Updated 27 Aug
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Intermediate JavaScript: Building Frontend Components
Gain insights into building real-world JavaScript components—dropdowns, auto-validating forms, autocomplete search, infinite scroll, and tooltips—to tackle common frontend challenges smoothly.
4.8
58 lessons
10h
Created by Educative
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What You'll Learn
- Design and build a JS dropdown menu with hover behavior, active state, and dynamic submenus
- Fetch and render server-driven menu content using HTTP methods, query params, and callbacks
- Implement an autocomplete search UI that requests, formats, and styles suggestions from a server
- Optimize autocomplete behavior with caching, request cancelation, and browser devtools debugging
- Build a Medium-style tooltip using the Selection API, ranges, and accurate positioning logic
- Create an autovalidating form with semantic HTML, regex rules, dynamic errors, and custom dropdowns
- Implement an infinite scrolling list with client-server pagination, loading states, and duplicate prevention
Learning Roadmap
2.
Building a Dropdown Menu
Building a Dropdown Menu
Unpack the core of building, styling, and dynamically populating dropdown menus using JavaScript.
3.
Building the Autocomplete Search
Building the Autocomplete Search
9 Lessons
9 Lessons
Work your way through building and styling an effective autocomplete search component using JavaScript.
4.
Building Tooltips
Building Tooltips
11 Lessons
11 Lessons
Grasp the fundamentals of building tooltips using JavaScript, CSS, and effective debugging.
5.
Building an Autovalidating Form
Building an Autovalidating Form
16 Lessons
16 Lessons
Take a closer look at building, validating, and testing dynamic, user-friendly auto-validating forms.
6.
Building an Infinite List
Building an Infinite List
8 Lessons
8 Lessons
Follow the process of building an infinite scroll list with dynamic loading and styling.
7.
From Toy Components to Production
From Toy Components to Production
4 Lessons
4 Lessons
Piece together the parts of resourcing, frameworks, and effective project structure to build production-ready applications.
Certificate of Completion
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Developed by MAANG Engineers
Trusted by 3.1 million developers working at companies
A
Anthony Walker
@_webarchitect_
E
Evan Dunbar
ML Engineer
S
Software Developer
Carlos Matias La Borde
S
Souvik Kundu
Front-end Developer
V
Vinay Krishnaiah
Software Developer
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