Arrow functions have a shorter syntax, don't have their own 'this' binding (they inherit from the enclosing scope), cannot be used as constructors, and don't have access to the 'arguments' object.
Arrow functions (ES6) differ from regular functions in several ways:
Syntax:
'this' binding:
Cannot be used as constructors:
No arguments object:
No prototype:
// Regular function
function add(a, b) {
return a + b;
}
// Arrow function variations
const add1 = (a, b) => { return a + b; };
const add2 = (a, b) => a + b; // implicit return
const double = n => n * 2; // single param, no parens
const greet = () => 'Hello!'; // no paramsArrow functions provide concise syntax for map, filter, reduce: arr.map(x => x * 2)
Arrow functions preserve 'this' context when used as class method callbacks
Cleaner async code with .then(data => processData(data)) syntax
Regular functions needed when dynamic 'this' binding is required for method calls
Build an interactive demo showing 'this' behavior in different function contexts
Practice converting callback-heavy code to clean arrow function chains