more..

    Avani

    Mobile: +91 9895490866
    Location: Madhya Pradesh, Online (Charlotte)
    Qualification: B.E

    Experience: Manual testing Test cases Test scenerios Test Report Bug trackingb |   more..

    Eswar

    Mobile: +91 91884 77559
    Location: Tamil Nadu, Online (Charlotte)
    Qualification: B.E - CSE

    Experience: Experience with web application and network penetration testing I've experience with bug bounty as well I've 2 years of work  more..

    Surjyakanta

    Mobile: +91 89210 61945
    Location: West Bengal, Online (Charlotte)
    Qualification: Bachelor

    Experience: Graphic design Typography Poster making Social media designs Web UI design   more..

    Tamanna

    Mobile: +91 91884 77559
    Location: Punjab, Online (Charlotte)
    Qualification: Bachelors of vocational studies in software development

    Experience: My educational background has provided me with a solid foundation in software development principles and I am proficient in programming  more..

    Akash

    Mobile: +91 89210 61945
    Location: Karnataka, Online (Charlotte)
    Qualification: BCA

    Experience: Backend - Django Flask Database - MySql MongoDB Frontend - HTML CSS JS REACT(basic) Other skills - version control (git)  more..

    Vivek

    Mobile: +91 91884 77559
    Location: Uttar Pradesh, Online (Charlotte)
    Qualification: Masters

    Experience: Extensive experience teaching German to students of various proficiency levels from beginners to advanced learners I have lived and studied  more..

    Neha

    Mobile: +91 89210 61945
    Location: Aurangabad Maharashtra, Online (Charlotte)
    Qualification: Bachelor of engineering

    Experience: Python programming Tableau MySQL  more..

    Vishakha

    Mobile: +91 8301010866
    Location: Maharashtra, Online (Charlotte)
    Qualification: Bachelor of engineering

    Experience: Manual testing Jira Microsoft Excel Slack Basic knowledge of SQL  more..

    Kartik

    Mobile: +91 91884 77559
    Location: Chandigarh, Online (Charlotte)
    Qualification: Bechlors of engineering CSE

    Experience: I am working as a junior python developer at Sparkbrains pvt ltd I develop backend using django framework i have  more..

    Chetan

    Mobile: +91 91884 77559
    Location: Karnataka, Online (Charlotte)
    Qualification: BE

    Experience: SQL manual testing java automation testing |   more..

    Ebciba

    Mobile: +91 89210 61945
    Location: Tamil Nadu, Online (Charlotte)
    Qualification: BE

    Experience: Hello recruiter I learned SQL and web development Java and basically know about Autocad and excel I have one year  more..

    Jacob

    Mobile: +91 91884 77559
    Location: Tamil Nadu, Online (Charlotte)
    Qualification: B.tech IT

    Experience: Skills: 1)Html 2)Css 3)Javascript Experience: Had a six months internship in software testing in creditmantri finserve  more..

    Fahiza

    Mobile: +91 98474 90866
    Location: Tamil Nadu, Online (Charlotte)
    Qualification: bcom

    Experience: typist tally prathmic hindi programming   more..

    Hemlata

    Mobile: +91 8301010866
    Location: Haryana, Online (Charlotte)
    Qualification: Mca

    Experience: I am frontend web developer with skills html css bootstrap jQuery javascript  more..

    Manisha

    Mobile: +91 91884 77559
    Location: Delhi, Online (Charlotte)
    Qualification: BCA

    Experience: -> Front-end web development -> MySQL -> Good communication skills  more..

    Pranjal

    Mobile: +91 9446600368
    Location: Maharashtra, Online (Charlotte)
    Qualification: Masters in science

    Experience: I have 1 5+ years of experience in the testing field having command of various types of testing including manual  more..

    sarath

    Mobile: +91 9446600368
    Location: tirur, Online (Charlotte)
    Qualification: BCA

    Experience: python Django Html css Mysql Restapis AjaxApplication for Python Django  more..

    Gopal

    Mobile: +91 9446600368
    Location: Maharashtra, Online (Charlotte)
    Qualification: Bsc data science

    Experience: I work as Technical support Engineer At anglo eastern ship management I have skill set like networking and hardware troubleshooting  more..

    Anuka

    Mobile: +91 91884 77559
    Location: West Bengal, Online (Charlotte)
    Qualification: Masters

    Experience: Graphic designer Poster designer Banner design Carousel post Video editor  more..

    Bommesha

    Mobile: +91 91884 77559
    Location: Karnataka, Online (Charlotte)
    Qualification: BE

    Experience: I'm Bommesha M currently working as an Associate Test Engineer at Trinity Mobility Pvt Ltd with 1 7 years of  more..

    Samriti

    Mobile: +91 91884 77559
    Location: Haryana, Online (Charlotte)
    Qualification: Mca

    Experience: Python Java C C++ Basics knowledge of html css javascript php  more..

    Madhu

    Mobile: +91 98474 90866
    Location: Tamil Nadu, Online (Charlotte)
    Qualification: BE

    Experience: I've completed a course in manual testing and I've worked in a project which is related to testing |   more..

    Divyani

    Mobile: +91 9895490866
    Location: Madhya Pradesh, Online (Charlotte)
    Qualification: B.Tech

    Experience: Java python Html CSS Javascript SQL PLSQL   more..

    Jinila

    Mobile: +91 9446600368
    Location: Kerala, Online (Charlotte)
    Qualification: BSC Computer science

    Experience: Currently I'm working as a developer in Inspironz IT solutions Before that I was worked as instructor in softzane solutions  more..

    Murali

    Mobile: +91 8301010866
    Location: Salem, Online (Charlotte)
    Qualification: Degree

    Experience: I have 4 year experience in graphic design field and also Design tutor for Nan muthalvan scheme  more..

    Christine

    Mobile: +91 91884 77559
    Location: Maharashtra, Online (Charlotte)
    Qualification: BSc. I.T. ,M.C.A.

    Experience: Web developer adept in JavaScript PHP HTML CSS Bootstrap MySQL Proficient in WordPress and Shopify with strong problem-solving skills   more..

    Abhijith

    Mobile: +91 98474 90866
    Location: kottayam, Online (Charlotte)
    Qualification: bca

    Experience: manual testing sdlc stlc  more..

    Ch.

    Mobile: +91 89210 61945
    Location: Andhra Pradesh, Online (Charlotte)
    Qualification: Degree

    Experience: Web page design photo shop html css javascript adobexd  more..

    Rakhi

    Mobile: +91 91884 77559
    Location: Ernakulam, Online (Charlotte)
    Qualification: MCA

    Experience: Web development SEO Google Ads Google Analytics Social Media Marketing Online Marketing Keyword Search   more..

    Yuvraj

    Mobile: +91 91884 77559
    Location: Uttar Pradesh, Online (Charlotte)
    Qualification: Pursuing Graduation

    Experience: Data analytics SQL POWER BI MS Excel MS Office Many English debates and sports achievements H1B Visa project using SQL  more..

    Abhishek

    Mobile: +91 98474 90866
    Location: Uttar Pradesh, Online (Charlotte)
    Qualification: MCA

    Experience: Have Experience in wordpress(ACF custom theme builder like elemetor divi WPbakery braver builder) 3 year in Html css bootstrap jQuery  more..

    Yuvasri

    Mobile: +91 98474 90866
    Location: Tamil Nadu, Online (Charlotte)
    Qualification: B.tech IT

    Experience: I'm Yuvasri writing to apply for a reason job opening for the position of ‘software testing’ The position and responsibilities  more..

    ANJALI

    Mobile: +91 89210 61945
    Location: Kerala, Online (Charlotte)
    Qualification: B.Tech in Electronics and Biomedical Engineering

    Experience: Cambridge O level Maths and Science (Physics Chemistry Biology)Teaching Preparation of lesson plans academic coordination Well- versed in ICT oriented  more..

    TALLURI

    Mobile: +91 9446600368
    Location: chagallu, Online (Charlotte)
    Qualification: btech

    Experience: html css js react js Application for Python Django  more..

    Shashank

    Mobile: +91 89210 61945
    Location: Karnataka, Online (Charlotte)
    Qualification: B.E CSE

    Experience: Testing Types: Manual Testing and Automation Testing Automated Testing Tools: Selenium Java Testing Framework: TestNG Data Driven Testing by using  more..

    Rutuja

    Mobile: +91 89210 61945
    Location: Maharashtra, Online (Charlotte)
    Qualification: BE IT

    Experience: Hello I am Rutuja Zurange Currently I am pursuing graphic design course by komal agrawal she is director at flair  more..

    Jebon

    Mobile: +91 98474 90866
    Location: Udupi, Online (Charlotte)
    Qualification: MCA

    Experience: I have a experience in Django web framework python HTML5 CSSApplication for Python Django  more..

    sarang

    Mobile: +91 98474 90866
    Location: Kerala, Online (Charlotte)
    Qualification: BCA

    Experience: completed BCA in 2023 and followed it up with a 6 month development course from SDC(Ernakulam) I have the ability  more..

    Abhijith

    Mobile: +91 98474 90866
    Location: Kerala, Online (Charlotte)
    Qualification: BCA

    Experience: all attach in my resume dart flutter firebase networking html css  more..

    Nancy

    Mobile: +91 89210 61945
    Location: Himachal Pradesh, Online (Charlotte)
    Qualification: B tech

    Experience: Technical skills-Web Developer front end html css c++ python Worked as a Content Writer for college Club  more..

    Arun

    Mobile: +91 91884 77559
    Location: Delhi, Online (Charlotte)
    Qualification: Bachelor's degree

    Experience: I am proficient in three languages: Tamil (native) Hindi (native level proficiency) and English I have 6 months of experience  more..

    Success Stories

    The enviable salary packages and track record of our previous students are the proof of our excellence. Please go through our students' reviews about our training methods and faculty and compare it to the recorded video classes that most of the other institutes offer. See for yourself how TechnoMaster is truly unique.

    Photos of Training / Internships

    Internship/projects in charlotte
    Internship/projects in charlotte
    Internship/projects in charlotte
    Internship/projects in charlotte
    Internship/projects in charlotte
    Internship/projects in charlotte
    Internship/projects in charlotte
    Internship/projects in charlotte
    Internship/projects in charlotte
    Internship/projects in charlotte
    Internship/projects in charlotte
    Internship/projects in charlotte

    Trained more than 10000+ students who trust Nestsoft TechnoMaster

    Get Your Personal Trainer