How to reverse an Array?

Reversing an array in JS is really simple with the standard array method. Like below

const str = ['a', 'b', 'c', 'd', 'e'];
console.log(str.reverse());
// Output: > Array ["e", "d", "c", "b", "a"]

Without using reverse() method:

const str = ['a', 'b', 'c', 'd', 'e'];
const str1 = [];
  for (let i = str.length - 1; i >= 0; i--) {
str1.push(str[i]);
  }
console.log(str1);
// Output: > Array ["e", "d", "c", "b", "a"]

Có thể bạn đã miss một số snippets code

encode/decode base64 with JS

Encoding to base64 is done with the btoa command

promise in javascript

closure javascript

Spread Operator for Objects

Using the spread operator during an Object declaration will assign the properties of the referenced Object to the new Object.

Lấy tháng hiện tại trong javascript