//This is the setter of the innerHTML property in jQuery$('#regTitle').html('Hello World');
//This is the getter of the innerHTML property in jQueryvar helloWorld = $('#regTitle').html();
Should get you a better performance. I haven't recently tried to measure that (browsers should be clever these days), but if you're looking for performance it may help.
The downside is that you will have more work to keep the DOM and the references in your scripts pointing to the right object.