Managing and enumerating array elements in an angular.js controller

Question

Managing and enumerating array elements in an angular.js controller

In my Angular application, I am working with an array of objects that each contain a "ready" field storing a timestamp. My goal is to determine the count of objects where the "ready" timestamp is earlier than the current time. How can I achieve this?

This is what I currently have:

$scope.getDatetime = new Date();
$scope.numberReady = $filter('filter')($scope.array, {ready <  $scope.getDatetime}).length;

It's clear that I cannot directly use ready < $scope.getDatetime. However, conceptually, this is the comparison I aim to make.

javascript angularjs

Answer 1

Answer №1

If you want to filter data using pure ES5 filter method without relying on Angular:

$scope.getDatetime = new Date();
$scope.numberReady = $scope.array.filter(function(obj) {
    return obj.ready < $scope.getDatetime;
}).length;

Alternatively, you could utilize Angular's filter function like this:

$scope.getDatetime = new Date();
$scope.numberReady = $filter('filter')($scope.array, function(obj) {
    return obj.ready <  $scope.getDatetime;
}).length;

Keep in mind that the Angular filter is just a wrapper around the native filter method, so it may not be the most efficient solution for this scenario.

Answer 2

If you want to filter data using pure ES5 filter method without relying on Angular:

$scope.getDatetime = new Date();
$scope.numberReady = $scope.array.filter(function(obj) {
    return obj.ready < $scope.getDatetime;
}).length;

Alternatively, you could utilize Angular's filter function like this:

$scope.getDatetime = new Date();
$scope.numberReady = $filter('filter')($scope.array, function(obj) {
    return obj.ready <  $scope.getDatetime;
}).length;

Keep in mind that the Angular filter is just a wrapper around the native filter method, so it may not be the most efficient solution for this scenario.

Managing and enumerating array elements in an angular.js controller

Answer №1

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