What are the differences between jsp and javascript?

The difference between jsp and javascript: 1. jsp has JSTL support to handle some complex functions, while JavaScript has different data types; 2. jsp has scriptlets that add Java code between HTML, while JavaScript has many Built-in functions.

The operating environment of this tutorial: Windows 7 system, JavaScript version 1.8.5, DELL G3 computer.

The difference between jsp and javascript:

1. Java Server Pages is a dynamic web page technology, while JavaScript is a scripting language that can make static HTML content dynamic .

2. Java Server Pages have scriptlets that add Java code between HTML, and JavaScript has many built-in functions that can modify data using JavaScript objects based on inheritance based on the prototype pattern in the object-oriented programming model.

3. Java Server Pages has JSTL support to handle some complex functions, while JavaScript has different data types, such as Boolean, Number, String, Date, Math, HTML DOM and RegExp, etc.

4. Java Server Pages supports almost all web browsers, while JavaScript does not support cross-browser functions, resulting in the failure to execute a small number of functions during browser changes, resulting in disadvantages.

5. Java Server Pages will be rendered and served from the backend through the web server, while JavaScript is a scripting language that can be used on both the client and server side, or on the browser side or client side, where The code will be compiled in-house.

JavaScript built-in compiler is called JIT compiler, then it will be interpreted in the browser and the execution of the module happens later on the client environment (i.e. the browser).

6. Java Server Pages has the JSR specification, which is Oracle's standard, while JavaScript has the latest standard, called ES 9 (ECMAScript standard), which supports advanced functional aspects and several high-level aspects in its programming model. function.

7. Java Server Pages has limitations in developing complex functions, while JavaScript has a standard specification that can use the powerful functional programming aspect of JS to operate complex modules.

8. Java Server Pages has JSP implicit object capabilities in the web container, while JavaScript has lifting capabilities that can be used in the ES 6 standard by using the let keyword.

9. Java Server Pages supports Expression Language (EL), which provides access to functions and data in Java objects, while JavaScript has implicit prototype references for referencing data in JS objects.

10. Java Server Pages has a JSP compiler, which converts JSP into Servlets to interpret web page content and display, while JavaScript has a Javascript interpreter to parse the code called a Javascript engine.

Extended information:

Advantages of JavaScript

1. Speed. Client-side JavaScript is very fast because it runs instantly in the client browser. Unless external resources are required, JavaScript is not blocked by network calls to the backend server. It also doesn't have to be compiled on the client side, which

gives it a certain speed advantage (granted, adds some risk depending on the quality of the code being developed).

2. Simple. JavaScript is relatively simple to learn and implement.

3. Popularity. JavaScript is available everywhere on the web. There are many resources for learning JavaScript. StackOverflow and GitHub have many projects using Javascript, and the language as a whole has gained a lot of attention in the industry in recent years, in particular.

4. Interoperability. JavaScript plays well with other languages ​​and can be used in a wide variety of applications. Unlike PHP or SSI scripts, JavaScript can be inserted into any web page, regardless of file extension.

JavaScript can also be used in scripts written in other languages, such as Perl and PHP.

5. Server load. The client reduces the demand on the website server.

6. Rich interfaces. Drag and drop components or sliders to provide a rich interface to your website.

7. Extended functions. Third-party add-ons like Greasemonkey enable JavaScript developers to write JavaScript code snippets that can be executed on

desired web pages to extend their functionality.

8. Versatility. Today, there are many ways to use JavaScript with Node.js servers. If you bootstrap node.js with

Express, use a document database like mongodb, and use

JavaScript on the front-end for the client, you can develop your entire JavaScript app from front to back using just JavaScript program.

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