managing object property retrieval in javascript

Take a peek at my JavaScript below:

$scope.tasks = [
    {
    "name":"task 1",
    "date":"2 May 2014"
    },

    {"name":"task 2",
    "date":"2 May 2014"
    }
];

This is how the HTML looks like:

<ul ng-repeat="task in tasks">
    <li>{{task.name}}</li>
</ul>

In order to maintain cleaner markup, I want to avoid using {{task.name}}. I attempted to simplify it with

$scope.tasks = $scope.tasks.name;
in the JavaScript, but unfortunately, it did not work as expected.

Answer №1

Follow these steps to achieve it.

In order for the changes to be detected in your controller, you must set up a watch:

// Triggered whenever there is a change in tasks.
$scope.$watch("tasks", function(tasks) {
  // Tasks may be undefined or null.
  if (tasks) {
    // Use map to extract the titles from the array.
    $scope.taskTitles = tasks.map(function(task) { return task.title })
  }
}

Failing to do this will result in your list not updating when tasks are modified. This 'watching' mechanism plays a crucial role in Angular.

Next, when working with templates, ensure you iterate through the data:

<ul ng-repeat="task in taskTitles track by $index">
    <li>{{task}}</li>
</ul>

If there is a possibility of duplicate titles, utilize the track by clause.

While it can be done differently, sticking to the current method is recommended for simplicity.

Answer №2

$scope.tasks = [
    {
    "name":"task 1",
    "date":"2 May 2014"
    },

    {"name":"task 2",
    "date":"2 May 2014"
    }
];

var temp = [];

for(var task in $scope.tasks){
    temp.push(task.name);
}

$scope.tasks = temp;

Executing this code will achieve the desired outcome, but it will also override your original object.

Your approach seems overly complicated, indicating a possible struggle with fundamental Angular concepts.

In my opinion, implementing this modification could potentially introduce more issues. Within your ng-repeat, you are instructing Angular to iterate through each task in tasks and display the name of each task by referencing task.name. Excluding the term task would only make your code harder to comprehend, as it wouldn't be clear which specific name is being referenced.

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