Modifying specific attributes of an object within the $scope: A step-by-step guide

When working with Angular, if you have code in the view that looks like this:

<span ng-model="foo.bar1"></span>
<span ng-model="foo.bar2"></span>
<span ng-model="foo.bar3"></span>

Due to how Angular maps objects, you cannot simply do this in the controller:

$scope.foo.bar2 = "something";

Instead, you must reassign the entire object like so:

$scope.foo = {
  bar1: "value1",
  bar2: "something",
  bar3: "value2"
}

Therefore, whenever you need to change just one property of the object, you will need to reassign all other values as well.

Answer №1

To get started, all you have to do is initialize the code. Below is a sample snippet of code to help you with that:

Within the controller

$scope.person ={
age: 30,
sex: 'male',
name: 'hero',
occupation: 'actor'

}

Within the HTML file

 <h3>Person Details</h3>
 <p><input type="text" ng-model="person.occupation"></p>
   <span>{{person.name}},</span>
   <span>{{person.age}},</span>
   <span>{{person.sex}},</span>
   <span>{{person.occupation}}</span>

By entering different values in the text box, you will see those changes reflected in the person details below.

Answer №2

If your code looks like this:

$scope.data = {
  key1: "value1", // default value for all keys
  key2: "value2",
  key3: "value3"
}

or even simpler:

$scope.data = {};

Then you are able to update the values later on, like so:

$scope.data.key2 = "new value";

This allows flexibility in modifying the data as needed.

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