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Angular 6 Sort Array Of Object By Date

In Angular 6, sorting an array of objects by date is a common task that developers often face when working on web applications. Sorting data is crucial for providing a seamless user experience, especially when dealing with timestamps or date-related information. In this article, we will guide you through the process of sorting an array of objects by date using Angular 6.

To begin with, you'll need to have a basic understanding of Angular 6 and how to work with arrays and objects in TypeScript. If you're new to Angular, don't worry - we'll break it down step by step.

First, let's create a sample array of objects with date properties that need to be sorted. For example, we can have an array of events with a `date` property:

Typescript

const events = [
    { name: 'Event 1', date: new Date('2022-01-15') },
    { name: 'Event 2', date: new Date('2022-01-10') },
    { name: 'Event 3', date: new Date('2022-01-20') }
];

Now, let's sort this array of objects by date in ascending order. To achieve this, we can use the `sort` method in JavaScript. Here's how you can do it in Angular 6:

Typescript

events.sort((a, b) => a.date.getTime() - b.date.getTime());

In this code snippet, we are using the `sort` method on the `events` array and passing a comparator function that compares the `date` property of each object by converting it to milliseconds using the `getTime()` method. This will sort the array in ascending order based on the date.

If you want to sort the array in descending order, you can simply reverse the order of comparison in the comparator function:

Typescript

events.sort((a, b) => b.date.getTime() - a.date.getTime());

By changing the order of `a` and `b` in the comparison, we reverse the sorting order.

Sorting an array of objects by date in Angular 6 is as simple as that! You can easily adapt this approach to other scenarios where sorting by a date property is required in your Angular applications.

Remember that sorting arrays in JavaScript modifies the original array. If you want to keep the original array unchanged, make a copy of the array before sorting:

Typescript

const sortedEvents = [...events].sort((a, b) => a.date.getTime() - b.date.getTime());

By creating a copy of the array using the spread operator `[…events]`, you ensure that the original `events` array remains unaltered after sorting.

In conclusion, sorting an array of objects by date in Angular 6 is a fundamental operation that can enhance the usability of your web applications. By following the simple steps outlined in this article, you can efficiently sort date-based data in your Angular projects. Experiment with different scenarios and customize the sorting logic to meet your specific requirements. Happy coding!

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