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Examples of advanced usage of drop-down boxes in AngularJS

小云云Original: 2018-01-25 11:06:251459browse

This article mainly introduces the advanced usage of drop-down boxes in AngularJS. It analyzes the traversal, selection, binding, display and other functions of AngularJS drop-down boxes in the form of examples. Friends who need it can refer to it. I hope it can help everyone.

HTML text:

<body ng-app="myApp">
<!-- 对象内部属性遍历：x--key y---value -->
<p ng-controller="myctr01">
{{sites}}<br>
<select ng-model="site" ng-options="x for (x, y) in sites"></select>
选择的网址：<span>{{site}}</span>
</p>
<p ng-controller="myCtrl">
<p>选择一辆车:</p>
<!-- 这里y标识成员元素对象，并且使用该对象的brand属性作为显示文本,select的值与y绑定 -->
<select ng-model="selectedCar" ng-options="y.brand for (x, y) in cars"></select>
<p>你选择的是: {{selectedCar.brand}}</p>
<p>型号为: {{selectedCar.model}}</p>
<p>颜色为: {{selectedCar.color}}</p>
<p>下拉列表中的选项也可以是对象的属性。</p>
</p>

Javascript operation code:

var app = angular.module(&#39;myApp&#39;, []);
app.controller(&#39;myCtrl&#39;, function($scope) {
  //复杂对象
  $scope.cars = {
  car01 : {brand : "Ford", model : "Mustang", color : "red"},
  car02 : {brand : "Fiat", model : "500", color : "white"},
  car03 : {brand : "Volvo", model : "XC90", color : "black"} }
  //简单对象
  $scope.sites = {
      site01 : "Google",
      site02 : "Baidu",
      site03 : "Taobao"
   };
});
app.controller("myctr01",function($scope){
  $scope.sites = {
      site01 : "Google",
      site02 : "Baidu",
      site03 : "Taobao"
  };
});

Effect:

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