javascript - Handling no longer needed async data in AngularJS -


here situation: have user spams input on angularjs app, , of course creating kinds of async data calls on backend. problem is, each of these data fetchs come back, user see data change multiple times on screen , data user rested on 1 comes in last that's see.

but can't count on because async means order isn't guaranteed. there possibility data page c arrives before data page b user skipped on without waiting display. now, user sees data page b because returned last think seeing page c. how protect against this?

$http accepts canceller parameter, promise can used cancel previous request. want cancel request when you're make new request. here rudimentary example. note best practices not suggest using $http within controller.

var canceller = $q.defer();   $http.get("/api/movies/slow/2", { timeout: canceller.promise })      .then(function(response){         $scope.movie = response.data;     });   $scope.cancel = function(){     canceller.resolve("user cancelled");   };

read more here: http://odetocode.com/blogs/scott/archive/2014/04/24/canceling-http-requests-in-angularjs.aspx


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