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Now this relationship has been inverted - client applications pull raw data from the server and render it into the browser when and where it is needed.Think of the Ajax shopping cart which doesn’t require a refresh on the page when adding an item to your basket.
Its nature was to make Ajax requests then update text on the page and so on.Most likely, you would end up with a nightmarish tangle of UI callbacks entwined with business logic, destined to be discarded by the poor soul who inherits your code.Thankfully, there are a growing number of Java Script libraries that can help improve the structure and maintainability of your code, making it easier to build ambitious interfaces without a great deal of effort.has quickly become one of the most popular open-source solutions to these issues and in this book we will take you through an in-depth walkthrough of it.However, this pattern with j Query revealed that we have implicit model data on the client side.With the server no longer being the only place that knows about our item count, it was a hint that there was a natural tension and pull of this evolution.
The rise of arbitrary code on the client-side which can talk to the server however it sees fit has meant an increase in client-side complexity.
Good architecture on the client has gone from an afterthought to essential - you can’t just hack together some j Query code and expect it to scale as your application grows.
Not so long ago, “data-rich web application” was an oxymoron.
Today, these applications are everywhere and you need to know how to build them.
Traditionally, web applications left the heavy-lifting of data to servers that pushed HTML to the browser in complete page loads.
The use of client-side Java Script was limited to improving the user experience.