Mvc validating models

30-Jul-2019 00:44 by 2 Comments

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Events do not have to be declared before they are bound, and may take passed arguments.For example: Bind a callback function to an object.

Events is a module that can be mixed in to any object, giving the object the ability to bind and trigger custom named events.Backbone is available for use under the MIT software license.You can report bugs and discuss features on the Git Hub issues page, on Freenode IRC in the = 1.11.0), and json2for older Internet Explorer support.If you're strict about not allowing views to reach outside of themselves, it helps keep your interface flexible — allowing views to be rendered in isolation in any place where they might be needed.Backbone remains unopinionated about the process used to render View objects and their subviews into UI: you define how your models get translated into HTML (or SVG, or Canvas, or something even more exotic).Whenever a UI action causes an attribute of a model to change, the model triggers a "change" event; all the Views that display the model's state can be notified of the change, so that they are able to respond accordingly, re-rendering themselves with the new information.

In a finished Backbone app, you don't have to write the glue code that looks into the DOM to find an element with a specific id, and update the HTML manually — when the model changes, the views simply update themselves.

If no event is specified, callbacks for all events will be removed. object.off("change", on Change); // Removes all "change" callbacks.

object.off("change"); // Removes the `on Change` callback for all events.

The callback will be invoked whenever the event is fired.

If you have a large number of different events on a page, the convention is to use colons to namespace them: Remove a previously-bound callback function from an object.

In rich web applications, we still want to provide linkable, bookmarkable, and shareable URLs to meaningful locations within an app.

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