What's the difference between a programming language, a scripting language, and a markup language?
不好意思，没有找到法帖的地方。
借个地方哈！
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Top Answer out of 3
The primary difference between a "programming language " (C, C++, VB etc.) and a "scripting language " (PHP, ASP, JSP, JavaScript, VBScript)is that code written in a programming language needs to be compiled before it is run. Once it is compiled, it can be run any number of times.
Scripting languages, on the other hand, are interpreted at run-time. This means that every time you want to run the program, a separate program needs to read the code, interpret it, and then follow the instructions in the code. Compiled code has already been interpreted into machine language, so it is will typically execute faster because the conversion into machine language has already been done.
Markup languages (HTML, XML) are somewhat different from both of the others. A markup language is simply a set of tags that are used to "mark up " text documents so that sections of text can be logically arranged and labeled. These documents can be viewed as plain text, or, more commonly, are viewed through a browser. The browser parses the document, looking for markup tags, and it then arranges the text and/or formats it according to the values in the tags.
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Answer 2 out of 3
The answer is basically correct, but here are a few modifications:
Not all programming languages are compiled the same. C/C++ and VB are compiled languages, Java can be considered compiled or not depending on your definition of compiled. Perl is interpretted and very much considered a language... there are others that fall into this category as well.
ASP is a construct of JScript, VBScript or C# and is not really a language as much as a way of using a language for server side development.
JSP is a shortcut method for developing servlets. JSP pages are converted to Java source code and then compiled into servlets.
The markup language information is a little out-dated. HTML is used for web page development and is viewed in a browser, while XML is used for any kind of data. It is "human-readable " in that you can view the text it is constructed from, though it may mean little to you. XML can be used to create and define other MLs such as MathML, SMIL, SVG, or XML-RPC. None of these represent text documents, they represent mathematical equations, multimedia content, vector graphics and remote procedure callls respectively.
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Answer 1 out of 3
While the previous descriptions of the three "languages " explain them, and distinguish between the two "procedural " languages that describe procedures to run, and the "formatting " languages that "mark up " data, a simple nuance can be used to distinguish between "programming " and "scripting " languages, especially those in the fringe areas.
Using the question of compilation versus interpretation to define languages gives a "fuzzy " definition for languages like Java, which can be compiled to a byte code which is then interpreted at runtime. And there have long been programming tools such as Borland 's Turbo C / Pascal which would interpret languages that were normally compiled, to allow more rapid development.
The difference between "programming " and "scripting " is better defined by usage, or application, as well as scope and purpose. A programming language is used for building standalone projects, or "applications "; a scripting language is used to write "scripts " that interact with other data or systems to perform parts of a task rather than an entire workflow.
An example might make this clearer. Imagine an accounting application program used in a large corporation. The program would be written in a programming language by a team of developers, probably at some other company, a software house. It would have a long lifecycle, and have many features. One of them might be to generate a series of invoices. This would be one of many tasks done with the program, which runs for extended periods of time. But it might be necessary to separate the invoices, sending some to a printer in the mail room, others to a fax machine, and still others to be sent via email. This task might be accomplished by a local programmer, who writes a simple "script " that sorts through the accounting program 's output files and dispatches them appropriately. That little snippet of local, customized programming would be a script, written in a scripting language. The script would be started, perform its one task, and stop.
Programming languages are used to write programs, which can run for a while and do multiple things.
Scripting languages are used to write scripts, which run for a short duration to perform a single, simple task.
Of course, there are applications programs that have been cobbled together out of collections of scripts, and there are programmers who use a traditional programming language to write a full-blown program to erase a file, but the general sense of the range of usages should now be clear.
Some languagees such as Perl or Visual Basic can be used for both kinds of task, and therefor can be characterized as one or the other.
[解决办法]
This discuss is pointless just like what 's the different between a apple,a banana and a orange!Just eating~
