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How to do the console.log for EL expression in JS file

jQuery(document).ready(function() {

    $('.js-bbCheckbox').click(function(event) {
        var bbck = '${tagOne}';
        console.log (bbck);
        console.log (${tagTwo});
});

How to do the console.log for EL expression in JS file

jQuery(document).ready(function() {

    $('.js-bbCheckbox').click(function(event) {
        var bbck = '${tagOne}';
        console.log (bbck);
        console.log (${tagTwo});
});
  • javascript
  • jquery
  • jsp
  • el
Share Improve this question edited Oct 23, 2012 at 16:04 BalusC 1.1m376 gold badges3.7k silver badges3.6k bronze badges asked Oct 23, 2012 at 16:00 Shoaib Ud-DinShoaib Ud-Din 4,7343 gold badges26 silver badges23 bronze badges 1
  • Please get your terms right. The ${foo} is not a "JSTL tag". It's an "EL expression". I edited the question accordingly. In the meanwhile, please carefully read stackoverflow./tags/jstl/info to learn what JSTL really is. – BalusC Commented Oct 23, 2012 at 16:05
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2 Answers 2

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To start, you need to understand that JSP (and JSTL and EL) basically produces HTML (and CSS and JS) code. It doesn't run in sync with JavaScript code. If you rightclick the JSP page in webbrowser and do View Source then you'll see it.

I think that your concrete problem is caused because the ${tagTwo} returns a plain vanilla string which is in turn by JS been interpreted as a variable name, because it isn't been enclosed in quotes.

You need to let JSP print a fullworthy JS string instead of a variable name.

console.log('${tagTwo}');

@Shoaib Ud-Din, if you don't mind a little inline code, this should work with any included .js file that is loaded after this in the DOM:

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

<c:set var="tagOne" value="Hello World" scope="session" />
<script>
    var bbck = "<c:out value="${tagOne}" />";
    console.info("<c:out value="${tagOne}" />");
</script>

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