Use JSTL forEach loop's varStatus as an ID

Question

I want to use the count from the JSTL forEach loop, but my code doesnt seem to work.

<c:forEach items="${loopableObject}" var="theObject" varStatus="theCount">
    <div id="divIDNo${theCount}">
    </div>
</c:forEach>

produces

<div id="divIDNojavax.servlet.jsp.jstl.core.LoopTagSupport$1Status@5570e2" >

Here is the class' javadoc: http://download.oracle.com/javaee/6/api/javax/servlet/jsp/jstl/core/LoopTagStatus.html Look what getter methods it offers. Yes, among others there's a `getIndex()` :) — BalusC, Jul 06 '11 at 17:51

score 267 · Accepted Answer · edited May 02 '19 at 08:56

267

The variable set by varStatus is a LoopTagStatus object, not an int. Use:

<div id="divIDNo${theCount.index}">

To clarify:

${theCount.index} starts counting at 0 unless you've set the begin attribute
${theCount.count} starts counting at 1

edited May 02 '19 at 08:56

Andrew Tobilko

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answered Jul 06 '11 at 17:50

highlycaffeinated

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`${theCount.count}` **always** starts at 1. `${theCount.index}` starts at whatever you have set the `begin` attribute to. e.g. `` – vegemite4me Aug 22 '13 at 09:23

score 10 · Answer 2 · answered Apr 06 '16 at 15:02

you'd use any of these:

JSTL c:forEach varStatus properties

Property Getter Description

current getCurrent() The item (from the collection) for the current round of iteration.
index getIndex() The zero-based index for the current round of iteration.
count getCount() The one-based count for the current round of iteration
first isFirst() Flag indicating whether the current round is the first pass through the iteration
last isLast() Flag indicating whether the current round is the last pass through the iteration
begin getBegin() The value of the begin attribute
end getEnd() The value of the end attribute
step getStep() The value of the step attribute

score 6 · Answer 3 · edited May 07 '12 at 14:21

6

You can try this. similar result

 <c:forEach items="${loopableObject}" var="theObject" varStatus="theCount">
    <div id="divIDNo${theCount.count}"></div>
 </c:forEach>

edited May 07 '12 at 14:21

Sanath

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answered Jul 09 '11 at 01:41

Nathanphan

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score 1 · Answer 4 · edited Jul 15 '14 at 21:21

1

Its really helped me to dynamically generate ids of showDetailItem for the below code.

<af:forEach id="fe1" items="#{viewScope.bean.tranTypeList}" var="ttf" varStatus="ttfVs" > 
<af:showDetailItem  id ="divIDNo${ttfVs.count}" text="#{ttf.trandef}"......>

if you execute this line <af:outputText value="#{ttfVs}"/> prints the below:

{index=3, count=4, last=false, first=false, end=8, step=1, begin=0}

edited Jul 15 '14 at 21:21

Dan Is Fiddling By Firelight

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answered Jul 15 '14 at 21:01

jyoti pani

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@HenryKeiter there is a real answer here. Bad formatting just had all the html hidden until I fixed it. – Dan Is Fiddling By Firelight Jul 15 '14 at 21:22
This provides the exact same answer as was already provided 3 years earlier (use `varStatus.count`), only much less readable. Why bother reading other people's answers? ;) – rustyx Mar 30 '15 at 20:18

Use JSTL forEach loop's varStatus as an ID

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