AngularJS Example:

HTML

<link rel="stylesheet" href="http://twitter.github.com/bootstrap/assets/css/bootstrap.css">
<div ng-app>
  <div ng-controller="DemoCtrl">
      <select ng-model="customerId" ng-options="item.id as item.name for item in content" ng-change="customerName = item.name">
</select>
      <br/>
      <input disabled="disabled" type="text" ng-model="customerId"/>
      <input disabled="disabled" type="text" ng-model="customerName"/>
  </div>
</div>

JavaScript

function DemoCtrl($scope) {
  $scope.content = [
    {
        name: "Bireysel",
        id: 1
    },
    {
        name: "Kurumsal",
        id: 2
    },
    {
        name: "Bireysel & Kurumsal",
        id: 3
    }];
    
}