![]() “all” - this special event fires for any triggered event, passing the event name as the first argument followed by all trigger arguments.ī(properties, ).“route” (router, route, params) - Fired by history when any route has been matched.“route” (route, params) - Fired by the router when any route has been matched.“route:” (params) - Fired by the router when a specific route is matched.“invalid” (model, error, options) - when a model’s validation fails on the client.“error” (model_or_collection, xhr, options) - when a model’s or collection’s request to the server has failed.“sync” (model_or_collection, response, options) - when a model or collection has been successfully synced with the server.“request” (model_or_collection, xhr, options) - when a model or collection has started a request to the server.“destroy” (model, collection, options) - when a model is destroyed. ![]() “change:” (model, value, options) - when a specific attribute has been updated.“change” (model, options) - when a model’s attributes have changed.“sort” (collection, options) - when the collection has been re-sorted.“reset” (collection, options) - when the collection’s entire contents have been reset.“update” (collection, options) - single event triggered after any number of models have been added, removed or changed in a collection.“remove” (model, collection, options) - when a model is removed from a collection.“add” (model, collection, options) - when a model is added to a collection. ![]() It causes the listenTo occur only once before the callback function is being removed. Object.listenToOnce(other, event, callback) Tell an object to stop listening to events. Tell an object to listen to a particular event on an other object. It extends the backbone.Model class while creating your own backbone Model. Trigger callbacks for the given event, or space-delimited list of events. Remove a previously-bound callback function from an object. The callback will be invoked whenever the event is fired. All attributes are saved as an object and it should look like this: var nameModel = a callback function to an object. Secondly, in our Backbone.Model we should listed all the attributes we want to validate. To extend our model with Backbone.Validation plugin. First of all, we need to add this line of code: _.extend(, ) Afterwards, we are ready to add our plugin. How to implement Backbone.Validation?īefore we implement Backbone.Validation in our app, we need to attach Backbone.js. Of course, it is also possible to set validation without the plugin, but it will take unnecessarily too much time and too many implemented "if" statements, when Backbone.Validation simplifies our work. Backbone.Validationīackbone.Validation is another Backbone.js plugin. Local.Storage allows the fastest access to database and it reduces a number of requests from the server to minimum. Also, it is possible to work with Local.Storage without internet connection. All the pages from the same domain, can access the same database. Local.Storage can be used per one domain. Local Storage uses "key" values which are stored as strings: localStorage.getItem("key_word") If we want to delete all the data from the server we just need to use clear() function. Set ("setItem" function, which stores data), get ("getItem" function, which retrieves data from the server) delete items ("removeItem" function, which removes item from the database). Local.Storage gives us an opportunity to: Where our Backbone Collection now looks like this: var ourCollectionName = () What functions can we use in Backbone Local.Storage? To implement the plugin to our application we just need to download it and add the code below: var exampleStorage = new Backbone.LocalStorage("ourCollectionName") Developers can choose if they are willing to store database with it's expiration date (Session Storage - whole database will disappear after closing/refreshing a page) or without, where page can persist it’s refreshing. Furthermore, Local.Storage never transfers data to the server and it has more space (at least 5mb) where we can save our database. Storing data in Local.Storage may be more secure than storing it in cookies. When someone starts making a new application and they need to save some data that they added in their project, and still, they do not have any information downloaded from the backend, they can use Local.Storage. What is Backbone Local.Storage? Backbone Local.Storage is a method which helps frontend developers to store the data locally.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |