using javascript variable inside jstl

Question

I want to iterate a HashMap in javascript using jstl. is it possible to do like this?

function checkSelection(group,tvalue){
alert(group);
alert(tvalue);

&l         


        

Answer 1

It is not possible because JSP is executed first at the server side, then the JavaScript gets executed at the client side.

You can still use the c:forEach to loop through the ${configuredGroupMap}, but you cannot do the comparison across groupMap.key and group directly.

Instead, a solution in this case is to assign the server-side groupMap.key to a client-side variable in javascript first. Then use javascript for the if check, instead of c:if.

I've modified your example to below

function checkSelection(group,tvalue){ 
alert(group); 
alert(tvalue); 

 
    alert(""); 
    var groupKey = "";

    if (groupKey == group){
        alert(""); 

    var groupValue = "";
        if (groupValue == tvalue){
            alert("both are equal"); 
    }
    }
 
}