Data Types - Beau teaches JavaScript

Learn about the seven data types in JavaScript ES6 (ECMAScript 6).

Code

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[Galejandro]

great tutorial
but i think it is a lot much easier to understand Object type:

var myCar = {
make = "Ford",
model = "Mustang"
};

[jjjayj]

When do we use Symbol..exactly..? Excuse me could you write a brief example, please??

[johnandersmith]

Hey thanks for this I've been studying javascript till I got up to this thanks for clarifying these.

[BitterMonday]

Need more explanation on symbol and objects

[stepbystepscience]

In the first example you did have to say....if(data === true)    I guess it just assumes true first???

[JamesTindall]

var a = function(){}; console.log(typeof a);

[fkzwjsp]

What's the point of:
var myNumber = null;
when:
var myNumber = 0;
takes fewer keystrokes?

[sarfaraz]

<script type="text/javascript">
var name1 = Symbol("Description 1");
var name2 = Symbol("Description 2");
name1 = "John"
name1 = "Smith"
console.log(name1);
</script>
If the value are unique than why John is overwriting Smith What is the use of Symbol in this code?

[rahulbawa]

Hi Beau. Thanks for putting so much effort into this . This tutorial is just amazing.

I have a question. Why does plus operator and multiplication operator behave differently when used with a null value.

1 + null = 1;
but
1 * null = 0;

[briancox]

Do these videos follow along with the original JS track or the new beta JS track better?

[drdzdd]

Bean means beautiful in French ! Where did you get that name you lucky guy

[astronaftis]

Q: At 6mins, are .make and .model the properties of the Object?

Thank you for your videos!

[jatinc]

Thanks for these tutorials, big fan of FCC. Ok, the undefined and Null is not, ahem, well defined. :). Speaking from what I have learnt from FCC itself, here is an e.g. of undefined -a bit different from Null.
var test = function(a, b) {
a+b;
}
console.log(test(1, 2)); //this will give you undefined

[shopir]

Hi, nice video, I wonder what text editor are you using?

[ToriKo_]

Objects in JS seem to work like how I guess you would use a dictionary in Python

[lawrencekin]

any code editor will do just fine for Javascript

[JordanWayman]

The real question is how many people from The odin project are here? 🤔 TOP RULES!

[ptaczek]

Hi, there is no data type null in javascript. If you declare a variable without initialization, it's type is "undefined". But if you initialize the variable to null, it's type is "object". As you said, null is a value that means "no value". Null is not a data type.

[smyasir]

GRAND SUMMARY

Booleans - Watch in video.

Null - means nothing or zero if you do math with it ! Use when some variable has no value assigned to them.

Undefined - is not similar to null. means that a variable has either not been declared at all OR has been declared but holds no value. yield NaN if you do math with it. Is NOT zero.

Number - Watch in video.

Symbols - Their instances are unique and immutable. so if two symbols,

sym1 = Symbol ("foo") and sym2 = Symbol ("foo") are compared; sym1 === sym2, it will give false.
if you typecast them both to string, it will give true ! but typecasting to string also means that it will print like "Symbol(foo)" in console ...

Object - It is a collection of properties. Properties themselves are key-value pairs.

[juancarlosortega]

console.log("algo que seria genial, es que tuviera subtitulo en español.");