(Classic) content_changed()

Engine Compatibility

content_changed is not supported by the Node engine.

content_changed(<selector>) with parameters = {"name": "value"}

The content_changed action allows for the checking of changes to the text contents on a page using a jquery selector. This action will set an event timer that executes ever ½ second and checks the prior value of the content with the current contents. If it changes a content_change event will be raised with the optional parameters passed back.

content_changed("#foo") with parameters = {"name": "value"}

The following ruleset shows content_changed being used

ruleset a1299x167 {
	meta {
		name "Content Changed Example"
		
		author "nathan cerny"
		logging on
	}
	dispatch {
		// domain "exampley.com"
	}
	
    rule watcher is active {
        select when pageview ".*" setting ()
        {
            append('body', '<div id="res">Original Content</div>');
            content_changed("#res") with parameters = {"search_results":true};
            emit <<
                setTimeout(function () {
                    $K('#res').html("New Content");
                }, 1000);
                
            >>;
        }
    }
	rule true_listener is active {
        select when web content_change search_results "true" setting ()
        { 
            notify("Content Changed","true listener");
        }
    }
      
    
    rule false_listener is active {
        select when web content_change  search_results "false" setting ()
        {
            notify("Content Changed","false listener");
        }
    }
}

The following demonstrates the preceding rule: