How can you efficiently prepend elements to an array in JavaScript?

Prepending Elements to an Array in JavaScript

Enhancing an array's functionality by prepending elements is a common requirement. While your current approach involves creating a new array and copying elements over, JavaScript provides a simpler and more efficient solution.

Introducing unshift

The unshift method is JavaScript's built-in tool for inserting elements at the beginning of an array. Similar to push, but operating on the opposite end, unshift takes any number of arguments as new elements.

This snippet prepend the value 34 to the array, yielding the desired result without the complexity of manually creating and copying arrays.

unshift and push: A Comprehensive Comparison

Method	Add Direction	Remove Direction	Start Operation	End Operation
push	End			X
pop		End		X
unshift	Start		X
shift		Start	X

Conclusion

Utilizing the built-in unshift method provides an efficient and concise way to add elements to the beginning of an array in JavaScript. Its simplicity and optimality make it the preferred choice for this task.

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