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This article mainly introduces the characteristics of scripting language, the article is very detailed, has a certain reference value, interested friends must read it!

The characteristics of scripting language: scripting language is between HTML and C, C++, Java, C # programming languages; 2, scripting language is composed of program code; 3, scripting language is an interpretive language, which does not need to be compiled and can be used directly, and the interpreter is responsible for interpretation; 4, scripting languages generally exist in the form of text; 5, simple, easy to learn, easy to use.

Scripting language (Script languages,scripting programming languages,scripting languages) is a computer programming language created to shorten the traditional write-compile-link-run (edit-compile-link-run) process.

Although many scripting languages go beyond the field of computer simple task automation and are mature enough to write elaborate programs, they are still called scripts. Almost all computer systems have a scripting language at all levels. Including operating system layer, such as computer games, network applications, word processing documents, network software and so on.

In many ways, high-level programming languages and scripting languages intersect each other, and there is no clear boundary between the two. A script can automate interactive operations that are supposed to be done with the keyboard.

A Shell script consists mainly of commands that would otherwise need to be entered on the command line, or in a text editor, users can use scripts to combine common operations into a sequence. The language that is mainly used to write such scripts is called scripting language. Many scripting languages actually go beyond the instructions of a simple sequence of user commands and can write more complex programs.

Features of scripting languages:

1. Scripting languages (JavaScript,VBscript, etc.) are between HTML and programming languages such as C-Magi, C-language, Java-Magi-C #, etc. HTML is commonly used to format and link text. Programming languages are usually used to issue a series of complex instructions to the machine.

2. Scripting languages also have many similarities with programming languages. Their functions are similar to programming languages, and they also involve variables. The biggest difference between the programming language and the programming language is that the syntax and rules of the programming language are more strict and complex.

3. The relationship between script and program code: script is also a language, which is also composed of program code.

4. Scripting language is an interpretive language, such as Python, vbscript,javascript,installshield script,ActionScript, etc., unlike c\ C++, which can be compiled into binary code and exists in the form of an executable file, scripting language does not need to be compiled and can be used directly, and the interpreter is responsible for interpretation.

5. Scripting languages generally exist in the form of text, similar to a command.

For example, if you set up a program called aaa.exe, you can open a file with a .aa extension and specify a set of rules (syntax) for the writing of .aa files. When others write .aa files, their own programs use these rules to understand the writer's intentions and respond, then this set of rules is a scripting language. [5]

6. Relative to compiled computer programming language: when a program developed in scripting language is executed, it is interpreted and executed by its corresponding interpreter (or virtual machine). The system programming language is precompiled into machine language and executed. The main feature of scripting language is that the program code is not only a script, but also a final executable file. Scripting languages can be divided into independent and embedded scripting languages. Independent scripting languages are completely dependent on the interpreter when they are executed, while embedded scripting languages are usually embedded in programming languages (such as Corey Centrum, VB, Java, etc.).

7. Compared with the system programming language: the difference is that the script language is interpreted and the system programming language is compiled. The interpreted language provides fast conversion because there is no compilation time, by allowing users to write applications at runtime without the time-consuming compilation / packaging process. The interpreter makes the application more flexible, and the code of the scripting language can be generated and executed in real time. Scripting languages usually have the characteristics of simple, easy to learn and easy to use, and the purpose is to enable programmers to write programs quickly.

Advantages

Rapid development: scripting languages greatly simplify the cycle of development, deployment, testing, and debugging.

Easy to deploy: most scripting languages can be deployed at any time without the time-consuming compilation / packaging process.

Integration with existing technologies: scripting languages are surrounded by component technologies such as Java or COM, so they can make effective use of code.

Easy to learn and use: many scripting languages usually have lower technical requirements, making it easier to find a large number of suitable technicians.

Dynamic code: scripting language code can be generated and executed in real time, which is an advanced feature that is useful and necessary in some applications (such as dynamic types in JavaScript).

Shortcoming

Scripting languages are not comprehensive enough: they require the existence of a "real" programming language and must find a database driver to build it into the scripting language.

Scripting languages are not the best choice for software engineering and building code structures, such as object-oriented and component-based development.

Scripting languages are not usually "generic" languages, but can be adapted to specific applications, such as PHP.

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