Comments

Block comments start with <%-- and end with --%>

If you use HTML style comments, or JavaScript comments, the JSP engine will still evaluate the commented portions of your code. In general we use JSP style comments where possible because:

• It cuts down on the total size of the generated HTML file. The comments will still be viewable using View → Source from your browser if you use HTML style comments.
• Exposure of inadvertent comments in reduced.
• It reduces load on the server as the portion of commented code is not evaluated.