Encountering a problem with AngularJS when attempting to access an array and display an alert message

While working with Angular, I encountered an issue in trying to access content stored within an array.

Upon reviewing the code,

console.log(JSON.stringify($scope.lineItems))
was returning [[]]. However, when inspecting or setting a breakpoint on this line, the following information was revealed:

> 0: Array[0]
length: 1
> __proto__: Array[0]

By clicking on > 0: Array[0], another segment appeared displaying:

> 0: Array[0]
    length: 0
    __proto__: Array[0]
> length: 1
  __proto__: Array[0]

The objective now is to trigger an alert with noLinesAlert.show() whenever 0: Array[0] is detected.

The current code snippet provided attempts to address this issue, but due to confusion with accessing the necessary information, it's not functioning as intended:

$scope.lineItems = lines;
  console.log(lines);
  console.log(JSON.stringify($scope.lineItems));
  if ($scope.lineItems.length === 0) {
    noLinesAlert.show();
  } else {
    noLinesAlert.hide();
  }
}

Answer №1

According to your description, the solution you require is as follows:

if ($scope.lineItems[0].length === 0) {
    noLinesAlert.show();
} else {
    noLinesAlert.hide();
}

Answer №2

In reality, the correct method I used was:

if(JSON.stringify($scope.lineItems) === '[[]]')

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