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CodeSignal

Modern JavaScript Syntax Foundations

via CodeSignal

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Overview

Upgrade from ES5-era JavaScript to modern (ES2015+) syntax. This course covers the everyday building blocks that make modern code concise and expressive: block-scoped variables, arrow functions, destructuring, spread/rest, optional chaining, nullish coalescing, and template literals (including tagged templates). By the end, you'll read and write idiomatic modern JavaScript fluently.

Syllabus

  • Unit 1: Modern Scoping and Functions
    • Upgrading Legacy Variable Scoping
    • Fix the Broken Method
    • Master Modern Function Syntax
    • Build a Modern Stopwatch
  • Unit 2: Modern JavaScript Destructuring
    • Unlock More From Your Objects
    • Unpack the Nested Layers
    • Organizing Lists and Function Inputs
    • Master Deep Data Unpacking
  • Unit 3: Spread and Rest Operators
    • Keep Your Original Data Safe
    • Polish the Syntax Flow
    • Merging and Gathering Data
    • Build Your Own Helper Library
  • Unit 4: Optional Chaining and Coalescing
    • Smarter Default Values
    • Prevent the Crash
    • Advanced Data Safety Patterns
    • Build a Safe Data Helper
  • Unit 5: Template Literals and Tags
    • String Building Made Better
    • Polishing the Tag Logic
    • Building a Secure Tag
    • Crafting a Custom Text Tag

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