Yuliia Shtohryn JulkaIII-zz

Primitive Types & Reference Types in JavaScript

An explanation of JavaScript's pass-by-value, which is unlike pass-by-reference from other languages.

JavaScript has 2 kinds of variable types: primitive and reference.
A fixed amount of memory is reserved after creation of every variable.
When a variable is copied, it's in-memory value is copied.
Passing a variable to a function via a call also creates a copy of that variable.

// jQuery
$(document).ready(function() {
  // code
})

	// tools
	import React from "react"
	import styled from "styled-components"

	// styles
	const Dots = styled.span`
	&::after {
	display: inline-block;
	animation: ellipsis 1.25s infinite;
	content: ".";

	function generateAlphabets() {
	var alphabets = [];
	var start = 'A'.charCodeAt(0);
	var last = 'Z'.charCodeAt(0);
	for (var i = start; i <= last; ++i) {
	alphabets.push(String.fromCharCode(i));
	}

	return alphabets.join('');
	}

	jQuery( function( $ ) {
	if ( 'undefined' === typeof FB )
	return;

	if ( $( 'body' ).hasClass( 'single-post' ) \|\| $( 'body' ).hasClass( 'page' ) ) {
	var $comments_div = $( '<div/>' );
	$comments_div.addClass( 'fb-comments' );
	$comments_div.attr( 'data-href', document.location );
	$comments_div.appendTo( $( '.primary-content' ) );