BackboneJS - Collection

Extends the backbone s collection class to create a collection.

To specify the model class, we need to override the model property of the collection class.

When a model instance is created, it is invoked by defining the initiapze function when the collection is created.

Array of models which are created inside the collection.

Returns the copy of the attributes of a model using the JSON format in the collection.

It represents the state of the model and uses the Backbone.sync to display the state of the collection.

Add a model or array of models to the collection.

Removes a model or array of models from the collection.

It resets the collection and populates with new array of models or will empty the entire collection.

It is used to update the collection with a set of items in a model. If any new model is found, the items will be added to that model.

It is used to retrieve the model from a collection by using the idor cid.

Retrieve the model from a collection by using specified index.

It is similar to the add() method which takes the array of models and pushes the models to the collection.

It is similar to the remove() method which takes the array of models and removes the models from the collection.

Add a specified model at the beginning of a collection.

It removes the first item from the collection.

Displays the shallow copy of the elements from the collection model.

Counts the number of models in the collection.

It is used to sort the items in the collection.

Sorts the items in the collection and uses comparator property in order to sort the items.

Retrieves the attributes from the model in the collection.

It is used to display the model by using the matched attribute in the collection.

It returns the model, that matches the specified attribute in the collection.

It creates an instance of the collection and returns where resources are located.

Returns the collection s data by passing through the response object and represents the data in JSON format.

It returns the shallow copy of the specified object.

It extracts the data from the model in the collection using the sync method.

It creates a new instance of the model in the collection.

_.each(pst, iteratee, [context])

Iterates each of the elements in the collection using the iteratee function.

_.map(pst, iteratee, [context])

It maps each value and displays them in a new array of values using the iteratee function.

_.reduce(pst, iteratee, memo, [context])

It reduces the pst of values into a single value and it also known as inject and foldl.

_.reduceRight(pst, iteratee, memo, [context])

It is the right associative version of reduce.

_.find(pst, predicate, [context])

It finds each value and returns the first one which passes the predicate or test.

_.filter(pst, predicate, [context])

It filters each value and returns the array of values which passes the predicate or test.

_.reject(pst, predicate, [context])

It returns the rejected elements in the pst which do not pass the predicted values.

_.every(pst, predicate, [context])

It returns true, if elements in the pst pass the predicted values.

_.some(pst, predicate, [context])

It returns true, if elements in the pst pass the predicted values.

_.contains(pst, value, [fromIndex])

It returns true, if a value is present in the pst.

_.invoke(pst, methodName, *arguments)

It invokes the method name using methodName() on each value in the pst.

_.max(pst, [iteratee], [context])

It specifies the maximum value in the pst.

_.min(pst, [iteratee], [context])

It specifies the minimum value in the pst.

_.sortBy(pst, [iteratee], [context])

It returns the sorted elements in the ascending order by using iteratee in the pst.

_.groupBy(pst, [iteratee], [context])

It spanides the collection values into the sets, grouped by using the iteratee in the pst.

_.shuffle(pst)

It returns the shuffled copy of the pst.

_.toArray(pst)

It defines an array of the pst.

_.size(pst)

It defines the number of values in the pst.

_.first(array, [n])

It specifies the first element of the array in the pst.

_.initial(array, [n])

It returns everything, but specifies the last entry of the array in the pst.

_.last(array, [n])

It specifies the last element of the array in the pst.

_.rest(array, [index])

It defines the remaining elements in the array.

_.without(array, *values)

It returns the values of all instances which are removed in the pst.

_.indexOf(array, value, [isSorted])

It returns the value if it is found at a specified index or returns -1, if it is not found.

_.indexOf(array, value, [fromIndex])

It returns the last occurrence of the value in the array or returns -1, if it is not found.

_.isEmpty(object)

It returns true if there are no values in the pst.

_.chain(obj)

It returns a wrapped object.