bongoDev

Loading...

Empowering technology learners worldwide with professional online live trainings. Transform your IT career with expert-led courses.

Facebook Instagram LinkedIn Github

Company

About Us
Careers
Blog
Events

Legal

Privacy Policy
Refund Policy
Terms and Conditions

Contact us

[email protected]
01757258398 01978367094 01576641348
01757258398

Our office

Flat 5/A, Shimanto Plaza, Plot #26/D, Main Road-03, Section #11, Mirpur, Dhaka 1216

© 2026 bongoDev. All rights reserved. | ই-ট্রেড লাইসেন্স: TRADEDNCC/015304/2024

Courses Job Success

Blog Events Free Assessment Login

bongoDev | Modern Runtime Features & Feature Detection - JavaScript Hands-On Learning Pro — Zero to Intermediate in 30 Days

TopicJavaScript Hands-On Learning Pro — Zero to Intermediate in 30 Days

01Your 30-Day JavaScript Learning System: Read, Predict, Run, Break & FixPreview
02JavaScript vs ECMAScript vs Browser vs Node.js
03Install Node.js, Verify the Runtime & Use the REPL
04Editor, DevTools, Terminal & Project Layout
05Statements, Expressions, Comments & Your First Script
06Variables: `const`, `let`, `var` & Mutation
07Primitive Values, `typeof`, `null` & `undefined`
08Numbers, `Math`, `NaN`, Infinity & BigInt
09Strings, Template Literals & Unicode-Aware Thinking
10Conversion, Coercion, `===` vs `==` & Truthful Types
11Operators, Precedence & Short-Circuit Evaluation
12Truthy/Falsy Values, `if` / `else if` / `else`
13`switch` & Explicit State Handling
14Arrays: Ordered Collections & Safe Updates
15Objects: Model Real Engineering Data
16Nested Data, Optional Fields & Defensive Access
17Loops: `for`, `while`, `break` & `continue`
18`for...of`, `for...in`, `Object.entries()` & `enumerate` Thinking
19Array Methods: `map`, `filter`, `find`, `some` & `every`
20Week 1 Project: System Health Evaluator
21Functions: Declarations, Expressions & First-Class Values
22Arrow Functions & Lexical `this`
23Parameters, Defaults, Rest & Spread
24Return Values, Scope & Closures
25Destructuring, Property Shorthand & Computed Properties
26Optional Chaining & Nullish Coalescing
27`Map` & `Set`: Keyed Collections and Uniqueness
28`reduce`, Sorting, `flatMap` & Mutation Awareness
29Week 2 Project: Server Inventory Manager
30Browser DOM: Select, Read & Update the Page
31Browser Events, Forms & User Input
32Safe Browser Rendering: Text vs HTML
33Browser `fetch`: HTTP, JSON & Failure Checks
34Browser Storage: `localStorage`, `sessionStorage` & Data Boundaries
35Browser Project: Production Service Dashboard
36ES Modules: `import`, `export` & Module Boundaries
37ES Modules vs CommonJS in Node.js
38`package.json`, `npm init` & Project Metadata
39npm Dependencies vs Dev Dependencies
40Semantic Versioning, `package-lock.json` & `npm ci`
41npm Scripts, `npx`/`npm exec` & Repeatable Tooling
42Node Core Modules: `fs`, `path`, `process` & `URL`
43Files & JSON with `fs/promises`
44Process Arguments, Standard Streams & Exit Codes
45`try` / `catch` / `finally` & Error Boundaries
46Custom Errors, `cause` & Failure Contracts
47Stack Traces & a Scientific Debugging Workflow
48Browser DevTools Debugging: Sources, Network & Storage
49Node.js Debugging: `debugger`, Inspector & VS Code
50Structured Logging for JavaScript Applications
51Callbacks & Inversion of Control
52Promises: Pending, Fulfilled, Rejected & Chaining
53`async` / `await`: Readable Asynchronous Control Flow
54Async Error Boundaries & Unhandled Rejections
55Promise Combinators: `all`, `allSettled`, `race` & `any`
56Event Loop, Tasks, Microtasks & Execution Order
57Sequential vs Concurrent Async Work
58Async Iteration & `for await...of`
59Node.js `fetch`: Build a Real API Client
60Timeouts with `AbortController` & `AbortSignal`
61Retries, Exponential Backoff & Jitter
62Week 3 Project: Log Analyzer & API Health Checker
63Designing Command-Line Interfaces without Framework Magic
64Prototypes & the JavaScript Object Model
65Classes, Private Fields & Encapsulation
66`this`, `bind`, `call` & `apply`
67Composition over Inheritance for Application Design
68Higher-Order Functions, Closures & Functional Building Blocks
69Pure Functions, Side Effects & Immutable Updates
70Iterables, Iterators & Generators
71Regular Expressions for Logs, Validation & Extraction
72Date, Time Zones, `Intl` & Temporal Awareness
73Symbols, `globalThis` & Protocol Hooks
74Modern ECMAScript: ES2015+ Feature Map & Compatibility Thinking
75Dynamic `import()`, Top-Level `await` & Import Attributes
76Environment Configuration, Secrets & Secure Defaults
77Modern Runtime Features & Feature Detection
78JavaScript Security Fundamentals for Engineers
79Testing with Node’s Built-In `node:test`
80Async Testing, Dependency Injection & Mocks/Fakes
81ESLint, Prettier, JSDoc & Automated Quality Checks
82Robust JavaScript Engineering: Validate, Bound, Retry, Clean Up
83Week 4 Capstone: DevOps Automation Toolkit
84Capstone Productionization: Validation, Tests, CI & Failure Drills
85JavaScript Debugging & Troubleshooting Playbook
86JavaScript Tooling Cheatsheet & 30-Day Graduation Checklist

Englishবাংলা

Knowledge Hub/JavaScript Hands-On Learning Pro — Zero to Intermediate in 30 Days/Modern Runtime Features & Feature Detection

JavaScript Hands-On Learning Pro — Zero to Intermediate in 30 Days

Paid lesson · Intermediate · 40 min read

Modern Runtime Features & Feature Detection

Use newer standardized capabilities only after checking the runtime contract and providing safe fallback behavior.

This lesson is locked

This lesson is part of the paid course.

View free previews

PreviousEnvironment Configuration, Secrets & Secure DefaultsLocked NextJavaScript Security Fundamentals for EngineersLocked

Discount price

৳ 320.00৳ 120.00Save ৳ 200.00