Kiểm tra định dạng email bằng Javascript

let isEmailAddress = val => {
	return /^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$/.test(val) || /w+([-+.]w+)*@w+([-.]w+)*.w+([-.]w+)*/.test(val);
}
console.log(isEmailAddress('gmail.com@.com'))//false
console.log(isEmailAddress('gmail.com@gm.com'))//true

promise in javascript

Rest Operator for Objects

Now we can use rest on the properties of an Object. It allows us to explicitly extract certain named variables, and assign any uncalled variables into a catchall Object.

Merge Array

How to combine two sorted arrays into one? We can do this easily with the spread operator.

Lấy ngày hiện tại trong javascript

Getting the last element of a split string array