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Angular make api call with keyup event5/12/2023 ![]() ![]() We can achieve Debounce behaviour in Angular applications using React JS operators. Let’s implement Debounce in the Angular 13 application Like we can add Debounce Time of 1000 milliseconds which resets after every KeyUp event by a user, if the gap of time between KeyUp event exceeds the 1000 ms then we make a subscription or make API call. Let’s do this programmatically… Debounce Timeĭebounce Time is the delay that we can add between event subscriptions. When a user stops typing this time will up, then we can hit a server API call. ![]() But how do we know when a user is done? Well, we can set a time that can reset again after a user hits a key, again when a user hits the key it will reset. Instead of making a server hit on every keyup event, we can allow a user to type a whole meaningful keyword to make a search for. This type of behaviour on search inputs can affect application performance a lot as an API hit will be made on every key event to the server. But in a technical sense if we bind a keyup event on an input search, then on every keyup event an API hit will be made for example if the user types in “car” then three API hits for each character will be made. In a normal practice a user types in the query to get related results in response. Many of the real-world applications have search features that filter data fetched from a server or connected to some third-party API. By using the RxJS library we’ll control server API hits a user makes while communicating with the server limiting the network resources to optimize the client application. This application will fetch remote server responses using a third-party API by using the HttpClientModule of Angular to make HTTP calls. This Angular post is compatible with Angular 4 upto latest versions, Angular 7, Angular 8, Angular 9, Angular 10, Angular 11, Angular 12 and Angular 13 By using the RxJS operators and functions we can minimize the number of API calls made to the server and same time improve the usability of the application by implementing the debounceTime, filter and distinctUntilChanged to bring a magical change in your app. In this Angular 13 tutorial, you will learn how to make the API search calls to a remote server in an optimized way.
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