WEBVTT 1 00:00:01.198 --> 00:00:02.288 Welcome back. 2 00:00:02.288 --> 00:00:03.276 So, in this lecture, we're gonna get 3 00:00:03.276 --> 00:00:04.371 a quick overview of 4 00:00:04.371 --> 00:00:07.236 what's new in ES6 or ES2017, 5 00:00:07.236 --> 00:00:09.017 which is actually the official name. 6 00:00:09.017 --> 00:00:10.864 But everyone just calls it ES6, 7 00:00:10.864 --> 00:00:13.281 simply because it came right after ES5. 8 00:00:13.281 --> 00:00:14.263 And, so that's what I'm gonna 9 00:00:14.263 --> 00:00:16.810 do for the rest of the course. 10 00:00:16.810 --> 00:00:18.568 So, before we start, just a quick 11 00:00:18.568 --> 00:00:20.166 recap of what we already talked 12 00:00:20.166 --> 00:00:22.173 about right in the first section. 13 00:00:22.173 --> 00:00:24.104 So right now we have all these modern 14 00:00:24.104 --> 00:00:25.889 javascript versions that we can use 15 00:00:25.889 --> 00:00:28.025 in production, as long as we transpile 16 00:00:28.025 --> 00:00:31.897 and polyfill the codes back to ES5, right? 17 00:00:31.897 --> 00:00:34.198 And I'm going to show you how to do exactly that 18 00:00:34.198 --> 00:00:36.637 in one of the next sections, okay? 19 00:00:36.637 --> 00:00:39.290 So we're actually going to use ES7 and ES8 20 00:00:39.290 --> 00:00:41.822 also in the next sections, but for now I want to 21 00:00:41.822 --> 00:00:44.737 start by really focusing on ES6 in this 22 00:00:44.737 --> 00:00:46.824 section, because remember, that's the 23 00:00:46.824 --> 00:00:48.925 version that brought us a ton of updates 24 00:00:48.925 --> 00:00:52.187 and new features to a language. 25 00:00:52.187 --> 00:00:53.565 And so here is what we're going 26 00:00:53.565 --> 00:00:55.565 to cover in this section. 27 00:00:55.565 --> 00:00:57.348 So we'll start with the two new 28 00:00:57.348 --> 00:00:58.773 ways of declaring variables in 29 00:00:58.773 --> 00:01:00.932 javascript and that's let and const, 30 00:01:00.932 --> 00:01:03.086 and then move on to blocks and IIFEs, 31 00:01:03.086 --> 00:01:05.427 use string methods, and then arrow 32 00:01:05.427 --> 00:01:08.645 functions which is a ute and amazing topic. 33 00:01:08.645 --> 00:01:10.136 After that we're gonna talk about 34 00:01:10.136 --> 00:01:12.250 destructuring, new array methods, 35 00:01:12.250 --> 00:01:13.745 the spread operator, 36 00:01:13.745 --> 00:01:16.126 and rest and default parameters 37 00:01:16.126 --> 00:01:17.759 before we finally move on to the 38 00:01:17.759 --> 00:01:19.041 big and important topics of 39 00:01:19.041 --> 00:01:21.378 maps, classes, and subclasses. 40 00:01:21.378 --> 00:01:23.274 Now there are two other extremely 41 00:01:23.274 --> 00:01:25.399 important ES6 features that we're gonna 42 00:01:25.399 --> 00:01:26.599 talk about a bit later because they 43 00:01:26.599 --> 00:01:28.287 need some more background knowledge 44 00:01:28.287 --> 00:01:30.214 and that is promises for dealing 45 00:01:30.214 --> 00:01:32.126 with asynchronous javascript and 46 00:01:32.126 --> 00:01:33.895 native javascript modules to a 47 00:01:33.895 --> 00:01:36.790 separate or code into different files, okay? 48 00:01:36.790 --> 00:01:39.188 Alright, and so that's it for the intro. 49 00:01:39.188 --> 00:01:42.355 Let's now move on to the real coding.