How to disable condition based buttons in jsp?

Question

how can i disable the button by checking the condition in my jsp? If true, the button is enabled; if false, the button is disabled. The condition will check the value of the variable. I know how to disable a button using javascript, but using it together with a condition in jsp is something that I cannot understand. Is it possible?

Answer 1

Try using the JSTL construct as follows:

<input type="button" <c:if test="${variable == false}"><c:out value="disabled='disabled'"/></c:if>">

For more examples, see http://www.ibm.com/developerworks/java/library/j-jstl0211/index.html

Answer 2

el :

<input type="button" ${ condition ? 'disabled="disabled"' : ''}/>

:

<input type="button" ${ someVariable eq 5  ? 'disabled="disabled"' : ''}/>

Answer 3

My approach would be something like this:

 <c:choose>
    <c:when test="${condition == true}">
      <input type="button" disabled="disabled"/>
    </c:when>
    <c:otherwise>
      <input type="button" />
    </c:otherwise>
 </c:choose>