Checking for the Existence of JavaScript Variables

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  • Опубліковано 19 гру 2024

КОМЕНТАРІ • 30

  • @cholo2605
    @cholo2605 9 місяців тому +1

    We miss you prof3!!

  • @St1diot
    @St1diot 8 місяців тому +1

    I love you proffesor steve ❤❤

  • @shahinza
    @shahinza Рік тому +1

    Hello Professor! I've truly missed your insightful videos. Your content has always been my go-to for simplifying complex topics. Hoping everything is going well for you. Looking forward to new uploads!

  • @anthonydsouza8202
    @anthonydsouza8202 Рік тому

    Hi professor. Great to know that you are writing a book. Surely, it's gonna be as awesome as your videos. Wishing you all the best.

  • @chiggywiggy524
    @chiggywiggy524 7 місяців тому

    You're the Bob Ross of programming ❤

  • @Felipekimst
    @Felipekimst Рік тому +3

    Man, that wind out there got me scared lol

  • @NurioonSoftware
    @NurioonSoftware Рік тому

    Professor. Your channel is Diamond 💎

  • @leonardchan2638
    @leonardchan2638 Рік тому +1

    There's an edge case where, you just declare a variable (but don't assign a value to it) let varname; and typeof varname is actually 'undefined'. So you can't re-declare it. Not practically useful though...

  • @Strasbourgeois
    @Strasbourgeois Рік тому

    A script of type module creates it's own scope preventing var declarations from bubbling up to the global scope

  • @grenzhochspannungshindernis

    Can you recommend any how-to-program books?

    • @SteveGriffith-Prof3ssorSt3v3
      @SteveGriffith-Prof3ssorSt3v3  Рік тому +1

      There are thousands.
      It depends on what specifically you are trying to learn. What language? What framework? What technology?
      I recommend going to a book store and spend a couple hours flipping through books on the topic you want to learn. Pick a book whose author writes in a way that you understand. It doesn't matter what book or what you are learning. As long as you are learning, you are making progress. Programming is a life-long learning process. Just start.

  • @rationalindianguy
    @rationalindianguy 8 місяців тому

    Hello sir.
    You are doing amazing... please upload React

  • @mayankshashi5557
    @mayankshashi5557 Рік тому

    Hi sir, can you please make a video on how we can display image on webpage when we upload image data into indexdb in offline mode?

    • @SteveGriffith-Prof3ssorSt3v3
      @SteveGriffith-Prof3ssorSt3v3  Рік тому

      This video explains how to work with files and data to display things on a webpage - ua-cam.com/video/zq2xD-xuIG4/v-deo.html
      I do plan to make a video on how to save files with IndexedDB... not sure when but it is on my list.

  • @RedaElMekkaoui-p9k
    @RedaElMekkaoui-p9k 7 місяців тому

    Hey steve, I'm 15 year old and I only just started learning programming, I want to make it a career out of it, is starting at 15 ideal and how many years will it take me on average to achieve an intermediate or advanced level??

    • @SteveGriffith-Prof3ssorSt3v3
      @SteveGriffith-Prof3ssorSt3v3  7 місяців тому +1

      In my program, I've taught 17 year olds and 60 year olds. Both of whom did great. The best time to start learning how to program is today.
      The time required to get to an intermediate level depends on the person and how much time is spent learning and practicing through building things. Could be a year, or could be five years. You also have to consider intermediate in which area. There are lots of areas to learn about in programming. You can be a beginner in a dozen and intermediate in a couple, and advanced in a couple others.

  • @Fam-m4i
    @Fam-m4i Рік тому +1

    Hi Steve, great content. I was wondering if you could make a video on Promise polyfill using es6 classes. It's commonly asked in interviews

    • @SteveGriffith-Prof3ssorSt3v3
      @SteveGriffith-Prof3ssorSt3v3  Рік тому +2

      I have not heard of that being asked in many years. Node and all browsers all support Promises and have for years.

  • @nro337
    @nro337 Рік тому

    Great video!

  • @shahinza
    @shahinza Рік тому

    Thank you 🙏

  • @RalphGoddard-tt1xq
    @RalphGoddard-tt1xq Рік тому

    If your not already, you might want to use a noise cancelling mike

    • @SteveGriffith-Prof3ssorSt3v3
      @SteveGriffith-Prof3ssorSt3v3  Рік тому +1

      I do but there was a Tornado approaching while I was recording. Seriously.

    • @bmehder
      @bmehder Рік тому

      @@SteveGriffith-Prof3ssorSt3v3 I was going to ask if you were recording the video during a tornado as a joke. Glad you made it through unharmed.