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Tip 1: Signal Unchanging Values With const

Tip 2: Reduce Scope Conflicts with let and const

Tip 3: Isolate Information with Block Scoped Variables

Tip 4: Variables to Readable Strings with Template Literals

Manage Data Collections with Arrays

6 Lessons

Tip 5: Create Flexible Collections with Arrays

Tip 6: Check Existence in an Array with Includes()

Tip 7: Mold Arrays with the Spread Operator

Tip 8: Avoid Push Mutations with the Spread Operator

Tip 9: Avoid Sort Confusion with the Spread Operator

Maximize Code Clarity with Special Collections

8 Lessons

Tip 10: Use Objects for Static Key-Value Lookups

Tip 11: Create Objects Without Mutations Using Object.assign()

Tip 12: Update Information with Object Spread

Tip 13: Update Key-Value Data Clearly with Maps

Tip 14: Iterating over Key-Value Data with Map & Spread Operator

Tip 15: Create Maps Without Side Effects

Tip 16: Keep Unique Values with Set

Write Clear Conditionals

4 Lessons

Tip 17: Shorten Conditionals with Falsy Values

Tip 18: Check Data Quickly with the Ternary Operator

Tip 19: Maximize Efficiency with Short Circuiting

Simplify Loops

9 Lessons

Tip 20: Simplify Looping with Arrow Functions

Tip 21: Write Shorter Loops with Array Methods

Tip 22: Create Arrays of a Similar Size with map()

Tip 23: Pull Out Subsets of Data with filter() and find()

Tip 24: Apply Consistent Actions with forEach()

Tip 25: Combine Methods with Chaining

Tip 26: Transform Array Data with reduce()

Tip 27: Reduce Loop Clutter with for...in and for...each

Clean Up Parameters and Return Statements

5 Lessons

Tip 28: Create Default Parameters

Tip 29: Access Object Properties with Destructuring

Tip 30: Simplify Key-Value Assignment

Tip 31: Passing Variable Number of Arguments with Rest Operator

Build Flexible Functions

6 Lessons

Tip 32: Write Functions for Testability

Tip 33: Reduce Complexity with Arrow Functions

Tip 34: Focused Parameters with Partially Applied Functions

Tip 35: Combine Currying & Array Methods for Partial Application

Tip 36: Prevent Context Confusion with Arrow Functions

Keep Interfaces Clear with Classes

7 Lessons

Tip 37: Build Readable Classes

Tip 38: Share Methods with Inheritance

Tip 39: Extend Existing Prototypes with Class

Tip 40: Simplify Interfaces with get and set

Tip 41: Create Iterable Properties with Generators

Tip 42: Resolve Context Problems with Bind()

10.

Access External Data

5 Lessons

Tip 43: Retrieve Data Asynchronously with Promises

Tip 44: Create Clean Functions with Async/Await

Tip 45: Make Simple AJAX Calls with Fetch

Tip 46: Maintain State Over Time with LocalStorage

11.

Gather Related Files with Component Architecture

6 Lessons

Tip 47: Isolate Functionality with Import and Export

Tip 48: Leverage Community Knowledge with npm

Tip 49: Build Applications with Component Architecture

Tip 50: Use Build Tools to Combine Components

Tip 51: Leverage CSS for Animations

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