Today i continued learning Javascript and explored several useful array methods.
1.length
the length property tells us how many elements are in an array.
let Laptops = ["Hp","lenovo","dell","orange"];
console.log(fruits.length);
2. toString()
Converts an array into a string.
console.log(fruits.toString());
3. join()
console.log(fruits.join(" - "));
4.delete()
The delete operator can remove an element from an array, but it leaves an empty space.
5. concat()
Combines two or more arrays.
`let a = ["Apple", "Banana"];
let b = ["Orange", "Mango"];
let result = a.concat(b);`
6. flat()
Converts a nested array into a flatter array.
`let numbers = [1, 2, [3, 4], [5, 6]];
console.log(numbers.flat());`
7. push()
Adds an element to the end of an array.
fruits.push("Mango");
8. unshift()
Adds an element to the beginning of an array.
fruits.unshift("Mango");
9. pop()
Removes the last element from an array.
fruits.pop();
10. shift()
Removes the first element from an array.
fruits.shift();
11. splice()
Used to add, remove, or replace elements in an array.
fruits.splice(1, 1);
12. slice()
Creates a new array containing a selected portion of an array.
let result = fruits.slice(1, 3);
13. copyWithin()
Copies part of an array to another position within the same array.
let numbers = [1, 2, 3, 4, 5];
numbers.copyWithin(2, 0);
Top comments (1)
Array.length is not actually the same thing as the number of elements in the array.
Array.length Is NOT What You Think It Is