What does jstl do?

The functions of jstl: 1. Reduce the number of Scriptlets code in JSP in a unified way; 2. Encapsulate business into JSTL for easy reuse; 3. Separate data from display; 4. Simplifies the development of JSP and Web applications; 5. Allows further integration of JSP design tools and Web application development.

JSTL is a continuously improving open source JSP tag library, which is maintained by the jakarta team of apache. JSTL can only run on containers that support JSP1.2 and Servlet2.3 specifications, such as tomcat 4.x. But it is supported as a standard in the upcoming JSP 2.0.

JSTL contains two parts: tag library and EL (Expression Language) language.

What does jstl do?

1. Reduce the number of Scriptlets code in JSP in a unified way, so that there is no Scriptlest code in the program.

2. It is very convenient to encapsulate business into JSTL of reuse.

3. Separate data and display.

4. Simplifies the development of JSP and Web applications, and makes the programming style of JSP pages unified and easy to maintain.

5. Allow further integration of JSP design tools and Web application development

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