JavaScript Variables and Data Types #fullstackroadmap (Ep. 3)

This is part of my Frontend Web Development Course for Beginners. Learn the basics of HTML, CSS, and JavaScript to build a solid foundation for web development.

You can find resources and other information for this video at the Full Stack Foundations link below:

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Connect with me:

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Timestamps:

0:00 Full-stack series intro
0:42 100 Days of code challenge
2:09 Intro to JS variables
7:47 What is a variable?
12:30 Declaration vs. Assignment
14:15 var vs. const vs. let keywords
20:10 Variable naming conventions
24:00 JavaScript "Style Guides"
27:33 Left vs. right side of variable expression
31:55 Static vs. dynamic typed coding languages
37:00 "string" data type
38:15 "number" data type
38:54 "boolean" data type
39:09 "array" data type
42:45 "object" data type
47:44 "function" data type (technically an "object")
49:14 Summary of JavaScript variables
51:43 5 Practice Challenges

[jeremytworoger]

I have watched several classes on JavaScript, some I've even paid for, and I must stay the way you teach is far superior. I felt like I was able to execute the challenges at the end without feeling stupid using the VS Code and the Console. I was extremely motivated after reviewing my code with the answers you provided in your gitHub. Thank you!

[mahtalah]

So far my dude you are an amazing teacher I absolutely love the stings of knowledge you let hang and if we want to learn more you tell us where to get it. Thank you

[AOWANDERS]

Currently enrolled in a bootcamp for front end software development, and I couldn't be more frustrated at the verbiage used to deliver the course material. Thank you so much for using English words that don't force me to refer to a dictionary every few seconds. This 15 minute video helped me to grasp the concept a 1 1/2 hour live class video, entire week of posting questions on slack, hours and hours of google research couldn't. I don't speak W3schools or MDN Mozilla yet, and I honestly don't understand why everyone expects me to after 3 weeks of exposure to this. So thank you for delivering this in a tone that was easy to digest for a beginner that desperately needed this to continue my learning to code journey.

[joshuabrown]

greatly worded and taught! Thank you tons!

[iseckleos]

This man is going to save my life. WOW the best tutorial I have seen by FAR !

[gouravagarwalpriyal]

You are doing good job, very well explained! learned many new things from you. Thank you and please continue your good work.

[fun_iqp]

Man, I don't know what is it that you have, but finally I'm liking this thing of coding (and specially front-end) and even I'm using masterfully this Notion app, a thing I thought I could ever do. I just feel you are pretty real about the subject and not just teaching for the fact of teaching.. it's strange, haha. Anyway, I got here thanks to freeCodeCamp, and I couldn't be more happy, you have one more subscriber. Let's keep this momentum rolling :)

[ghoritauheed]

Thankyou very much. IDK but if I successfully land as a web developer, then for sure you are one of those people in my journey who gave the push on the back that i need !!. Thankyou very very very much and keep doing what you are doing ❤❤

[zacharybryce]

Hi Zach. I really like the videos. I graduated from a coding bootcamp a few months ago, and I’ve come to realize that I have to keep practicing or I’ll forget what I’ve learned. I’m looking forward to this course as a refresher!

[chemseddinbennaceur]

first thing thank u for all of this informations =)
now the last challenge the three wrong things are :
Const SomeNumber = 20; ( there is no espace between some and Number this is the first mistak
2/ the number 50 is wrong the true is 20
and the 3 wrong thing is : there is no = in the last code bcz the result donne withiout it no ( = )
i hope u answer me if its true or im wrong

[shafiullah]

Giving exercise question as a challenge is a great way of teaching. Done with challenges...

[shafiullah]

Appreciated. Data Types are explained well.

[theoneprince]

So far is interesting and to the point thank you…

[huyhoang]

Love it man, Hope you can make it as indie

[eelick]

Thanks for all the knowledge Zach your channel is elite level :)

[pentree]

When starting a project with JavaScript, why not always use "let" when making variables, since you don't know if you might need to change the value down the line?

[pentree]

My impression was that most web development tutorials start with HTML and CSS, then Javascript.

I'm curious, why did you start with javascript first?

[alangarcia]

for anyone wondering, concatenate is programmer talk for "link" or "join"

[setyourhandle_]

I do not have twitter cuz my parents did not allow me.

[vaughanmacegan]

Can someone please answer this question. Ok I have a question about Challenge 1 Number 10 @51:46 in the video. I have spent a lot of time on it and I cannot figure outhow I go about getting the value/string of 'Hello World' to show up at all. Using the suggested solution of:



only gets 'myString' showing as the result and not 'Hello World' the same thing occurs in the Object we created but I am not worried about that as of now. Would someone please tell me what I am doing wrong and how I go about getting the 'value' of 'Hello World' to show. I feel so stupit that I cannot do such a simple thing 😪.
Thankyou and Regards.