The Backbone.JS Previous() model is used to determine the previous value of the changed attribute of a model.
Syntax:
Model.Previous (attributes)
Parameters: attributes: This parameter is used to specify the properties of a model.
Example:
Example
Output:
Value of msg1 after set: {"msg1":"Hello World."}
Previous value of msg1: HELLO WORLD.
Explanation: In the above example, the msg1 vale has changed and thus the previous value is determined along with the changed value.
