Using JSP code in JavaScript

Question

I want to use JSTL\'s fmt tag in JavaScript to localize my alert messages. My JavaScript file is a standalone file and when I include fmt tag in js, the file browser gives J

Answer 1

You should strive to keep your javascript code in a separate file from the jsp-code. This is to get browser caching, easier maintenance, reuse across pages, and to allow compression.

I suggest that you create a global object for text in the jsp, to be used by your javascript files. Like this:

<script>
    var text = text || {}; // play well with other jsps on the page
    text.this_page_name = {
        required_field_error: "<fmt:message key="required.field.error"/>",
        system_error: "<fmt:message key="system.error"/>"
    };
</script>

Later you use it in your javascript:

alert(text.this_page_name.required_field_error);