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Welcome back, everyone.

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Now I have some good news and some bad news.

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Let's start off with the bad news.

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The bad news is that in Yes, 2021, which is the latest version of JavaScript, the changes to the

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language there aren't that many.

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There aren't that many new, exciting features you can Google East 2021 features, and a lot of them

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are obscure features that most likely you won't encounter in your day today.

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Now, the good news is that while you don't have to learn a whole lot of new features, as a matter

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of fact, there's one important one that I'm going to show you in this video, but that's it.

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Nice and easy.

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Isn't that nice?

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Nice.

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Quick VIDEO.

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So let's see how quickly we can do this.

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Let's say I have a string here.

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I'll call it SDR for string.

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And Oh, I like this one.

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The XHTML is the best of the best.

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So let's make that into a strength, so our strengths as ZM as the best of the best.

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I'm a little bit biased here.

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Well, let's go along with it.

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So with a new feature in Yes, 2021, we have something that we can use on all strengths.

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It's a method that we can use on all strengths.

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So if I do the string dot replace, oh, look at that, it already pops up, replace all what it does.

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It allows me to replace something inside the string.

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So let's say I want to change best in the string.

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So let's say best and I want to change that to worst.

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So if I replace that string that I get, Zeitoun is the worst of the worst.

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Well, that's a little bit rude, but that's what we got with replaceable.

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If I do string here.

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Zeitoun is the best of the best, and that's because we didn't really assign this to anything the original

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string remains.

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But the new string, so I could have done something like this.

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I could have assigned it and I could have said Konst, be equals.

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This and now be is XHTML as the worst of the worst?

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I definitely don't like this one.

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I like the other one better.

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Now that's it.

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Yes, 2021, this is all we really got.

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I mean, it's pretty nice to have a fun little side effect.

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JavaScript actually used to have something called replace already.

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So we could have done cost, see, shrink and replace.

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There used to be part of all JavaScript, so it's not anything new.

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But with this one, the problem with this one is it only changed the first instance of the word.

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So you can see here is ITM is the worst of the best.

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A little bit better, but definitely, definitely not the best of the best.

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So anyway, fun, little fact, fun, little tidbit.

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Yes, 2021, we have this replace.

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Oh OK.

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I managed to make this video way too long for what this really is.

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Pretty easy, right?

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All right.

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Go grab a coffee and I'll see you in the next one.

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Bye bye.