It is strongly advised to look at some of your old codes after completing the project. This way you can find ways to refactor and improve readability. For example, you can do this by wrapping repetitive code in subroutines, writing custom React hooks, etc.
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Concept learning is crucial in relation to learning frameworks because concepts will remain forever. When you’re just starting out, it can be difficult to understand the concepts behind the code. For example, why is he behaving this way, and why is he doing it? But, eventually, with experience, you will begin to understand them.
Most beginners start coding but don’t understand it well. It might help you get started, but it won’t help you in the long run. Programmers should challenge themselves and know what they are doing and why they are doing it as they gain experience rather than just following the syntax.
Many developers use babel js, frameworks and SSR without understanding how it works. Sometimes they tend to use it even though it is not relevant in their context.
For example, some people use arrow functions simply because they are shorter. But, that’s not what it was made for in the first place. You can use arrows to solve context problems with functions. But most developers use arrow functions because it’s easier. However, you will only end up with errors if you have not used the correct tools.
Another well-known example is the use of async/await. Although async/await are convenient to use, you can’t use them in all situations. But many developers use async/wait everywhere and end up creating try/catch hell.
Is the way to go. In short, you need to understand the context and know what to use and when.
Asking the questions above will lead you to choose the right tool. A project that does not need maintenance will not need the same architecture as an application that will last 2 or 3 years.
You won’t need React or any other framework all the time. When you start installing the CLI framework to make a modal or AJAX call, ask yourself a few questions. Sometimes all you need is an .html file and a script tag. It is therefore a question of knowing the context.
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The title says it all, but it’s time someone said it out loud. Programmers should think before writing unique code. Think and write a Unified Modeling Language (UML) or whatever will help you design more before you start coding.
You don’t have to do anything because it’s trendy or what other people are doing. TypeScript is good, but you don’t need to use it everywhere. Use TS only when necessary. Many developers use TS primarily because everyone around them does. But that’s unwanted hype.
Also use ES6+ and babel js only if it’s relevant to your project and not because it’s convenient. The same rule also applies to frameworks and libraries. Use it if it suits your project.
Always focus on simplifying your code. In general, more lines of code require more errors and it will take you longer to fix them. A few lines of efficient code can perform the same function, probably even better than many lines of complex code.
Always think twice before acting. Also, when you go through concepts, you can quickly adapt to any new framework or library. Yes, developers can easily update with new tools or technologies; if they know the concept behind their code.
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Ideally, you should be thorough with your basics. The rest will form. More than trendsetters and other developers, trust your intuition and question your code. Find out the reasons and try to simplify and improvise your code.
The section below introduces some basic language aspects and also offers a chance to play around with some browser API functions. Enjoy!
Disclaimer: If you haven’t taken the rest of our course, download this sample code and use it as a starting point.
Note: The reason the instructions (above) place the element near the bottom of the HTML file is that the browser reads the code in the order it appears in the file.
. This is similar to what we did with CSS selectors. When you want to do something to an element, you must first select it.
Note: The two functions you used in this exercise are part of the Document Object Model (DOM) API, which has the ability to manipulate documents.
Variables are containers that store values. You start by declaring a variable with the let keyword, followed by the name you give the variable:
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You can name a variable almost anything, but there are some limitations. (See this section on naming rules.) If you’re not sure, you can check your variable name to see if it’s valid.
It is a sequence of text known as a string. To indicate that the value is a string, enclose it in single quotes.
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