Lesson 4.10: JavaScript ES6 Features (let, const, arrow functions, template literals, etc.)
ES6 (ECMAScript 2015) introduced modern JavaScript features that make code cleaner, easier, and more efficient.
1. let and const
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let: Block-scoped variable, can be updated. -
const: Block-scoped constant, cannot be reassigned.
2. Arrow Functions
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Shorter syntax for functions.
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Does not have its own
this.
3. Template Literals
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Use backticks
to include variables and multiline strings.
4. Destructuring
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Extract values from arrays or objects into variables.
Array Destructuring
Object Destructuring
5. Default Parameters
6. Spread & Rest Operators
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Spread: Expand arrays or objects.
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Rest: Collect remaining parameters into an array.
7. Modules (Import/Export)
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Organize code into separate files.
✅ Summary:
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let & const for better variable control.
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Arrow functions for concise syntax.
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Template literals for dynamic strings.
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Destructuring, default parameters, spread/rest, and modules enhance code readability and efficiency.
