How to make a preselection for a select list generated by AngularJS?

Solution 1:

Here's what worked:

<select ng-init="team.captain=team.players[0]" 
        ng-model="team.captain" 
        ng-options="player.name for player in team.players"></select>

And what didn't work:

ng-init="team.captain='0'"
ng-init="team.captain='John'"

My guess is that Angular goes beyond simple comparison of values or labels. It probably compares object references.

Solution 2:

Here's an alternate method for initializing a drop down menu using AngularJS.

(working example on JS Fiddle: http://jsfiddle.net/galeroy/100ho18L/1/)

<head>
    <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/angularjs/1.2.26/angular.min.js"></script>
</head>

<body ng-app="" ng-controller="myController">

    <select 
        ng-model="carSelection"
        ng-options = "x.make for x in cars">
    </select>

    <script>

        function myController($scope) {

            $scope.cars = [
                {"make": "Nissan", "model": "Sentra"},
                {"make": "Honda", "model": "Prelude"},
                {"make": "Toyota", "model": "Prius"}
            ]

            $scope.carSelection = $scope.cars[1]; // this line initializes the drop down menu
        }

    </script>

</body>

Solution 3:

As @camus already mentioned in a comment, you need to set the model to a valid "label" value (or reference), not an index value. This is a bit odd since you can see an index value being used in the HTML.

Angular sets the value attributes in the HTML as follows:

when using array as datasource, it will be the index of array element in each iteration;
when using object as datasource, it will be the property name in each iteration.

When an item is selected, Angular looks up the correct entry in the array/object based on the index or property name.

How to make a preselection for a select list generated by AngularJS?

Solution 1:

Solution 2:

Solution 3:

Related

Recent Posts