CODEWITHSUNDEEP
jspjstl
RyanSoper
RyanSoper

Reputation: 231

Whats this "c:" all about?

I'm very inexperienced with JSP, and have come across a section of what I assume is JS (or some variant of it at least?) it goes as such:

<c:forEach items="${errorsMap}" var="messages" varStatus="status">

and another example of what I assume is a different function:

<c:set var="errorsArePresent" value="true" />

I assume that that the forEach one is to provide a loop through every element in a list (in this case errorsMap, and that 'set' sets a variable to the variable, what I am seeking clarification on is why these lines have c: in front of them? What does it mean?

If it helps, this script is contained in a JSP and is in amongst a container.

Upvotes: 0

Views: 409

Answers (3)

gohar.gasparyan
gohar.gasparyan

Reputation: 233

It is JSTL Core tags(JSP Standard Tag Library). You can check documentation http://docs.oracle.com/javaee/5/tutorial/doc/bnakc.html

Upvotes: 1

MeanwhileInHell
MeanwhileInHell

Reputation: 7053

It is the prefix that has been used when including the JSTL Core library, likely something like this:

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

...so when referencing functions from that library, you prefix it with the c: to distinguish it from other potential function name conflicts.

See here

Upvotes: 1

sp00m
sp00m

Reputation: 48827

It's the JSTL core library (documentation).

Nothing to do with JavaScript, JSTL means "JavaServer Pages Standard Tag Library", i.e. a taglib extending the JSP specification (more info on Wikipedia).

Upvotes: 3

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