angularjs - Predefined model value and ng-options later binding -


i have issue angular.js v1.3.11 , ng-options directive. problem next. have model value know ahead data binding of options comes in ajax request later , angular.js produces 2 selected options: value , first one.

html

  <body ng-controller="mainctrl">       <select ng-model="selectedyear" ng-options="o.year o.year o in options"></select>   </body>

javascript

var app = angular.module('plunker', []);  app.controller('mainctrl', function($scope, $timeout) {     $scope.selectedyear = 2013;     $scope.options = [];      $timeout(function() {         $scope.options = [{year: 2012}, {year: 2013}, {year: 2014}];     }); });

output

<select ng-model="selectedyear" ng-options="o.year o.year o in options" class="ng-pristine ng-valid ng-touched">    <option value="0" selected="selected" label="2012">2012</option>    <option value="1" selected="selected" label="2013">2013</option>    <option value="2" label="2014">2014</option> </select>

plunker http://plnkr.co/edit/gfz8z7t5dhdpvk4g9teu?p=preview

if use "track by" can leave $scope.selectedyear outside $timeout callback function. shouldn't worry selected attribute. change code include "track o.year" , remove "select as" part:

<select ng-model="selectedyear" ng-options="o.year o in options track o.year"></select>

also in controller can set predefined selectedyear below object.

$scope.selectedyear = {year: 2013};

here working plnkr: http://plnkr.co/edit/umfeiwlbwbnyj9wq1fex?p=preview


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