Models contain dynamic data and its logic. Logic such as conversions, validations, computed properties and access control fall under the Model category. As it contains all the application data, a model is also called as the heart of JavaScript application.
The following table lists down all the methods which you can use to manipulate the BackboneJS-Model −
| S.No. |
Methods & Description |
| 1 |
extend
It extends the backbone.Model class while creating your own backbone Model.
|
| 2 |
initialize
When a model instance is created, the class's constructor gets called and it is invoked by defining the initialize function when the model is created.
|
| 3 |
get
It gets the value of an attribute on the model.
|
| 4 |
set
It sets the value of an attribute in the model.
|
| 5 |
escape
It is like the get function, but returns the HTML-escaped version of a model's attribute.
|
| 6 |
has
Returns true, if attribute value defined with non-null value or non-undefined value.
|
| 7 |
unset
It removes an attribute from a backbone model. |
| 8 |
clear
Removes all attributes, including id attribute from a backbone model.
|
| 9 |
id
It uniquely identifies the model entity, that might be manually set when a model is created or populated or when a model is saved on the server.
|
| 10 |
idAttribute
Defines a model's unique identifier which contains the name of the member of the class which will be used as id.
|
| 11 |
cid
It is an auto generated client id by Backbone which uniquely identifies the model on the client.
|
| 12 |
attributes
Attributes defines property of a model.
|
| 13 |
changed
Changes all the attributes that have changed after setting the attributes using the set() method.
|
| 14 |
defaults
Sets a default value to a model, that means if the user doesn't specify any data, the model won't fall with an empty property. |
| 15 |
toJSON
Returns a copy of the attributes as an object for JSON stringification.
|
| 16 |
sync
It is used to communicate with the server and to represent the state of a model.
|
| 17 |
fetch
Accept the data from the server by delegating sync() method in the model.
|
| 18 |
save
Saves the data of the model by delegating to sync() method which reads and saves the model every time when a Backbone calls it.
|
| 19 |
destroy
Destroys or removes the model from the server by using the Backbone.sync method which delegates the HTTP "delete" request.
|
| 20 |
validate
If the input is invalid, it returns a specified error message or if the input is valid, it doesn't specify anything and simply displays the result.
|
| 21 |
validationError
It displays the validation error, if the validation fails or after the invalid event is triggered.
|
| 22 |
isValid
It checks the model state by using the validate() method and also checks validations for each attribute.
|
| 23 |
url
It is used for the instance of the model and returns the url to where the model's resource is located.
|
| 24 |
urlRoot
Enables the url function by using the model id to generate the URL.
|
| 25 |
parse
Returns the model's data by passing through the response object and represents the data in the JSON format.
|
| 26 |
clone
It is used to create a deep copy of a model or to copy one model object to another object.
|
| 27 |
hasChanged
Returns true, if the attribute gets changed since the last set.
|
| 28 |
isNew
Determines whether the model is a new or an existing one.
|
| 29 |
changedAttributes
It returns the model's attributes that have changed since the last set or else becomes false, if there are no attributes.
|
| 30 |
previous
It determines the previous value of the changed attribute.
|
| 31 |
previousAttributes
Returns the state of the all the attributes prior to the last change event.
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