Ajax30

const addUp = (...numbers) => {
  var sum = 0;
  numbers.forEach(function(item) {
    sum = sum + item;
  });
  return sum;
}

console.log(addUp(1, 5, 6));

Ajax30

<?php
Class User {
    public $first_name;
    public $last_name;
    public $email;
    public function setUserData($first_name, $last_name, $email){
        $this->first_name = $first_name;
        $this->last_name = $last_name;
        $this->email = $email;
    }

Ajax30

// Enter Mongo
Access `C:\Program Files\MongoDB\Server\4.2\bin` via CMD

// Enter mongo mode
mongo

// Show databases
show dbs

// Create and switch to database

Ajax30

<?php
class Database
{
    public $host = DB_HOST;
    public $username = DB_USER;
    public $password = DB_PASS;
    public $dbname = DB_NAME;
    
    public $link;
    public $error;

Ajax30

<?php
  $sql = 'SELECT * FROM people';
  $result = $db->query($sql);
  $numrows = $result->rowCount();
  ?>
<table>
  <tr>
    <th>First name</th>
    <th>Last name</th>
    <th>Gender</th>

Ajax30

<?php
	try {
		$con = new PDO('mysql:host=127.0.0.1;dbname=db_name','db_user','myPass');
	} catch (PDOException $e) {
		die("Database connection failed.");
	}
?>

Ajax30

function addArrayMembers(arr) {
  sum = 0;
  arr.forEach(function(el, index) {
    return sum = sum + arr[index];
  });
  return sum;
}
var arr = [1, 3, 5, 7];
addArrayMembers(arr);

Ajax30

function fact() {
  arr = [];
  var n = arguments[0];
  if (n == 0) {
    arr.push(1);
  } else {
    for (i = 1; i <= n; i++) {
      arr.push(i);
    }
  }

Ajax30

function add(){
	// Create an array from the functions arguments object
  // then sum the array members using reduce
	var sum = Array.from(arguments).reduce(function(a, b){
  	return a + b;
  });
  console.log(sum);
}
// You can now add as many numbers as you like
// just by passing them to the function

Ajax30

function add(){
	var sum = 0;
  // Use "the arguments object" to add up all the arguments 
  // passed to a function
	for (i=0; i<arguments.length; i++){
  	var sum = sum + arguments[i];
  }
  console.log(sum);
}
// You can now add as many numbers as you like