20 Things to Learn and Effective tips to becoming JavaScript Master

20 Things to Learn and Effective tips to becoming JavaScript Master

Do you want to get into web development? Or perhaps you’re fascinated with code and software? If so then JavaScript is a good choice for you. In this post, we will for you 20 things to learn and Simple Effective tips on the way to becoming a JavaScript Master

10 THINGS TO LEARN

I guess you are a web developer. Hopefully you are doing fine and you have a great job, maybe you are even self-employed or working as a freelancer. Maybe you are just starting out as a web developer, maybe you have been working as a programmer for a longer period already.

However comfortable you are with JavaScript, it is always good to get a refresher on some topics to read up about or get them on the radar in the first place. Here are 10 things you definitely have to learn before you can call yourself a master in JavaScript.

1. Control Flow

Probably the most basic topic on the list. One of the most important, maybe the most important one. If you do not know how to proceed with your code, you will have a hard time. Knowing the ins and outs of basic control flow is definitely a must.

  • if else — If you don’t know these, how did you write code before?
  • switch — is basically if else in a more eloquent way, use it as soon as you have multiple of different cases.
  • for — Do not repeat yourself, this is what loops are for. Besides the normalfor -loop for of and for in come in very handy. The big advantage of for -loops is that they are blocking, so you can use async await in them.
  • Advanced conditionals — Using the ternary and logical operators can make your life a lot easier, especially when you try to do things inline, meaning that you don’t want to save values to use them later. Example:
// ternary
console.log(new Date().getHours() < 12 ? 'Good Morning!' : 'Time for a siesta')
// logical operators
const isJsMaster = prompt('Are you a JavaScript master?') === 'true'
console.log(isJsMaster && 'proficient coder')

2. Frontend Framework

The big three are React.js, Angular and Vue.js. If you are looking for a job nowadays, you will almost always have one of those listed as a prerequisite. Even if they change quite quickly, it is important to grasp the general concept of those to understand how applications work. Also, it is just easier to write apps that way. If you haven’t decided which train you want to jump on, my suggestions is React.js. I have been working with it for the last couple of years and did not regret my decision.

3. Asynchronity

This is a very important aspect of JavaScript, Either you are fetching data from the backend or you are processing requests asynchronously in the backend itself. In pretty much all usecases, you will encounter asynchronity and its caveats. If you have no idea what that is, you will probably get a weird error, which you will try to fix for a couple of hours. If you know what it is, but you don’t really know what to do about it, you will end up in callback-hell. The better approach is to use promises and/or async await in your apps.

4. Node.js / Express

Even as a frontend developer, you should know the basics of node.js. Ideally, you would also know how to spin up a simple express server and add some routes or change existing ones. JavaScript is great for writing scripts to help you automate a lot of tasks. Therefore, knowing how to read files, work with filepaths or buffers gives you a good toolset to build anything.

You may also like: Best Design Patterns for writing JavaScript Web applications

5. Error handling

This took a while for me. It does not matter if you are working on frontend or backend, the first year or so, you will probably default to console.log or maybe console.error for ‘handling’ errors. To write good applications, you definitely have to change that and replace your lazy logs with nicely handled errors. You may want to check out how to build your own Error constructor and how to catch them correctly, as well as showing the user what the actual problem is.

6. Data Models

Similar to moving through your application continuously, you have to decide where to group specific information chunks and where to keep them separate. This does not only apply to building database models, but also function parameters and objects or variables. Example:

const calcShape = (width, height, depth, color, angle) => {...}
const calcShape = ({width, height, depth, color, angle}) => {...}

7. DOM Manipulation

This is an interesting topic. Normally it is somewhat left out in the day today life as a developer. Maybe you learned jQuery and never felt the need to pick up some native DOM manipulation skills, maybe you are just using a frontend framework, where there is rarely a need for custom DOM manipulation. However, I think this is a crucial part of understanding JavaScript, at least in the frontend. Knowing how the DOM works and how to access elements gives you a deep understanding of how websites work. In addition, there will be the point where you have to do some custom DOM manipulation, even when you use modern frontend frameworks, and you definitely do not want to put jQuery in your package.json just to access an element.

8. Functional Approach

There is an everlasting debate about functional vs. object-oriented programming. You probably can achieve the same thing with both of the approaches. In JavaScript, it is even easier, you have both of the approaches available. Libraries like lodash give you a really nice collection of tools for building applications with a functional approach. Nowadays, it is not even necessary to use external libraries any more. A lot of the most important functions have been implemented in the official JavaScript specification. You definitely should know how to use map reduce filter forEach and find.

9. Object Oriented Approach

Similar to the functional approach, you also have to get familiar with object oriented JavaScript, if you want to master it. I neglected that part for a long time in my career and just worked my way through with a workaround, but sometimes it is definitely better to use objects/classes and instances to implement specific functionality. Classes are widely used in React, MobX or custom constructors.

10. Bundling / Transpilation

Unfortunately, this is a big part of web development. On the one hand I should not say unfortunate, because it is great to be able to write code with all the newest features. On the other hand, the reason why I’m saying that is that we always have to keep in mind that there’s older browsers around that may not support these features, therefore we have to transpile our code into something else that the old browsers understand. If you work with node.js, you will probably have less exposure to transpiling your code. The de-facto standard for transpilation is babel.js, so get familiar with it. As for bundling your code and tying everything together, you have a couple of options. Webpack was the dominant player for a long time. Some time ago, parcel popped up out of nowhere and is now my preferred solution, since it is so performant and easy to configure, although not perfect.

This is not specific to JavaScript, but incredibly helpful in a lot of use cases. Just as confusing as well. Getting to know the syntax of Regular Expressions definitely takes some time and remembering all of the different options is impossible.

10 SIMPLE and EFECTIVE TIPS

Do you want to get into web development? Or perhaps you’re fascinated with code and software? If so then JavaScript is a good choice for you.

Why JavaScript?

Javascript is the scripting language of the internet and one of the most essential web technologies along with HTML and CSS. It’s a high-level, interpreted programming language that conforms to the ECMAScript specification. In more simplistic terms, it’s what allows you to implement and display complex things on your webpage, to create content, to animate images and tons of other amazing possibilities with just a few lines of code.

There’re plenty of reasons to learn this wonderful programming language. The most important one is the fact that JavaScript runs everything and everywhere. Most of the prominent websites are built on the backbone of JavaScript while currently there are more than 3 billion devices be it Smartphones or desktops. JavaScript went through a massive surge of popularity and quickly become the most dominant language in the world of software. In light of this, it’s obvious that Javascript skills are in high demand by companies everywhere. For all these reasons and more, it’s lucrative to have JavaScript skills on your resume.

Why is it challenging?

Learning JavaScript is easier said than done. Newcomers often run into similar kinds of problems such as difficulties in understanding confusing concepts. Not only that, but JavaScript also has an ever-changing tooling landscape one that makes it even far more grueling to understand. It’s hard to find the motivation to complete a demanding task such as this. JavaScript is also a vigorously un-typed language which means that the same thing in one code can easily mean something different depending on the context and medium. It also is extremely hard to debug due to a non-existent support system for different classes.

Tips for JavaScript Beginner

So the question is how to learn JavaScript? Similar to every complicated thing in life, you can learn JavaScript coding through constant practice and by never giving up. To help you in this task, we have written down the best way of learning this skill just for you! Try to follow these tips to enhance your learning experience.

1. Keep experimenting & Interact with veterans

Find and make your own way to solve problems related to JavaScript. Keep experimenting with the problems and what you have learned so far. Also, do interact with the veterans as the large community lead to more support and help you’ll be able to receive. Fortunately, JavaScript has one of the largest internet communities that is all about giving and receiving help and exploring the world of JavaScript. Take advantage of that! Meet up with the experts to not only motivate yourself to study but to learn as well. You might even be offered a mentorship! By being a part of a community, you’ll also be able to keep up to date with new, innovative tools!

2. Do not rush! Go step by step

I know it’s tempting to move on immediately once you understand a concept, but don’t! Instead, play with what you have learned, get comfortable and even combine it with the previous lessons. Start from beginner’s level and cover all the topics from tutorials, check resources, implement what you have learned and when you are finally confident of your beginner level skills, then move on to the intermediate level and after that, to advance level. By limiting the learning content and keeping in touch with the previous lessons, you’ll be able to retain the material in your head and find it easier to remember key concepts. The process seems long for sure but it actually takes far less time since you don’t have to keep revising and is actually quite fun. There’s really nothing that you cannot do with JavaScript in regards to web development.

3. Look out for JavaScript Resources

The internet has millions of sources available for you to use. Take “JavaScript: The Definitive Guide” by David Flanagan. It’s a book that has been forever considered a bible for JavaScript programmers across the world. In it is a comprehensive guide that is well-organized and detailed for new programmers to learn and old programmers to revise. Another book that you can read is “You Don’t Know JS: Up and Going” by Kyle Simpson which provides the necessary background for those with limited knowledge about programming. The entire series introduces more complex and harder parts of the JavaScript language as you read on one book at a time. Furthermore, there are tons of articles, blog posts and even YouTube videos available for reference. Don’t waste these valuable resources!

You may also like: Keeping your JavaScript code clean forever and scalable

4. Right attitude

The first thing you need to do is to go with the right attitude to learn JavaScript. Learning JavaScript is going to become needlessly more bothersome if you approach it with the wrong mindset. Trying to learn it with an “I need to get this over” mindset is not going to take you anywhere. It’s a huge struggle to face and you truly have to be passionate about code to learn it. Not only that, you need to remind yourself to have fun with what you’re learning as JavaScript code is capable of astonishing things once you get the hang of it.

5. Start Slowly

A mistake many beginners make is that they directly start working on frameworks such as jQuery, AngularJS, Backbone, etc. You should never do it. Instead, you should start working on DataTypes and in-built methods. After getting enough of the fundamentals, you can try NodeJS. Trust me, NodeJS is very simple, just a JavaScript code backed up with inbuilt libraries. Then, you can try frameworks.

6. Find the perfect editor for JavaScript

You can’t code without a text editor. Fortunately, you have tons of options to choose from. To write JavaScript code, you can either use your Windows notepad or even download programs such as Notepad++ or Visual Studio Code. Either way, after going through all possible editors, choose the one that you’re most comfortable to work on as this is where you’ll be spending most of your time. Also when you’re starting out, it’s essential to choose an editor that has a simplistic interface and will support you as a beginner.

7. JavaScript Tutorials!

If you search the web for JavaScript tutorials, there are a vast number of tutorials available online on sites such as CodeAcademy, FreeCodeCamp, etc. If you’re a beginner then you should start from beginner level JavaScript tutorials and then move on to intermediate and advanced level. Tutorials are like doing grammar exercises and the sites with JavaScript tutorials are ideal for learning the basics and getting used to the syntax. Learning JavaScript is no different than learning French or Spanish. It takes time.

8. Start Ajax and Async after getting a hang of the basics

After you have spent quite a lot of time on JavaScript, start working on Ajax and Async concepts. Learn how to use different functions on JavaScript and use classes as well. All of these things take quite a lot of time to master but trust me; all your hard work will surely be rewarded.

9. Challenge yourself! Explore JavaScript and learn

When it comes to learning JavaScript, there is always something you can learn as it is a never-ending process. A lot of people end up never improving their JavaScript coding by spending too much time only doing what they are confident about. Make sure that you’re not one of them. Every time you finish a lesson, ask yourself if you have learned something you didn’t know before. That is the key to success. Be mindful of what you want to learn or improve your knowledge of. Make sure that you’re challenging yourself and growing as a developer instead of conforming to a single comfort zone.

10. Keep yourself up to date and be prepared

JavaScript isn’t an easy skill to learn. If it was, it wouldn’t be held with the same reverence as it is in the labor market now. You need to understand the fact that learning JavaScript would require a huge amount of time and dedication. It’s not going to be an easy road. Not only is JavaScript already a complex and intricate skill to master, but it is also a growing field which would require you to stay updated with the new web development practices. Prepare yourself that it’s going to consume a majority of your time. Be patient too. You’re not going to learn JavaScript in a month and maybe not even in a year. All the time spent is going to be grilling, demanding but remember that it will also be completely worth the trouble.

BONUS

Learning JavaScript is constant work and quite difficult but with the right attitude and determination, learning it can be an extremely satisfying experience. All you need is passion and a hunger to learn. Hopefully, with the above-mentioned tips, as well as the other brilliant and detailed materials available online, you’ll be able to grasp JavaScript as quickly as possible while also having a great enjoyable ride.

Hopefully you know all of the topics listed above already. If not, put in the work and try to become a master in JavaScript! It is definitely worth it. Remember that practicing is everything when it comes to coding, so even if you are not familiar with these concepts or know them but you don’t really know how to apply them, it will come in the future.

What do you think about the list? Is something missing? Do you think other topics are more important when coding? Let me know in the comments!

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Is Low-code or no-code development is future of mobile app development

Is Low-code or no-code development is future of mobile app development

Mobile app development has skyrocketed over these years with the increasing demand of mobile apps for a variety of purposes like entertainment, banking, weather update, health, booking movie tickets, booking a taxi etc. With the latest...

Mobile app development has skyrocketed over these years with the increasing demand of mobile apps for a variety of purposes like entertainment, banking, weather update, health, booking movie tickets, booking a taxi etc. With the latest technologies adopted by mobile app development services, there are different app development approaches which are being practiced. Among them is low-code or no-code development. But will it be the future of mobile app development? Will any mobile application development company start taking this approach as the primary one. Let’s try to find a detailed answer to this question.

But first, let’s understand what this approach exactly is? Well, it is a streamlined approach which involves swift design as well as development with minimal coding, generally relying on different third-party APIs.

Even though there isn’t any single definition of no-code or low-code development because it is actually more of a mindset rather than something which can be directly measured, this mindset has certainly led to a vast community mushrooming up with this mentality. Android app development services are rapidly adopted by this approach. Low-code app innovators are rapidly disrupting all types of various industries. There are a plethora of benefits to these low code platforms and let’s look at this.

1. Less Number of Bugs

It is pretty evident that less code actually means fewer bugs. As simple as that. The entire bug testing phase is actually a major part of modern and latest application development. It is quite inevitable that various issues will come up if there is actually enough code present there. But the best thing regarding low code platforms is that there’s certainly less to test. Also, when they actually tap into APIs, those particular APIs are actually tested by other people.

Lesser number of bugs is better for both users, as well as developers since less amount of time, will be taken up with bug-fixes and troubleshooting. Also, the fast pace of this development approach actually means that if in any case a bug is found, it is generally better just to develop a new iteration rather than fixing it.

2. Significant Lower Costs

Among the most obvious reasons for why you would actually opt for any low code platform is that in reality, low code results in lower cost. Low code development leads to faster app development which saves a lot of time and as a result, lower cost.

It's not only good for companies but also for developers. It certainly cut out the intermediaries, and while they charge less, they use fewer resources and finally come out on top. It is fun for developers because it stops them from actually finding themselves stuck on one particular project which seems to last forever. This is why most of the companies hire app developer who is a well-versed with low-code development.

3. Better Accessibility

The lesser amount of code an application uses, the lesser bandwidth is needed to download it as well as run it. This is quite good news for the people who are based in rural areas or in different developing countries where access to the internet isn’t as prevalent as Western countries. Also, as low code applications can easily be created quite easily than a traditional app, they can easily be released much more swiftly and at a much lower price, and sometimes for free. iPhone app development services follow this approach because it will help in increasing the uptake of their apps as it reduces the entry barrier for every person from lower-income families.

Innovative Development Approach

Among the most promising instances of a low-code or no-code platform is Uber. The apps tap into Google for Maps, Dropbox for storage, Braintree for payments and much more. The most interesting thing about this is that app programming interfaces of APIs which Uber actually relies upon are easily available to anyone who wishes to use them. Uber took those APIs and then used them to create, which was new without requiring to develop each of those particular individual elements, all by themselves. They developed their own brand on top of it by means of looking at how they could actually differentiate themselves from the rest of the others. Mobile app development services should follow this example to create their own low code mobile app which disrupts the market.

The best thing about this is that it inspires innovation. At present, the marketplace actually decides, and only the best applications rise to the top. Also, low code development easily allows developers to iterate much more quickly and can aim for higher more.

The Role of Artificial Intelligence (AI)

Artificial Intelligence is certainly making big waves in different businesses, and as this technology improves further, it will find its way in different other uncharted areas. Among those areas is the low code app development, where it comes in quite useful for a wide range of tasks and actions including the integration of various data sources or just making sense of an entire unstructured or semi-structured data.

Artificial Intelligence is quite great at analysing and conducting trial and error. Hence, it won’t be quite long until the usage of AI becomes quite a standard part of the low code app development. A mobile application development company can find ways to reduce the total amount of code that it is using through AI and flagging potential and possible improvements.

Conclusion

It is quite certain that low-code or no-code app development is the future of app development for one of the simplest reasons that it is quite easier as well as faster and efficiently uses time. It actually doesn’t matter whether Android app development services or iPhone app development services are on-board with this particular change or not. This is quite inevitable as this approach is the path of least resistance. Also, as the inherent demand for low code platforms keeps in growing, developers will certainly find themselves to adopt it.

It is quite a great news as it will push the developers of mobile application development services to become the best. Also, there won’t be any time to redoing it to create the same thing, or any room for sloppy code as well as lengthy development processes which makes the mobile apps redundant even before they are actually finished. Hence, low-code or no-code development will certainly lead the future of mobile app development, and mobile app developers certainly have to get on the bandwagon, one way or the other.

Learn Python Programming

Learn Python Programming

Learn Python Programming

Description
Learn Python Programming

Learn Python Programming and increase your python programming skills with Coder Kovid.

Python is the highest growing programming language in this era. You can use Python to do everything like, web development, software development, cognitive development, machine learning, artificial intelligence, etc. You should learn python programming and increase your skills of programming.

In this course of learn python programming you don't need any prior programming knowledge. Every beginner can start with.

Basic knowledge
No prior knowledge needed to learn this course
What will you learn
Write Basic Syntax of Python Programming
Create Basic Real World Application
Program in a fluent manner
Get Familiar in Programming Environment

Block any Event of Browser using Javascript codes

Block any Event of Browser using Javascript codes

In this article, we will go through possible ways to block any event using Javascript codes

In most browsers there are three possible kinds of events triggered when a keyboard key is pressed or released,

  1. keydown
  2. keypress
  3. keyup

You can check which key was pressed or released whenever KeyboardEvent is triggered because that event contains information and based on that event information you can write you custom logic to handle that event.

Note

The implementation will fail if the user disables JavaScript.

Base Code to trace any javascript event,

document.addEventListener("keydown", function(event)  
{  
   console.log(event.which);  
   console.log(event.keyCode);  
   console.log(event.shiftKey);  
   console.log(event.altKey);  
   console.log(event.ctrlKey);  
   console.log(event.metaKey);  
}   

List of Avaibale Javascript Code

We can use the below code to prevent opening of context menu, copy cut paste, or view source code on any page.

Many times we want to disable some existing functionality on a webpage for any security reason.

Eg: prevent images from being downloaded, copy the content, etc...,

Disable context menu on right click,

$("body").on("contextmenu", function (e)
   {
      return false;
   });
});

Or,

document.oncontextmenu = function() {
   return false;
}

Disable right click menu on particular section on page,

$(document).ready(function(){
   $("#youDivSectionId").bind("contextmenu", function(e) {
      return false;
   });
});

Disable Cut, copy, paste,

$(document).ready(function(){
   $('body').bind('cut copy paste', function (e)
   {
      e.preventDefault();
   });
});

Let's Block the same cut, copy, paste events with javascript codes,

$(document).ready(function(){
$(document).keydown(function(event) {
   //event.ctrlKey = check ctrl key is press or not
   //event.which = check for F7
   // event.which =check for v key
   if (event.ctrlKey==true && (event.which == '118' || event.which == '86')) {
      event.preventDefault();
      }
   });
});

Prevent browser Debugger console example,

$(document).keydown(function (event) {
// Prevent F12 -
if (event.keyCode == 123) {
   return false;
}
// Prevent Ctrl+a = disable select all
// Prevent Ctrl+u = disable view page source
// Prevent Ctrl+s = disable save
if (event.ctrlKey && (event.keyCode === 85 || event.keyCode === 83 || event.keyCode ===65 )) {
   return false;
}
// Prevent Ctrl+Shift+I = disabled debugger console using keys open
else if (event.ctrlKey && event.shiftKey && event.keyCode === 73)
{
   return false;
}
});

Thank you for reading ! I hope this tutorial will surely help and you if you liked this tutorial, please consider sharing it with others.