How do I manipulate arrays

In JavaScript, arrays can be manipulated using various methods and properties. Here are some common ways to manipulate arrays:

push() - Adds one or more elements to the end of an array.
pop() - Removes the last element from an array and returns that element.
shift() - Removes the first element from an array and returns that element.
unshift() - Adds one or more elements to the beginning of an array.
splice() - Adds or removes elements from an array at a specified index.
slice() - Returns a shallow copy of a portion of an array into a new array object.
map() - Creates a new array populated with the results of calling a provided function on every element in the calling array.
filter() - Creates a new array with all elements that pass the test implemented by the provided function.
reduce() - Executes a reducer function on each element of the array, resulting in a single output value.

Here's an example of how to use some of these methods to manipulate arrays:


        // Create an array
        let fruits = ["apple", "banana", "cherry"];

        // Add an element to the end
        fruits.push("date"); // ["apple", "banana", "cherry", "date"]

        // Remove the last element
        let lastFruit = fruits.pop(); // returns "date"

        // Add an element to the beginning
        fruits.unshift("orange"); // ["orange", "apple", "banana", "cherry"]

        // Remove the first element
        let firstFruit = fruits.shift(); // returns "orange"

        // Splicing the array
        fruits.splice(1, 1, "grape"); // ["apple", "grape", "cherry"]

        // Using map
        let lengths = fruits.map(fruit => fruit.length); // [5, 5, 6]

JavaScript Arrays Array Manipulation push pop shift unshift splice slice map filter reduce

How do I manipulate arrays

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How do I manipulate arrays

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