Javascript Basic and Brief:
Definition and Brief description:When JavaScript was created, it had another name initially: "LiveScript". But Java was very popular at the time, so it was decided that keeping the new language as Java's "younger brother" would help. But as it evolved, JavaScript became a completely independent language with its own specification called ECMAScript, and it no longer belongs to Java.
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| Javascript also a tool for web development code javascript is basically language in HTML, CSS and javascript code in HTML language. |
language. Anyone can tune in to this definition, but they are the most
Let's look at them in detail in important aspects of the language.
First, JavaScript is an object-oriented programming language, such as a
Method one. There are several implications of this difference. First and foremost, almost all of them work with you
For example, here is a string in JavaScript in which a string is referenced
Characters:
var name = 'knowledgehu92.info"';
Today, Javascript can be implemented not only in the browser, but also on the server, or in fact on a device called a special program.
Code editors
Code Editor is where programmers spend most of their time alone.
IDE
The term IDE (Integrated Development Environment) is a powerful editor with many features that usually work on "the whole project". As the name suggests, it is not just an editor, but a "development environment" as a whole.
An IDE project (which can contain many files) is packed, allows navigation between files, provides autonomy based on the entire project (not just the open file), and version management systems (such as Git). , A testing environment, and other "project level" things.
If you have not yet selected the IDE, consider the following options:
Visual Studio Code (cross-platform, free)
Web Storm (Cross-Platform, Paid)
For Windows, there is also "Visual Studio", which does not get confused with "Visual Studio Code". "Visual Studio" is a paid and powerful Windows sole editor, suitable for the .NET platform. It's also good at JavaScript. There is also a free version of the Visual Studio community.
Many IDEs are paid, but there is a trial period. It's usually not worth the cost of a competent developer's salary, so just choose the best one for you.
They are mainly used to open and edit a file immediately.
The main difference between a "lightweight editor" and an "IDE" is that the IDE works on a project level, so it loads a lot of data at startup, analyzes project structures, etc. if needed. The lightweight editor is super fast if we only need one file.
In practice, lightweight editors can have many plugins, including directory level syntax analysts and autocompletion, so there is no tight border between lightweight editors and IDEs.
IDE
The term IDE (Integrated Development Environment) is a powerful editor with many features that usually work on "the whole project". As the name suggests, it is not just an editor, but a "development environment" as a whole.
An IDE project (which can contain many files) is packed, allows navigation between files, provides autonomy based on the entire project (not just the open file), and version management systems (such as Git). , A testing environment, and other "project level" things.
If you have not yet selected the IDE, consider the following options:
Visual Studio Code (cross-platform, free)
Web Storm (Cross-Platform, Paid)
For Windows, there is also "Visual Studio", which does not get confused with "Visual Studio Code". "Visual Studio" is a paid and powerful Windows sole editor, suitable for the .NET platform. It's also good at JavaScript. There is also a free version of the Visual Studio community.
Many IDEs are paid, but there is a trial period. It's usually not worth the cost of a competent developer's salary, so just choose the best one for you.
Lightweight editors:
"Lightweight editors" aren't as powerful as IDEs, but they're fast, beautiful, and easy.They are mainly used to open and edit a file immediately.
The main difference between a "lightweight editor" and an "IDE" is that the IDE works on a project level, so it loads a lot of data at startup, analyzes project structures, etc. if needed. The lightweight editor is super fast if we only need one file.
In practice, lightweight editors can have many plugins, including directory level syntax analysts and autocompletion, so there is no tight border between lightweight editors and IDEs.
The engines are complex. But the basics are simple.
- The engine (if it's a browser embedded) reads the script ("parse").
- Then converts the script ("compile") into machine language.
- And then the machine code runs, very fast.
- The engine applies optimization at every stage of the process. It even looks at the compiled script as it looks, analyzes the data it runs and further optimizes this knowledge-based machine code.
A Modern Approach to javascript:
very in-depth, detailed and regular information about JavaScript. about JavaScript. It explains the language. understand at first. So if you need a reliable source of information. language details, the specification is in the right place. the right place. But for everyday use. do not have. Also, if the browser succeeds, then there are other
What JavaScript can do:
Javascript is largely a complementary language, which means that it is unusual to write any type of HTML without any HTML at all and without JavaScript in its entirety.
Present in a web browser. Some Adobe products support JavaScript and Windows 8 launches
Change it, but JavaScript is primarily used in the browser.
JavaScript is also abbreviation AJAX (seriously JavaScript and XML),
Expected, perhaps even demanded, by today's web visitors.
Javascript can perform many tasks on the client-side of the application. For example, it can include
By creating dropdown menus, changing the text on a page, giving a website the desired interactivity,
Adding dynamic elements to a page, and helping with form registration.
Before you know what JavaScript can do - the focus of this book. You need to understand
Javascript cannot, but remember that neither discussion is comprehensive.
Javascript is largely a complementary language, which means that it is unusual to write any type of HTML without any HTML at all and without JavaScript in its entirety.
Present in a web browser. Some Adobe products support JavaScript and Windows 8 launches
Change it, but JavaScript is primarily used in the browser.
JavaScript is also abbreviation AJAX (seriously JavaScript and XML),
Expected, perhaps even demanded, by today's web visitors.
Javascript can perform many tasks on the client-side of the application. For example, it can include
By creating dropdown menus, changing the text on a page, giving a website the desired interactivity,
Adding dynamic elements to a page, and helping with form registration.
Before you know what JavaScript can do - the focus of this book. You need to understand
Javascript cannot, but remember that neither discussion is comprehensive.
Manuals
MDN (Mozilla) Javascript Reference is a manual that includes
examples and other information. In-depth information about individual language
functions, modes and more is great.
Code show:
The code is prone to errors. You will make a lot of mistakes, at least if you are human and not a robot.
But in the browser, users do not already see errors. So, if something goes wrong with the script, we won't see what's broken and can't fix it.
There is a lot of useful information about viewing errors and scripts.
Most developers lean toward Chrome Chrome or Firefox for development because these browsers have great developer tools. Other browser developers also provide tools, sometimes with special features, but are usually playing "ketchup" on Chrome or Firefox. So most developers have a "favorite" browser and switch to others if a problem is specific to the browser.
Next tutorial of javascript in the next article.