In JavaScript, What Is The Method To Combine Two Arrays And Remove Duplicate Elements?

To merge two arrays and de-duplicate items in JavaScript, you can use the concat() method along with the Set object. Here’s an example:

const array1 = [1, 2, 3];
const array2 = [2, 3, 4];

// Merge arrays using concat() method
const mergedArray = array1.concat(array2);

// Create a new set with merged array
const uniqueArray = [...new Set(mergedArray)];

console.log(uniqueArray); // [1, 2, 3, 4]

In the example above, concat() is used to merge array1 and array2 into mergedArray. Then, a new Set is created using the Set constructor and passing in mergedArray as an argument. Finally, the spread operator (...) is used to convert the unique set values back into an array.

Note: The Set object only allows unique values, so any duplicated items are automatically removed.

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