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This article mainly introduces "what is JavaScript in the front end of Web". In the daily operation, I believe that many people have doubts about what is JavaScript in the front end of Web. The editor consulted all kinds of materials and sorted out a simple and easy-to-use method of operation. I hope it will be helpful to answer the question of "what is JavaScript in the front end of Web?" Next, please follow the editor to study!

JavaScript is a programming language that runs on a web browser. Learning from the very beginning to be clear about our learning goals, do not learn for a long time to know that JS is a programming language, that is, to write code, and the characteristic is that the mess is over, so it is not good to learn JS.

To always grasp its positioning, exactly its positioning in the entire Web: it belongs to the core of the front end, mainly used to manipulate and re-adjust the DOM, by modifying the DOM structure, so as to achieve the purpose of modifying the page effect. To use this central idea to guide all subsequent JS learning, we can form a conditioned reflex, the general direction is good.

What on earth is JavaScript?

JavaScript is a scripting language belonging to the network, which has been widely used in Web application development. It is often used to add a variety of dynamic functions to web pages and provide users with a more smooth and beautiful browsing effect. Usually JavaScript scripts implement their own functions by embedding them in HTML.

JavaScript is mainly added to websites built with HTML and CSS, and plays a role in realizing a variety of page dynamic effects. For example, such effects as the style of the broadcast picture displayed on the web page and the prompt message displayed when the content entered on the consulting platform is wrong. In addition, JavaScript is also needed for shopping carts and cost estimates when purchasing goods on the mall website. So even if it's not obvious, it's still a language that coders often use.

JavaScript is a multi-functional development language. In addition to the use of adding actions to web pages, JavaScript can be used to implement many other functions. For example, it can develop a variety of website applications, such as "chat tools" and "currency charts", which can be modified in real time, which is one of the main attractions of JavaScript.

What are the characteristics of JavaScript?

Scripting language, JavaScript is an interpreted scripting language, C, C and other languages are compiled first and then executed, while JavaScript is explained line by line in the process of running the program.

Object-based, JavaScript is an object-based scripting language that can not only create objects, but also use existing objects.

Simple, the JavaScript language uses the weak type variable type, does not make the strict request to the data type, is based on the Java basic statement and the control script language, its design is simple and compact.

Dynamic, JavaScript is an event-driven scripting language that responds to user input without going through a Web server. When visiting a web page, JavaScript can directly respond to these events when the mouse clicks or moves up and down, window movement and other operations in the web page.

Cross-platform, JavaScript scripting language does not depend on the operating system, only needs the support of the browser. Therefore, a JavaScript script can be written and used on any machine, on the premise that the browser on the machine supports the JavaScript scripting language, and JavaScript is currently supported by most browsers.

At this point, the study of "what is JavaScript in the front end of Web" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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