This question explores JavaScript and addresses practical considerations related to: How can I merge two arrays without duplicates using ES6 features?

To merge two arrays without duplicates in JavaScript using ES6 features, you can utilize the Set object and the spread operator. const array1 = [1, 2, 3]; const array2 = [3, 4, 5]; const mergedArray = [...new Set([...array1, ...array2])]; console.log(mergedArray); // Output: [1, 2, 3, 4, 5] ADDITIONAL COMMENT: - The spread operator (...) is used to combine elements from both arrays into a new array. - The Set object automatically removes any duplicate values. - The final result is converted back to an array using the spread operator within an array literal. ✅

How can I merge two arrays without duplicates using ES6 features?

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How can I merge two arrays without duplicates using ES6 features?

Asked on Oct 02, 2025

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To merge two arrays without duplicates in JavaScript using ES6 features, you can utilize the Set object and the spread operator.

<!-- BEGIN COPY / PASTE -->
        const array1 = [1, 2, 3];
        const array2 = [3, 4, 5];

        const mergedArray = [...new Set([...array1, ...array2])];

        console.log(mergedArray); // Output: [1, 2, 3, 4, 5]
        <!-- END COPY / PASTE -->

Additional Comment:

The spread operator (...) is used to combine elements from both arrays into a new array.
The Set object automatically removes any duplicate values.
The final result is converted back to an array using the spread operator within an array literal.

✅ Answered with JavaScript best practices.

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How can I merge two arrays without duplicates using ES6 features?

Asked on Oct 02, 2025

Answer

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