Recently we were looking for ways to do rapid building of prototype pages during our UI development. I still remember my first web project when I built an air ticket reservation system over a decade ago. Back then, we were concatenating HTML / Javascript inside servlet code to crank out the UI. The joy of building a cool new system was quickly offset by the frustration in dealing with escape / unescape single double quotes for multiple layers of Javascript inside Java code. Over these years, things evolved a lot in trying to address this separation of logic and presentation issue. We had JSP, Strut, Velocity, FreeMarker etc. They were running toward that goal with one getting closer than the other. But logic code still mingles with HTML/CSS . If not used cautiously, they can still yield spaghetti code faster than developers can chew.

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