Summary of JavaScript Strict Comparisons

Now, if you want to do the opposite, which is asserting something is not equal to, you could use the exclamation point with the equal sign, right? Remember that. So for example, if you have three not equals to the string as a three, well, if you think about in terms of types, this is a number, this is a string, you would think it would be not equal, right? But actually it's going to say what? False. Okay, this guy is equal to that. So it's kind of like not really strict. So three is not equal to the string three, and it's giving false. But if you want to be really strict, these guys are not the same because even though they have the same value, this guy has the type number and this guy has the type string. So technically this should be true, right? Because they actually don't have the same type, even though they have the same value. So you can add one more equals and it's going to be true. So three is not equal, strictly equal to the string three, that's true. Okay, so that's strict comparison JavaScript. So typically as you're developing in the real world, you want to use always, whenever you can always start off with the triple equals when you're making comparisons that will make you your code like less prone to bugs because you know exactly what kind of types you expect. It's not like you expect a string or you expect a number and you don't know which one is coming through. So always make sure to start as a best good practice to start with the triple equals when you want to make a comparison and or the not the exclamation point with the two equal signs to make not equal to strict comparison. So that's a good practice. I want you to remember. And yes, there might be cases, very few exceptions where you can use this guy and this guy, but keep those special cases, but always make sure to start off with the triple comparison operators. Okay, so that is it. Just reviewing what we did. We learned that JavaScript is a bit loose when it comes to comparison. If you use the triple, if you use the double equal or the exclamation point equal to compare things to say, are they, is this the same as that? Is this different from that? Then it's kind of a bit loose when it comes to comparing numbers with numbers inside strings, right? As we saw before. So to make that a little bit less stricter, right, we only use the strict comparison operators add one more equal sign there, one more equal sign there, and that will also will make the comparison be not only about the value, but also about the type of the things you're comparing. Okay, if you want to have more reference on this, as we mentioned before, there's always the good documentation out there online. So let's minimize this. Now do a search here for JavaScript strict comparisons. For example, let's see if we get anything. We got this MDN page. So you can see strict comparison triple equals is only true if the upper ends are of the same type and the contents match. So that's exactly what we talked about. Get some examples here. So if you ever forget what we talked about, just come here and have a look at the examples to see how these guys do. You can run it. You can see the output here so on, right? And there's some details here. And each operator equality, inequality. We did that strict equality. That's what we talked about in this lesson. And you can see returns to the upper end are strictly equal with no type conversion. That's the key here. We will not try to convert that like for example, this number inside a string to an actual number and then it will turn out to be true if it were only two equals. You can see here no identity, a strict inequality. We talked about that too. Okay. You can see an example here. We did. And so on. Okay, so keep that in mind. Always reference these wonderful documentation. Thank you so much for watching and until the next time. Bye.