JavaScript from Null: Chapter 2
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JavaScript from Null: Chapter 2

on Dec 11th 2009 with 52 comments
This entry is part 2 of 7 in the series javascript-from-null

The Full Series


javascript-from-null

Continuing on from chapter one, we’ll now take things a step further as we learn about primitive datatypes, operators, if statements, and naming conventions.

In this Screencast, you’ll Learn:

  • camelCase naming
  • Primitive data types: String, Number, Boolean
  • Difference between = and ===, and != and !==
  • How a string can have methods available to it, like toUpperCase() and length.
  • If statements.
  • JavaScript native functions: parseFloat, and encodeURIComponent
  • Basic Math operations
  • Incrementing numbers

Chapter 2: Data Types

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Ready to take your skills to the next level, and start profiting from your scripts and components? Check out our sister marketplace, CodeCanyon.

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Series Navigation«JavaScript from Null: Video SeriesJavaScript from Null: Chapter 3»

 
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I'm the editor of Nettuts+, and love making the process of building for the web as easy as possible. Also, I'm finishing up my latest book on Laravel Testing! If you want be friends, say hi on Twitter.  

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  • http://www.philohermans.com Philo Hermans

    Watching it now :)

  • Hassan

    Hello, Jeff! How come you stopped using the Windows Machine? lol
    and btw SC looks great will watch it and follow it.

    • http://www.jeffrey-way.com Jeffrey Way
      Author

      Hey Hassan – I still have my Windows setup. But I’ve become more comfortable with the Mac. :)

      • Hassan

        Oh i see! Well that is great :) Dad just bought me the new 27″ iMac.. feels weird at the moment but getting used to it.

      • Simon

        I think it culd be nice if you make some tasks we can do after we have learn what you have saying and showing us :)

        hope you understand my english :(

  • http://stuartregan.co.uk Stuart Regan

    Great stuff man, can’t wait for Chapter 3!

  • http://www.tyoinspired.com Jacob Tyo

    Your screencasts are digital awesome sauce.

    • http://www.jeffrey-way.com Jeffrey Way
      Author

      :)

    • Dougieladd

      Ha ha ha love that description… and of course… you are absolutely correct!!! :)

  • Johny

    Thanks Jeff.
    This time am 1st to comment Yay :)

    • Hassan

      No you aren’t lol.

    • arnold

      lol another fail

    • http://mayavps.com Omar

      big time

  • leo rapirap

    Thank you Jeffrey Way for taking time to create such great tutorials.

    I learned a lot from your tutorials, previously MySQLi prepared statements
    and now Javascript.

    • http://www.jeffrey-way.com Jeffrey Way
      Author

      Thanks! Glad to hear it. :)

  • http://chrisberthe.com/ chrisberthe

    What’s up with all the ads? :)

    • http://www.jeffrey-way.com Jeffrey Way
      Author

      The cc 15 second ads at the beginning help to offset the expenditures. :) You can always download a no-ads version from iTunes. :)

      • Charlotte

        On iTunes it seems you can only watch it instantly.
        Know of a way to download the actual video file?
        I wanted to watch it on the plane but won’t have an internet connection :(

  • http://www.kieranklaassen.com Kieran Klaassen

    great follow up!!!

  • http://www.jennieroutley.co.uk Jen

    This is great! Thanks as always Jeff.

    Jen

  • http://xsaiddx.0fees.net kosaidpo

    Hello

    great tut cant wait till next week and please dont use ur rap skills on the next episode Pwweeeeeeeees ;]

    tnx

  • Z

    I hope there’s no newbie that’s going to try and make a script with JS on code canyon with what you’ve taught up till now, I remember when I graduated in a computer science degree I told myself I was probably ready to start making awesome plugin’s etc, boy was I wrong, competition is ferocious, what I could write in 50 lines, someone else wrote it in 25.

    Just to say, there’s always some guy on top that will make you that awesome method in a recursive matter that will blow you away wondering how they come up with these things.

    Anyways, looking forward to the other chapters, I’ve already learned JS(Made a few board games), but I dwelled into PHP and C++ so I lost a lot of my shine.

    -Z

  • Andrew

    These Javascript tutorials are amazing, I really appreciate all your hard work. It really helps fill in the gaps that I have with the language.

    Thanks alot!

  • Hassan

    Jeff, can I send you a PSD file?

  • PhillipG

    Nice tutorial once again Jeff looking forward to getting a hold of the meaty JS next week ^^

  • http://arvindandrion.com Arvind

    You are GREAT!!!!! very helpful.

  • Giovanni

    Wish these had been around about a month or two ago while I was eating books trying to learn this, hehe.

    Very nice though, I’ll take these in when I need a refresh. They’re really great.
    Thanks, man.

    Looking forward to the next one(s).

    Peace

  • Praba

    Even I know bits & peaces, Thank you so much for the screencasts which is very useful to know all the basics.

  • http://sasa.po.gs sasa

    Thanks, Jeff.

  • http://sonergonul.com Soner Gönül

    Thanks..!

    They are great..!

  • http://www.sweettemplates.com John

    Great series for a n00b like me!! Jeff, can you recommend a good Javascipt book as well???

    Directed at beginners?

    • http://www.wdonline.com Jeremy McPeak

      Self-promo time! ;)

      Beginning JavaScript is good. I’m not biased or anything ;)

      • http://net.tutsplus.com Jeffrey Way

        Absolutely. John – you can buy it here: http://www.amazon.com/gp/product/0470525932/

      • Maddie

        Beginning JavaScript is a fantastic resource if you’re just starting out John! I use it for reference pretty much daily :)

  • http://www.ricardofilipe.com Ricardo Magalhães

    Good stuff as always. Can’t wait for some more elaborate stuff with Javascript. Thanks!

  • http://xandesigns.com Alex McCabe

    Jeff are you a coding God? I swear you know EVERYTHING. haha. thanks for this, I started watching it, and it suprised me how much I knew already (not alot) but hey, will continue to watch.

    Big help to the community. Thank you.

    • http://net.tutsplus.com Jeffrey Way

      Hey Alex – Not even close. I’m in awe of some of you guys.

  • Daniel

    Anyone know of a site that has a complete list of Javascript functions? I’ve searched, but to no avail.

  • http://matt-bridges.com Matt B

    Awesome tut, Jeff! You always seem to be on top of what we all need!

  • Maciej

    Great tutorial. Looking forward to watching next part soon. ;)

  • Eugene

    Omg. Sites always start fine, but then come Ads and all goes to …

  • http://brennannovak.com Brennan Novak

    These JS tutorials are great… but somehow I have the sneaking suspicion that despite promising 10 CodeIgniter tutorials, Jeffery Way is gonna leave us short at 7 :(

  • http://spotdex.com/ David Moreen

    I really thought that raw javascript was harder then this. Looking forward to installment #3 next week.

  • Micko

    Thanks for new chapter.

    I think you should also go through useful functions like addEventListener.

  • QoQ

    Thanks. Good work. I waiting for other tutorial. Thank you so much

  • http://tareq.wedevs.com Tareq

    Hello Jeff, you are just awesome and I am a great fan of yours :)

    I am waiting for a php tutorial of user management system with 4-5 user permission level which includes registration with email activataion, login etc. (Just like Joomla/Wordpress)

    We will be very glad to get it from you :D

  • Sergio Mercado

    Great series, i’m waiting for the next code igniter video :D

  • http://www.PhiCreations.com Fernando Bernall

    These tutorials are exceptional. Your teaching method is sound and easy to follow your thought patterns. Thank you for the tutorials.

  • http://reygcalantaol.com reyBorn

    I really appreciate this tutorial series. It caters from very basic going to advance.

  • gt

    2m45s “The string is converted to a number and appended to it” Don’t you mean the number is converted to a string?

  • Thomas

    the video doesn’t work… :( PLayback error

  • Unknow

    That is strange. I am unable to watch the videos. Even the player does not appear. Is this only for members?