How to do paging in AngularJS?

How to do Paging in AngularJS? 📄📑👨‍💻

So, you have a large dataset of approximately 1000 items in-memory, and you want to implement a pager to navigate through this data. But, you're not quite sure how to accomplish this in AngularJS. Don't worry, I got you covered! 😎🆒

Understanding the Problem 🔍

To implement paging in AngularJS, we need to break down the large dataset into smaller chunks (pages) and then provide navigation options to move between these pages. In your case, you also mentioned using a custom filter function to refine the results, which is a great approach.

The Solution 🎉

1. First, let's create a custom filter function to handle the filtering of results. You can implement this as a separate function or within your AngularJS controller.

app.filter('customFilter', function() {
  return function(items, searchText) {
    // Your filtering logic goes here
  };
});

1. Now, create a function to calculate the total number of pages based on the filtered dataset's length and a fixed number of items per page. Let's assume you want to display 10 items per page.

$scope.getNumberOfPages = function(filteredItems) {
  return Math.ceil(filteredItems.length / 10);
};

1. Next, update your filter function to include the necessary pagination logic. In addition to filtering the items, this function should also return the subset of items for the current page.

app.filter('customFilter', function() {
  return function(items, searchText, currentPage) {
    var filteredItems = // Your filtering logic goes here
    var startIndex = (currentPage - 1) * 10;
    var endIndex = startIndex + 10;
    return filteredItems.slice(startIndex, endIndex);
  };
});

1. Now, within your AngularJS controller, add a variable to keep track of the current page. Initialize it to 1 initially.

$scope.currentPage = 1;

1. Finally, update your HTML template to display the filtered items based on the current page and include navigation options for previous and next pages.

<!-- Display filtered items -->
<div ng-repeat="item in filteredItems | customFilter:searchText:currentPage">
  <!-- Display item details -->
</div>

<!-- Navigation options -->
<button ng-disabled="currentPage === 1" ng-click="currentPage = currentPage - 1">Previous</button>
<button ng-disabled="currentPage === getNumberOfPages(filteredItems)" ng-click="currentPage = currentPage + 1">Next</button>

📢 Call-to-Action: Take Paging to the Next Level!

Now that you know how to implement paging in AngularJS, it's time to put your newfound knowledge into practice and take your application's user experience to the next level. Implement paging for your large datasets and see how it enhances both performance and usability. 🔥💪

If you enjoyed this guide, share it with your developer friends to help them make their AngularJS applications even more amazing! 📤🙌

Got any questions or suggestions? Feel free to leave a comment below, and let's keep the conversation going. Happy coding! 😄👩‍💻👨‍💻