Ng 在 select 中的 Option 中选择不 select

Question

即使比较正确，Ng-Selected 也没有选择正确的选项。我可以在输出中看到比较工作正常。

我的实际问题是，即使在比较成功之后（与其他 Int 和字符串比较 returns false 的问题不同）。为什么不选择该选项。

我无法将选项用于其他目的。其次，在复制到代码段时出现了一些错误。这就是它不起作用的原因。

var app = angular.module("app", []);
app.controller("HelloController", function($scope) {

  $scope.data = {
    ExpertiseId: null,
    userExperties = [{
      id: 1,
      ExpertyTitle: "Human Resource"
    }, {
      id: 2,
      ExpertyTitle: "Account & Finance"
    }, {
      id: 3,
      ExpertyTitle: "Information Technology"
    }, {
      id: 4,
      ExpertyTitle: "Business Management"
    }];
  }
});

<!DOCTYPE html>
<html lang="en">

<head>
  <title>AngularJS</title>

</head>

<body ng-app="app">
  <select name="ChooseExpertise" id="ChooseExpertise" class="form-control" ng-model="newAdmin.ExpertiseId" required>
    <option style="display:none" value="">CHOOSE_EXPERTISE</option> 
    <option ng-selected="{{option.id.toString() == data.ExpertiseId.toString()}}" value="{{option.id.toString()}}" ng-repeat="option in data.userExperties">{{option.id.toString()==data.ExpertiseId.toString()}}---{{option.ExpertyTitle}}</option>
  </select>
</body>

</html>

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.18/angular.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

谢谢 :) 请帮助

Answer 1

您的代码中有几个错误。

对象表示法错误
而且你没用过 ng-controller
将脚本文件放在 html 标签之外。
另外 ng-selected 语法错误

我更正了它们并更新了代码段。

var app = angular.module("app", []);
app.controller("HelloController", function($scope) {

  $scope.data = {
    ExpertiseId: 2,
    userExperties : [{
      id: 1,
      ExpertyTitle: "Human Resource"
    }, {
      id: 2,
      ExpertyTitle: "Account & Finance"
    }, {
      id: 3,
      ExpertyTitle: "Information Technology"
    }, {
      id: 4,
      ExpertyTitle: "Business Management"
    }]
  }
});

<!DOCTYPE html>
<html lang="en">

<head>
  <title>AngularJS</title>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.18/angular.min.js"></script>
</head>

<body ng-app="app" >
<div ng-controller="HelloController">
  <select name="ChooseExpertise" id="ChooseExpertise" class="form-control" ng-model="newAdmin.ExpertiseId" required>
    <option  ng-selected="option.id === data.ExpertiseId" ng-repeat="option in data.userExperties" value="{{option.id}}">{{option.id}}</option>
  </select>
  </div>
</body>


<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
</html>

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