szemate

Reguláris kifejezések

Speciális karakterek

• .: bármilyen karakter
• \s: üres hely karakter (space, tab, új sor)
• \d: számjegy
• \w: alfanumerikus karakter (angol ABC kis- és nagybetűi, számjegyek és _)
• \p{L}: mint a \w, de Unicode (ékezetes) karakter is lehet
• \S: bármilyen karakter, ami nem üres hely

szemate

// https://gist.github.com/szemate/537792a6cf39008d51192fc8a3034d9a

const toppings = [
  'ham',
  'salami',
  'mushroom',
  'spinach',
  'artichoke',
];

szemate

// The most common elementary algorithms in JavaScript 
'use strict';

const testNumbers = [8, 6, 3, 7, 3, 8, 4, 4, 9, 1, 2, 8];

// 1. Search

function contains(array, elemToFind) {
  for (let i = 0; i < array.length; i++) {
    if (array[i] === elemToFind) {

szemate

HTML to Plain Text Converter

Create a script that takes the name of a HTML file as a command line argument, and prints its visible content as plain text to standard output (to the terminal).

• Only the body contents should be printed.
• All HTML tags and indentation should be removed.
• Contents of block elements (<p>, <h#>, <div>) should be divided by empty lines.
• Line breaks (<br />) should be respeced.
• Only <br /> elements should be treated as line breaks, new line characters should not.

szemate

Pizza Generator

A pizza place offers the following toppings:

• ham
• salami
• mushroom
• spinach
• artichoke

szemate

How to resolve package-lock.json conflicts

It is not possible to resolve conflicts of package-lock.json in GitHub's merge tool and you need to do a manual merge.

1. Update the master branch with the latest changes:

   git checkout master
   git pull
   

2. Merge your feature branch into master:

szemate

Scrabble Word Scores Exercise

In this word game points are awarded based on the length of the word and the letters used. The user has to create a word from the letters in their hand. Their hand consists of 7 letters.

Could you create a function which returns the correct scores for the words played? The input is a list of words, and the output is an object where the keys are the words played and the values are the word points.

szemate

Feature branching exercise

The trainee who shares the screen

1. Fork https://github.com/szemate/git-branching-demo
2. Add the other trainees in the breakout room as collaborators (to the forked repository)

Everyone in the breakout room

3. Confirm yourself as a collaborator

szemate

API Exercise

We will discover the Chuck Norris Jokes API. The documentation can be found at https://api.chucknorris.io/.

1. Read the "Usage" section and try each endpoint in the browser.
2. Retrieve a random Chuck Norris fact related to movies. You will need to combine the data from two endpoints.

szemate

Fetch exercise

Create a dictionary page that shows word definitions from the Free Dictionary API. The API documentation can be found at https://dictionaryapi.dev/.

1. Open the developer tools in your browser and try the API with different words. Figure out how to get a definition from the returned JSON object.
2. Check what the response is when no definition is found.
3. Copy-paste index.html and script.js below into VSCode and open index.html with live server.
4. Complete script.js to show the first definition of the word from the input field when the user clicks the submit button. Don't forget to handle the case when no definition is found.
5. Stretch goal: include all definitions of the word and the example sentences.