Javascript 限制提前打印结果_Javascript_Angularjs_Twitter Bootstrap_Angular Ui Bootstrap_Bootstrap Typeahead

Javascript 限制提前打印结果

javascript angularjs twitter-bootstrap

Javascript 限制提前打印结果,javascript,angularjs,twitter-bootstrap,angular-ui-bootstrap,bootstrap-typeahead,Javascript,Angularjs,Twitter Bootstrap,Angular Ui Bootstrap,Bootstrap Typeahead,我使用angular ui typeahead指令连接到Google Maps API并检索地址数组。通常，当我需要限制可见结果的数量时，我会执行以下操作： <input typeahead="eye for eye in array | filter:$viewValue | limitTo:10"> JavaScript: $scope.getLocation = function(val) { return $http.get('http://maps.googl

我使用angular ui typeahead指令连接到Google Maps API并检索地址数组。通常，当我需要限制可见结果的数量时，我会执行以下操作：

<input typeahead="eye for eye in array | filter:$viewValue | limitTo:10">

JavaScript:

  $scope.getLocation = function(val) {
    return $http.get('http://maps.googleapis.com/maps/api/geocode/json', {
      params: {
        address: val
      }
    }).then(function(res){
      var addresses = [];
      angular.forEach(res.data.results, function(item){
        addresses.push(item.formatted_address);
      });
      return addresses;
    });
  };

目前我正在做以下工作来解决问题，我只是好奇为什么一个简单的

limito

不起作用

$scope.getLocation = function(val) {
    return $http.get('http://maps.googleapis.com/maps/api/geocode/json', {
      params: {
        address: val
      }
    }).then(function(res){
      var addresses = [];
      var resultNumber = res.data.results.length > 5 ? 5 : res.data.results.length;
      for(var i = 0; i < resultNumber; i++){
        var obj = res.data.results[i];
        var addr = obj.formatted_address;
        addresses.push(addr);
      }
            return addresses;
    });
  };

$scope.getLocation=函数（val）{
返回$http.get（'http://maps.googleapis.com/maps/api/geocode/json', {
参数：{
地址：val
}
}).然后（功能（res）{
var地址=[]；
var resultNumber=res.data.results.length>5？5:res.data.results.length；
对于（变量i=0；i

typeahead似乎不支持承诺。因此，最好将其绑定到一个集合，然后在收到google的响应时更新该集合。你可能会想去Bouncing tough，现在输入的每封信都有一个请求

请注意，您也不再需要该过滤器，因为该过滤器已经由google服务器端完成

非常好的解释！

$scope.getLocation = function(val) {
    return $http.get('http://maps.googleapis.com/maps/api/geocode/json', {
      params: {
        address: val
      }
    }).then(function(res){
      var addresses = [];
      var resultNumber = res.data.results.length > 5 ? 5 : res.data.results.length;
      for(var i = 0; i < resultNumber; i++){
        var obj = res.data.results[i];
        var addr = obj.formatted_address;
        addresses.push(addr);
      }
            return addresses;
    });
  };

var app = angular.module('app',['ui.bootstrap']);

app.controller('Ctrl', ['$scope','$http', function($scope,$http){
  $scope.locations = [];
  $scope.$watch('asyncSelected', function(val) {
    $http.get('http://maps.googleapis.com/maps/api/geocode/json', {
      params: {
        address: val
      }
    }).then(function(res){
      $scope.locations.length = 0;
      angular.forEach(res.data.results, function(item){
        $scope.locations.push(item.formatted_address);
      });
    });
  });

}]);

  <head>
    <link data-require="bootstrap-css@~3.1.1" data-semver="3.2.0" rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css" />
    <script data-require="angular.js@*" data-semver="1.3.0-beta.5" src="https://code.angularjs.org/1.3.0-beta.5/angular.js"></script>
    <script data-require="ui-bootstrap@*" data-semver="0.11.0" src="http://angular-ui.github.io/bootstrap/ui-bootstrap-tpls-0.11.0.min.js"></script>
    <script data-require="jquery@*" data-semver="2.1.1" src="//cdnjs.cloudflare.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
    <script data-require="bootstrap@*" data-semver="3.1.1" src="//netdna.bootstrapcdn.com/bootstrap/3.1.1/js/bootstrap.min.js"></script>
    <link rel="stylesheet" href="style.css" />
    <script src="script.js"></script>
  </head>

  <body ng-app="app" ng-controller="Ctrl">
    <input type="text" ng-model="asyncSelected" placeholder="Address" typeahead="address for address in locations | limitTo:1" typeahead-loading="loadingLocations" class="form-control">
  </body>

</html>