backbone.jsHow do I add a change event handler to a Backbone.js object?
Adding a change event handler to a Backbone.js object is simple. First, create a Backbone.js object and assign it to a variable:
var myObject = new Backbone.Model({
name: 'John',
age: 30
});
Then, use the on()
method to bind a change event handler to the object:
myObject.on('change', function() {
console.log('The object has changed!');
});
This will cause the event handler to be invoked whenever the object's data changes. To test this, we can change the object's data and see the output:
myObject.set('name', 'Bob');
// Output: The object has changed!
The on()
method takes two parameters: the event name (in this case, change
) and the event handler function. The event handler function will be invoked with the object as its first parameter.
Code explanation
var myObject = new Backbone.Model({ name: 'John', age: 30 });
- Create a Backbone.js object and assign it to a variable.myObject.on('change', function() { console.log('The object has changed!'); });
- Bind a change event handler to the object.myObject.set('name', 'Bob');
- Change the object's data.
Helpful links
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