Example of using closure and a global variable module definition: Override this function to change the manner in which Backbone persists models to the server. Right now we should define our homeView:. In the New Project wizard, select Backbone. There are a multiple ways to proceed from now on, but the best practice is to use the el and template properties, which are magical, i.
Ensure that the View has a DOM element to render into. For example, in the Navigation view, clicking the My Account link shows either the Membership view or the Profile view, depending on whether the user is logged in. Callbacks will be bound to the view, with this set properly.
Events Events are always important when developing loosely coupled components. To send email, the template uses Postal. Conveniently enough, we do it all in the Router constructor method initialize: All other events simply proxy through. Here is an example:. For now, we just output the string representation of the JSON object in the browser.
Return an object containing all the attributes that have changed, or false if there are no changed attributes. To begin with, we can add extra properties of string type understandable by jQuery as selectors to homeView:. But what about the spinner, a GIF icon? If content within a comment thread is important to you, please save a copy. To do that, we are going to use the on function, which takes these properties: The second argument is the main function that accepts other libraries as parameters the order of parameters and modules in the array is important:.
The template has two MVC controllers: Internal method called every time a model in the set fires an event. The bust argument will be appended to the URL of each file preventing a browser from caching the files. If you open the Network tab in the Developers Tool, you can see a difference in how the files are loaded. You are responsible for properly URL-encoding the fragment in advance. More information can be found at requirejs.
Tries to keep the usual cases speedy most internal Backbone events have 3 arguments. Clears all callbacks previously bound to the view by delegateEvents. If content within a comment thread is important to you, please save a copy. Figure out the initial configuration.
Extending with Activable adds two new methods to the view, activate and deactivate. Attempt to load the current URL fragment. The router creates the activable views and maintains the state when switching views. Rapid Prototyping with JS: Trigger one or many events, firing all bound callbacks.
Creating a new one sets its routes hash, if not set statically. The following code shows how to subscribe to an event and then trigger the event: Set a hash of model attributes, and sync the model to the server.
Convert a route string into a regular expression, suitable for matching against the current location hash. Private method to reset all internal state. The syntax follows this rule: Subviews are Backbone Views that are created and used inside of another Backbone View. Server Code Now let's look at the server side.
Here is a typical example: Great, we have our initialize function. Creating a new one sets its routes hash, if not set statically. AMD allows us to organize development code into modules, manage dependencies, and load them asynchronously. If content within a comment thread is important to you, please save a copy.
Passing all will bind the callback to all events fired. Now we need to create a model which will represent a single apple and set up proper event listeners on the model. In the New Project wizard, select Backbone. We need to modify and enhance our homeView.
Return an object containing all the attributes that have changed, or false if there are no changed attributes. Bind an event to only be triggered a single time. This is how we can do it with the define method: The sender's email address is specified in the web. This is how we can implement the function in appleView:
Create a Backbone Template Project
Create a new instance of a model in this collection. Right now we should define our homeView:. Update a collection by set -ing a new list of models, adding new ones, removing models that are no longer present, and merging models that already exist in the collection, as necessary. In a single page application, the server plays only a small role in the user interface. You may bind a callback to an event with on or remove with off ; trigger -ing an event fires all callbacks in succession. The options object can contain trigger:
As you can see in the previous example, we used global scoped variables without the keyword window. A subviews concept is a great way to abstract separate UI events e. Changes can be recursively nested within change events. Typically, the server renders the initial page and then sends and receives JSON data. ClientView 'SignUp' instead of Html. Controllers In a single page application, the server plays only a small role in the user interface.