What is the best way to programmatically insert values into a JavaScript object?

Currently, I am delving into the world of Angular and have come across an example code snippet that looks like this:

$scope.contents = [{
    name: 'Chris Doe',
    abbreviation: 'Developer',
},{
    name: 'Ann Doe',
    abbreviation: 'Commerce',
},{
    name: 'Mark Ronson',
    abbreviation: 'Designer',
},{
    name: 'Eric Doe',
    abbreviation: 'Human Resources',
},{
    name: 'John Doe',
    abbreviation: 'Commerce',
},{
    name: 'George Doe',
    abbreviation: 'Media',
},{
    name: 'Ann Ronson',
    abbreviation: 'Commerce',
},{
    name: 'Adam Ronson',
    abbreviation: 'Developer',
},{
    name: 'Hansel Doe',
    abbreviation: 'Social Media',
},{
    name: 'Tony Doe',
    abbreviation: 'CEO',
}];

Although this setup is functional, my goal is to retrieve data from an API and then dynamically populate the $scope.contents. In my attempt to achieve this, here is what I have tried:

$http(req).success(function(res) {
    console.log(res);
    for (var i = 0; i < res.length; i++) {
        console.log(res[i]);
        //add data into scope contents here .add(res[i])
    }
}).error(function (err) { console.log(err) });

This approach does work as I can iterate through the fetched data objects from the API. However, I am struggling with the syntax to incorporate the returned data into $scope.contents. Can you guide me on the proper method to accomplish this task? Could there be a more efficient way to handle this, such as transforming $scope.contents into a class structure and appending the data as a new instance?

Answer №1

To merge arrays in JavaScript, you can utilize the Array#concat method:

$scope.contents = $scope.contents.concat(res);

Before merging, ensure that $scope.contents is an array:

if (! Array.isArray($scope.contents)) {
  $scope.contents = [];
}
$scope.contents = $scope.contents.concat(res);

Answer №2

$scope.elements is a collection, which means you have the ability to add a new item to it.

$http(req).success(function(res) {
    console.log(res);
    for (var i = 0; i < res.length; i++) {
        console.log(res[i]);
        $scope.contents.push(res[i]);
    }
}).error(function (err) { console.log(err) });

The content of res[i] in your example is not clear. The code above assumes that it is the correct object. If not, please modify with the appropriate values.

$scope.contents.push({
    title: res[i].title,
    description: res[i].description,
}); // Update as needed based on your data

Answer №3

It appears that $scope.contents is structured as an array, leading to...

$scope.contents.push(res[i]);

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