How can Angular incorporate JSON array values into the current scope?

I am currently working on pushing JSON data into the scope to add to a list without reloading the page. I am using the Ionic framework and infinite scroll feature.

Can someone please point out what I am doing wrong and help me figure out how to append new items to the end of the list?

Thank you for any guidance.

Example JSON array:

  var fakeListData = [
        { "DATE" : testDateTimeFormated,
            "NUMBER_OF_ALL_CALLS" : 25,
            "RESULT_DONE" : 0,
            "RESULT_NOT_INTERESTED" : 0,
            "RESULT_NO_APP" : 0
        },
        { "DATE" : testDateTimeFormated,
            "NUMBER_OF_ALL_CALLS" : 0,
            "RESULT_DONE" : 0,
            "RESULT_NOT_INTERESTED" : 0,
            "RESULT_NO_APP" : 0
        }];

Fill List Items:

// Option one (throws Chrome sendrequest error: TypeError: Converting circular structure to JSON)
    $scope.listData.push(fakeListData);

// Option two (crashes browser)    
angular.forEach(fakeListData,function(item) {
  $scope.listData.push(item);
});
javascriptjsonangularjslistionic-framework

Answer №1

Check this out

$scope.dataList=[];

dummyData.forEach(function(entry){
   $scope.dataList.push(entry);
})

Answer №2

If you want to add more items to an existing array in Angular JS, the syntax should be as follows:

// Instead of using this
// $scope.listData.push(fakeListData);

// Use this:
[].push.apply($scope.listData, fakeListData);

Additionally, when clearing an array while maintaining its reference in Angular JS, do it like this:

// Instead of creating a new array/new reference with this
// $scope.listData = [];

// Use this to keep the reference but clear the content
$scope.listData.length = 0

By following this approach, you can refill the array during the $scope lifetime and ensure that all Angular watches reflect the changes properly.

For further details, refer to: Short way to replace content of an array

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