Employing Ajax.Updater to retrieve a javascript file (prototype.js)

My ajax request is set up as follows:

new Ajax.Updater({ success: 'footer' }, '/dyn/actions/checkSystemMessage', {
      insertion: 'after',
      evalScripts: true
    });

The content found at /dyn/actions/checkSystemMessage includes the following script:

<script type="text/javascript><!--

document.observe('dom:loaded', function() {

    buildSystemMsg = function(SystemMsg) {
        //behind container
        behindContainer = new Element('div', {id: 'behind-system-message'});
        behindContainer.setStyle({display: 'none'});
        document.body.appendChild(behindContainer);

        //main container
        container = new Element('div', {id: 'system-message'}).update(SystemMsg);
        container.setStyle({display: 'none'});
        document.body.appendChild(container);

        //hide button
        hideBtn = new Element('a', {'class': 'close-button', 'title': 'Close System Message'}).update('Close');
        hideBtn.setStyle({ marginTop: '5px'});
        container.insert({bottom: hideBtn});

        offsetY = container.getHeight();

        //show
        if ($('mod-system-alert'))
        { new Effect.Move($('mod-system-alert'), { queue: 'front', x: 0, y: offsetY, mode: 'relative', duration: 0 }); }
        new Effect.Move($('footer'), { queue: 'front', x: 0, y: offsetY, mode: 'relative', duration: 0 });
        new Effect.Move($('page-container'), { queue: 'front', x: 0, y: offsetY, mode: 'relative', duration: 0 });      
        new Effect.Move($('nav'), { queue: 'front', x: 0, y: offsetY, mode: 'relative', duration: 0 });
        new Effect.Move($('header-container'), { queue: 'front', x: 0, y: offsetY, mode: 'relative', duration: 0 });
        Effect.BlindDown(behindContainer, { queue: 'front', duration: 0 });
        Effect.BlindDown(container, { queue: 'end', duration: 0.5 });

        hideBtn.observe('click', function() {
            if ($('mod-system-alert'))
            { new Effect.Move($('mod-system-alert'), { queue: 'front', x: 0, y: -offsetY, mode: 'relative', duration: 0 }); }
            new Effect.Move($('footer'), { queue: 'end', x: 0, y: -offsetY, mode: 'relative', duration: 0 });
            new Effect.Move($('page-container'), { queue: 'end', x: 0, y: -offsetY, mode: 'relative', duration: 0 });       
            new Effect.Move($('nav'), { queue: 'end', x: 0, y: -offsetY, mode: 'relative', duration: 0 });
            new Effect.Move($('header-container'), { queue: 'end', x: 0, y: -offsetY, mode: 'relative', duration: 0 });
            Effect.BlindUp(behindContainer, { queue: 'front', duration: 0 });
            Effect.BlindUp(container, { queue: 'front', duration: 0.5 });
            set_cookie("HideSystemMsg", true);          
        });
    }

    hideMsg = get_cookie("HideSystemMsg");
    systemMsg = '${SystemMsg}';
    if (systemMsg.length > 0 && !hideMsg)
        buildSystemMsg(systemMsg);

});

--></script>

This code snippet does not seem to be inserting the javascript after the footer element or executing the script. It relies on other included JavaScript libraries present on the page where the update is happening. Could this possibly be causing the issue I am facing?

Answer №1

It is important to note that in order for evalScripts to function properly, the response headers must include a "text/javascript" content type. This informs the AJAX library that the data being received from the server is a script.

Furthermore, there is no need for the markup

<script type="text/javascript"><!--
, and: --></script>

I trust this information proves useful to you.

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