How Can I Convert a JavaScript Array into an Object?

Convert an Array to an Object

Converting an array into an object requires assigning values from the array to keys in the object. This task can be accomplished in several ways using JavaScript.

ECMAScript 6 Object.assign() Method

ECMAScript 6 introduces the Object.assign() method, which simplifies the process:

Object.assign({}, ['a', 'b', 'c']); // {0:"a", 1:"b", 2:"c"}

In this example, an empty object is created and values are copied from the array to the new object using Object.assign().

ES8 Spread Syntax

ES8 introduces spread syntax, which can also be used to convert an array to an object:

{...['a', 'b', 'c']}

This syntax creates an object with keys corresponding to the array elements and assigns the values accordingly.

reduce() Method

For more complex key-value assignments, the reduce() method can be used:

['a', 'b', 'c'].reduce((a, v) => ({...a, [v]: v}), {}) 
// { a: "a", b: "b", c: "c" }

In this case, the array is iterated over using reduce(), and a new object is created with custom keys and values.

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