JavaScripteasyJavaScript

Email Validation

Validates if email address format is correct

The problem

Need to validate user input email address format

The solution

JavaScript

function validateEmail(email) {
  const regex = /^[^s@]+@[^s@]+.[^s@]+$/;
  return regex.test(email);
}

Parameters

emailstring

Email address to validate

Put it to work

Example

console.log(validateEmail('[email protected]')); // true
console.log(validateEmail('invalid-email')); // false
console.log(validateEmail('[email protected]')); // true
console.log(validateEmail('[email protected]')); // true

Keep going

Related moves.

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Password Validator

Validate password strength with configurable rules

function validatePassword(password, options = {}) {
  const defaults = {
    minLength: 8,
    requireUppercase: true,

#password#validation

medium

02JS↗

Debounce Function

Prevents a function from being called too frequently, executes only the last call

function debounce(func, delay) {
  let timeoutId;
  
  return function(...args) {

#function#performance

medium

03JS↗

Throttle Function

Limits a function to be executed only once per specified time period

function throttle(func, limit) {
  let inThrottle;
  
  return function(...args) {

#function#performance

medium