Language Choices

Usually, whatever's most convenient Script developers, like most programmers, typically stick to the particular language they know best as long as they can, changing only when necessary. Also, most scripting languages are best suited to particular environments, and few developers try to force Python into code meant for a browser.
Application vs. standalone environments JavaScript and VBScript tend to be used in browsers and in Active Server Pages, while Perl and Python are more commonly used for CGI and more independent server-side application development.
Other limitations XML is fairly demanding in a number of areas, mostly Unicode support. Scripting languages have had to shift their character-encoding expectations, and some languages are still catching up.