コレクションモデルから要素の浅いコピーを返します。
collection.slice(begin, end)<!DOCTYPE html>
<html>
<head>
<title>Collection Example</title>
<script src = "https://code.jquery.com/jquery-2.1.3.min.js"
type = "text/javascript"></script>
<script src = "https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.2/underscore-min.js"
type = "text/javascript"></script>
<script src = "https://cdnjs.cloudflare.com/ajax/libs/backbone.js/1.1.2/backbone-min.js"
type = "text/javascript"></script>
</head>
<body>
<script type = "text/javascript">
var City = Backbone.Model.extend();
//The variable "Cities" contains the elements which are to be displayed when 'slice()' method is called
var Cities = ['NewYork', 'Sydney', 'Durban', 'Lancashire', 'Kent'];
//The collection instance "cities" uses the "Cities" variable to represent the model elements in
//the collection
var cities = new Backbone.Collection (Cities, {
model:City
});
//The slice(1,4) method begins the element extraction at index "1" and ends the extraction of elements
//up to the index "4"
var mycity = Cities.slice(1,4);
//The 'length' property specifies the total number of sliced elements between 1 and 4
document.write("Number of Cities:", +mycity.length);
document.write("<br>");
document.write(JSON.stringify(mycity));
</script>
</body>
</html>上記のコードがどのように機能するかを確認するために、次の手順を実行してみましょう-
