The Backbone.JS Initialize() collection method is used to create a model instance.
Syntax:
Backbone.Collection.Initialize ()
Example:
<title>Initialize 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>
<script type="text/javascript">
var X = Backbone.Model.extend({
defaults: {
name: "Tom",
age: 20
},
initialize: function(){
document.write("Hello World");
}
});
var Y = Backbone.Collection.extend({
model: X
});
var student = new X({
name: "Jim",
age: 10
});
var Z = new Y([student]);
document.write("<br>" + JSON.stringify(Z.models));
</script>Hello World<br>[{"name":"Jim","age":10}]
<title>Initialize 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>
<script type="text/javascript">
var X = Backbone.Model.extend({
defaults: {
name: "Tom",
age: 20
},
initialize: function(){
document.write("Hello World");
}
});
var Y = Backbone.Collection.extend({
model: X
});
var student = new X({
name: "Jim",
age: 10
});
var Z = new Y([student]);
document.write("<br>" + JSON.stringify(Z.models));
</script>Hello World<br>[{"name":"Jim","age":10}]
Initialize Collection Example Hello World
[{"name":"Jim","age":10}]
Output:
Hello World
[{"name":"Jim","age":10}]
Hello World
[{"name":"Jim","age":10}]
Hello World
[{"name":"Jim","age":10}]
Explanation:
In the above example, the model ‘X’ includes the default values and is extended using the Backbone.Model class. Here, the model instance is invoked by defining the initialize function, and ‘Y’ is a collection instance.