Learn JavaScript from scratch by solving over a hundred different coding challenges. Go here for the interactive browser version: https://scrimba.com/learn/learnjavascriptCodeTwo versions: Interactive version: https://scrimba.com/learn/learnjavascript GitHub repo: https://github.com/scrimba/learn-javascriptCreated by Per Harald Borgen. Per on Twitter: https://twitter.com/perborgen 00:00 Intro 03:41 Passenger counter app 04:39 Setting up file 07:42 Create variable 12:27 Mathematical operations 16:16 Reassigning & incrementing 19:23 Adding button 21:41 onclick event listener 25:10 Using functions to write less code 28:48 First function 29:34 Function that logs sum 32:25 Function that increments 34:23 Increment on clicks 36:35 Display count 41:53 Document Object Model 43:47 Display count w/ innerText 44:30 Create save button 46:40 What is string? 48:16 First string variable 52:00 Log greeting to console 53:18 Strings vs. Numbers 56:07 Render welcome message 58:10 Improve message w/ string concatenation 1:00:28 Use plus equal for count 1:00:57 Create save feature 1:05:38 Debugging online 1:09:31 Set count to 0 1:12:28 Recap 1:15:47 Variables practice 1:17:42 Concatenate strings 1:18:43 Incrementing & decrementing 1:20:56 Strings & numbers 1:22:35 Rendering error message 1:25:52 Calculator challenge ​ Build Blackjack Game 1:31:27 Build Blackjack game 1:32:27 Add firstCard, secondCard, & sum 1:33:23 If...else conditionals 1:39:08 if...else statement 1:42:05 if/else...if/else statement 1:45:28 if...else statement for our game 1:47:32 hasBlackJack variable 1:49:38 isAlive variable 1:51:27 Practice boolean conditions 1:54:55 Add message variable 1:58:20 Link stylesheet 2:00:56 Add basic styling 2:05:19 Make start button work 2:11:13 Display message 2:13:48 Display sum 2:19:36 Display cards 2:21:34 New card button 2:25:16 Add to sum when newCard is clicked 2:28:36 Rename startGame function 2:30:52 Solving our cards problem w/ array 2:34:12 Arrays intro 2:39:30 Array indexes 2:43:50 Arrays w/ multiple data types 2:46:12 Adding & removing items from arrays 2:50:35 Creating cards array 2:51:43 Push new card to array 2:53:05 Counting 2:57:10 Loops 3:00:37 For loops & arrays 3:04:23 First array-based for loop 3:05:55 For loops, arrays, & DOM 3:08:55 Use loop to render cards 3:11:16 Avoid hard-coding values 3:12:51 Returning values 3:17:54 Use function to set card values 3:21:05 Generating random numbers w/ Math.random() 3:25:24 Math.random() * 6 3:27:11 Flooring number w/ Math.floor() 3:28:40 Create dice 3:30:23 Completing dice function 3:33:04 Make getRandomCard() work 3:36:00 getRandomNumber function 3:39:06 Assign values in startGame function 3:41:52 Card feature is broken 3:42:54 Logical AND operator 3:46:39 Logical operators 3:48:47 logical OR operator 3:51:52 Only trigger newCard() if you're allowed to 3:53:23 Object sneak peek 3:58:02 Objects 4:02:47 Create first object 4:06:08 Store player data 4:08:48 Methods on object 4:10:50 Recap 4:15:17 Objects & functions 4:17:21 if else 4:20:13 Loops & arrays 4:22:21 push, pop, unshift, shift challenge 4:25:50 Logical operators 4:27:50 Rock papers scissors 4:30:52 Sorting fruits Build Chrome Extension 4:33:54 Build Chrome Extension 4:38:30 Add button & input tag 4:40:06 Style button & input tag 4:47:28 Make input button work w/ onclick 4:48:49 Refactor to addEventListener 4:51:11 addEventListener() 4:52:58 Refactoring 4:54:25 Create myLeads array & inputEl 4:56:49 Using let & const 5:00:11 Push to myLeads array 5:01:24 Push value from input field 5:03:56 Use for loop to log out leads 5:05:38 Create unordered list 5:07:39 Render leads in unordered list 5:11:22 How to render li elements w/ innerHTML 5:13:01 innerHTML 5:14:34 More innerHTML practice 5:16:26 Render li elements w/ innerHTML 5:17:37 Use createElement() & append() instead of innerHTML 5:21:16 Improving performance of our app 5:24:37 Create render function 5:26:40 Clear input field 5:28:47 Add a tag 5:35:53 Template strings 5:35:54 Write template string 5:36:28 Make template string more dynamic 5:37:12 Template strings on multiple lines 5:41:03 Refactor app to use template string 5:42:19 Style list 5:46:13 Preparing deployment 5:51:08 Deploying Chrome Extension 5:53:40 What is localStorage? 5:56:45 First localStorage 6:00:38 Storing arrays in localStorage 6:07:05 Save leads 6:09:36 Get leads 6:13:31 Truthy & falsy values 6:21:28 Guess expression: truthy or falsy? 6:23:52 Checking localStorage before rendering 6:27:33 Style delete button 6:30:52 Make delete button work 6:35:12 How function parameters can improve our code 6:41:09 Write function parameter 6:44:40 Functions w/ multiple params 6:47:54 Numbers as function params 6:49:40 Arguments vs Params 6:53:06 Arrays as params 6:55:02 Refactor renderLeads() to use parameter 6:56:46 Create tabBtn 7:00:07 Save tab url 7:02:46 Get current tab 7:07:09 Use Chrome API to get tab 7:13:32 Deploy final version 7:15:48 Recap 7:21:34 Practice 7:41:55 Outro