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Popular JavaScript Interview Questions with Answers.

JavaScript is most popular language with ample of job opportunities. Here is the list of 20 most asked #javascript interview questions to speed up your preparation.

🧵A Thread 🧵

#100DaysOfCode #Developer
1. What's the difference between undefined and null?

"undefined" is the default value of a variable that has not been assigned a specific value and "null" is a value that represents no value.

#100DaysOfCode #javascript #Developer
2. What does the && operator do?

The && or Logical AND operator finds the first falsy expression in its operands and returns it and if it does not find any falsy expression it returns the last expression.

#100DaysOfCode #javascript #Developer
Read 23 tweets
Last Saturday, @souvikdg and @hallidude chatted about the pros and cons of @CraftCMS on hasgeek.com/metarefresh/co…. If you are deciding on whether to adopt #CraftCMS, you will find this thread useful. (1/13)
@souvikdg @hallidude @CraftCMS .@CraftCMS is a general purpose Content Management System (CMS) which differentiates itself from other #alternatives by offering a clean starting point coupled with great tools to build a #website. (2/13)
@souvikdg @hallidude @CraftCMS .@CraftCMS features a clear separation of concern between the content models, presentation and business logic. Since you begin with a clean slate, you have to bring your own #HTML and #design. There is no starter theme.
Read 14 tweets
Stackoverflow Developer Survey 2020 results are out :  insights.stackoverflow.com/survey/2020#mo… 

Picture for #Ruby doesn't look good. For me, it has several signs of becoming exotic / niche (like COBOL) than being widespread (like Java). This has huge impact on hiring and talent pool (1/n)
1. % of survey respondents working on Ruby is : 7.1 Decreasing over the years :
2020 - 7.1 (Rank 14)
2019 - 8.4 (Rank 12)
2018 - 10.1 (Rank 13)
2017 - 9.1 (Rank 10)
2016 - 8.9 (Rank 11)
This by itself is not significant, but when read with other metrics it is meaningful (2/n)
2. #rubyonrails is also facing a similar decline in popularity. This year it was at 7.0%
This, of course, could be the bias associated with the developers surveyed. It still, however, shows where the #developer #community is concentrating. More on importance of this below. (3/n)
Read 13 tweets
My React Native Journey:
A while ago, I fell madly in love with #React. And recently delved into #ReactNative. My React Native journey hasn't been as smooth though. Due to the frequent updates of the react-native framework, existing tutorials quickly become outdated.
In this thread, I have curated some of the most relevant materials I have found, which have brought the much-needed balance to my learning journey. They are listed below:
1. The React Native Documentation: irrespective of what other material you chose. This always comes in handy for quick reference. And it's always up to date.

reactnative.dev
Read 16 tweets
1/x In an effort to understand the #OilPriceWar I dug a bit. Here is what I found & another resource thread for any students that are not in school & would like to learn a bit on #markets. #ResourceThread

A. It. began with the #Corvid19 = ⬇️ demand.
nytimes.com/2020/03/02/bus…
2/x The #Corvid19 -> ⬇️ Dem. to level this ⬇️prod.

B. V. much like the rhyme there was an old woman who swallowed a fly, shell, and a host of other holiday spin offs, the⬇️ demand, would have resulted in a price crash. See #oilprice metrics.
investopedia.com/articles/inves…
3/x #Oilprice is complex, here is a site that show some price charts that may be of interest. Here you can create your own dashboard.

eia.gov/beta/states/da…
Read 15 tweets
The secret source for delivering value in form of software at (enterprise) scale? Option 1: the Thanos Method (get rid of most people) - Not recommended but effective for sure.
Option 2: create and maintain an immune system made of strong engineering culture (includes #ethics!!) AND platform thinking (for synergy effects & North Star). This is the option I do consulting at: Strategic Software Delivery. #devrel #dev #experience #SoftwareEngineering
The immune system is a passive force to allow customer centric thinking, allow experiments on all levels. It frees up busy minds and let’s you focus on delivering value to customers. Because it is a passive system, it is easy to overlook, but it makes all the difference.
Read 7 tweets
Yine raporlar okundu, makaleler sular seller 🤦‍♀️ #Teknoloji konusunda önümüzdeki dönemde en fazla #yatırım hangi alanlara yapılacak? 2020 yılında yine burada hangi konuları konuşuyor olacağız? Yuvarlak cevapları bir kenera bırakalım ve nokta atışı gidelim hadi 🔥 #tech #trends
1/ Yapay zeka ve kişiselleştirilen süreçler @Adobe 2019 Trendler Anketi'nde yine ilk sıraya yerleşti 🧠 Markaların yönlendirmeleri ile kullanıcı deneyimini geliştirmenin en sağlıklı yönteminin #AI tabanlı veri yönetimi olarak değerlendirildiğini görüyoruz! adobe.ly/2JLVvpN
2/ @IDC (Uluslarası Veri Kurumu) raporuna göre şirketler henüz sonuç alamadıkları #blockchain'e milyonlar harcamaya devam etmeye istekli 💸 2019 yılında $2.9M'u bulması beklenen harcama 2022'ye geldiğimizde $11.7M'u bulacak 🙆‍♀️ #cryptocurrency #technology idc.com/getdoc.jsp?con…
Read 10 tweets
Bir yazılım geliştiricinin bilmesi gerekenlerle ilgili 15 maddelik flood geliyor.. Mümkün olduğunca fazla keywordü bir araya toplamaya çalıştım.
Hadi Başlıyoruz!

#Developer #Software #Java #code #kod #yazılım #development #computer #bilgisayar #tool #PC #IT #web #tech #data
1-Temel veri yapıları (linkedList, map, tree vb) ve temel algoritmalar (sıralama, arama vb)

Sıfırdan kodlama ihtiyacınız büyük ihtimalle hiç olmayacak. Ancak ihtiyaç anında doğru yerde doğrusunu seçebilmek için o veri yapısının veya algoritmanın nasıl çalıştığını bilmeniz şart
2- Network Temelleri

OSI Modelini ve 7 katmanı; temel protokolleri(#TCP-IP, TCP-UDP, #HTTP, #FTP), güvenlik protokollerini(#HTTPS, #SFTP, #SSL), monitoring protokolleri(#SNMP, ICMP) bilmekte fayda var. Ayrıca ağ ekipmanlarının görevlerini tanımak ve 7Layer yerlerini bilmek lazım
Read 16 tweets
It's time for my 2018 #design recap! Less writing, more @ideaplatz speaking and podcasts, and a job transition to boot. I expanded my public talks to include not just VUI but conversational UI, artificial intelligence, and improv for creativity. Here's my year... 1/
My first 2018 post was aimed at #VUI #design job seekers. Rather than reply to a series of 1:1 inquiries, I look for patterns to inspire published pieces. A VERY common question: "Any tips for my Amazon/Google/etc voice design interview?" #voiceFirst medium.com/@muppetaphrodi… 2/
In February 2018, I had the honor (+challenge!) of following @MrAlanCooper on the #Ixd18 mainstage. In my early days on the #EchoLook, I daydreamed about speaking to @ixdconf attendees about that product #design process. A literal #ux dream come true. 3/ vimeo.com/254533851
Read 26 tweets
#CodeDocumentation
Writing a documentation for code is harder than writing the code.

Documentation > Code.
#Code #Documentation

Without the completion of documentation, code for the functionality is still in pending state.
#Documentation

Documentation fulfills the code.

#DocumentationSayings
Read 10 tweets
Today I'm going to #rant about #haskell libraries. I'm a Haskell supporter, I think it's a great language, but that doesn't mean it doesn't have problems. Some of them are surprising and I want to talk about them.
At the end of the rant I will have tips for developers using Haskell and for libraries developers (in any language, some rules are universal) so bear with me. It's a long rant but there is a good ending ;).
A preamble first: one of the reasons why I decided to study haskell is because haskell had a good way to deal with errors and invalid inputs/states.
Read 17 tweets

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