what does javascript do

JavaScript is a lightweight programming language that can be used in HTML and web. It is often used to add a variety of dynamic functions to web pages and provide users with smoother and more beautiful browsing effects; JavaScript It is also an important part of the web developer skill set.

The operating environment of this article: Windows7 system, javascript version 1.8.5, DELL G3 computer

JavaScript Introduction

JavaScript is the most popular scripting language on the Internet. This language can be used for HTML and web, and can be widely used on servers, PCs, laptops, tablets, smartphones and other devices.

• JavaScript is a scripting language

• JavaScript is a lightweight programming language.

• JavaScript is programming code that can be inserted into HTML pages.

• JavaScript, when inserted into an HTML page, can be executed by all modern browsers.

What does javascript do?

JavaScript is a network scripting language that has been widely used in Web application development. It is often used to add a variety of dynamic functions to web pages to provide users with smoother and more beautiful browsing effects. .

JavaScript is an important part of a web developer’s skill set.

Simply put, there are three main languages ​​a web developer needs, they are:

HTML: Allows you to add content to a webpage

CSS: Used to specify the layout of a webpage , style and alignment.

JavaScript: Improve the way web pages behave.

JavaScript is easy to learn but difficult to master and used for a variety of purposes, from simply enhancing website functionality to running cool games and web-based software.

What can JavaScript do?

1. Make the web page interactive, such as responding to user clicks and providing users with a better experience.

2. Can process forms, verify user input, and provide timely feedback. Save user time. For example, if the form asks you to enter your email address but you enter a mobile phone number, you should be given a reminder.

3. You can also dynamically create pages based on user operations. For example, when sending an email, add an attachment.

4. Set a cookie. A cookie is some temporary information stored on the browser, such as the website address you have visited and the user name you have used.

5. JavaScript makes it repeat regularly. The HTML paragraphs are simplified to reduce download time.

6. Data communication between the browser and the server, such as the most popular Ajax asynchronous transmission;

7. A richer interface, you can use JavaScript to include drag-and-drop components and sliders. Projects like this in order to provide a rich interface to your site visitors.

8. Server-side programming based on Node.js technology.

Recommended study: "javascript basic tutorial"

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