JSP tutorial Part 5:JSP Tags

JSP Tags

Tags in Jsp:

Tags in JSP can be categorized as

-comments

-Scripting elements

-Directive elements

-Action Elements

·         Anything other than the above mentioned four categories fall under template data.

·         This will include all HTML tags and text.

JSP Comments:

JSP comment marks text or statements that the JSP container should ignore. Following is the syntax of JSP comments:

<%-- comment here --%>

“Note: in HTMl <!- -comment here   --%> “

JSP Scripting Elements

Scripting elements are elements in the JSP page that contains java code. JSP contains 3 types of scripting elements as shown below:

1. Declarations:

–Format: <%! code %>

–Inserted into the body of the servlet class, outside of any existing methods

2. Expressions:

–Format: <%= expression %>

–Evaluated and inserted into the servlet’s output i.e., results in something

like out.print(expression) i.e. expression placed in jspServiceinside

out.print()

3. Scriptlets:

–Format: <% code %>

inserted into the servlet jspService() method