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What are arrow functions and when should I use them?

Asked on Jun 27, 2025

Answer

Arrow functions are a concise way to write functions in JavaScript, introduced in ES6. They are particularly useful for maintaining the lexical scope of "this" and for writing shorter function expressions.

// Traditional function expression
        const add = function(a, b) {
            return a + b;
        };

        // Arrow function
        const addArrow = (a, b) => a + b;

Additional Comment:

Arrow functions do not have their own "this" context; they inherit "this" from the parent scope.
They are ideal for non-method functions and callbacks, such as in array methods like "map", "filter", and "reduce".
They cannot be used as constructors and do not have a "prototype" property.
Use arrow functions for cleaner and more readable code when the function body is simple.

✅ Answered with JavaScript best practices.

Ask any question about JavaScript here... and get an instant response.

What are arrow functions and when should I use them?

Asked on Jun 27, 2025

Answer

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