Javascript 如何在使用ng选项创建的html下拉列表中设置默认值
我正在开发一个单页web应用程序，其中表单输入生成一个结果表，我从一个json数组中填充该表，该数组在表单的提交函数（用angular controller编写）中从后端spring控制器接收 现在，我的表有两列：发布位置和日期。release_location是包含国家的下拉列表，date是与特定国家相对应的发布日期。我已经发展到下拉列表显示国家作为选项，当选择任何国家时，相应的日期填充在日期列中。我的要求是将第一个选项显示为默认值，并在日期列的单元格中填充该选项的相应日期。看看我的代码 HTML:Javascript 如何在使用ng选项创建的html下拉列表中设置默认值,javascript,angularjs,angularjs-scope,angularjs-ng-repeat,ng-options,Javascript,Angularjs,Angularjs Scope,Angularjs Ng Repeat,Ng Options,我正在开发一个单页web应用程序，其中表单输入生成一个结果表，我从一个json数组中填充该表，该数组在表单的提交函数（用angular controller编写）中从后端spring控制器接收 现在，我的表有两列：发布位置和日期。release_location是包含国家的下拉列表，date是与特定国家相对应的发布日期。我已经发展到下拉列表显示国家作为选项，当选择任何国家时，相应的日期填充在日期列中。我的要求是将第一个选项显示为默认值，并在日期列的单元格中填充该选项的相应日期。看看我的代码 HT
<body data-ng-app="searchisbn" data-ng-controller="isbnCtrl">
<!-- This button emulates the submit button of my actual form and initializes the json
array which my backend actually send to angular" -->
<button class="btn btn-primary btn-md" data-ng-click="createData()">Create Test Data</button>
<div>
<table id="isbnTable"
class="table table-hovser table-bordered table-striped table-responsive">
<thead class="thead-inverse text-center">
<tr>
<th>ISBN 10</th>
<th>Release Location</th>
<th>Release Date</th>
</tr>
<tr>
<td><input class="w-100" data-ng-model="f.isbn10"
placeholder="Search Isbn10"></td>
<td><input class="w-100"
data-ng-model="f.releaseData"
placeholder="Search By Release Location" disabled></td>
<td><input class="w-100"
data-ng-model="f.releaseData"
placeholder="Search By Release Date" disabled></td>
</tr>
</thead>
<tbody>
<tr data-ng-repeat="isbn in isbns | filter:f">
<td>{{isbn.isbn10}}</td>
<td><select class="w-100" name="isbnDateSelect"
id="isbnDateSelect"
data-ng-options="releaseInstance.releaseLocation for releaseInstance in isbn.releaseData"
data-ng-model="item"></select></td>
<td>{{item.releaseDate}}</td>
<!-- <td data-ng-if='!item.map.releaseDate.length'><div data-ng-repeat = "releaseDetail in isbn.map.releaseData.myArrayList"><p data-ng-if="releaseDetail.map.releaseLocation==='NY'">{{releaseDetail.map.releaseDate}}</p></div></td> -->
</tr>
</tbody>
</table>
</div>
<script data-require="jquery@*" data-semver="3.2.1"
src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script data-require="angular.js@*" data-semver="1.6.5"
src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.6.5/angular.min.js"
type="text/javascript"></script>
<script
src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.11.0/umd/popper.min.js"></script>
<script
src="https://cdnjs.cloudflare.com/ajax/libs/tether/1.3.9/js/tether.min.js"></script>
<script
src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/js/bootstrap.min.js"></script>
<script src="https://use.fontawesome.com/3de3deee4d.js"></script>
<script src="script.js"></script>
</body>
<td>
<select class="w-100" name="isbnDateSelect" id="isbnDateSelect"
data-ng-options="releaseInstance.releaseLocation for releaseInstance in isbn.releaseData"
data-ng-model="item" ng-init="item=isbn.releaseData[0];"></select>
</td>
非常感谢您提供的任何帮助。如果您添加
ng init <body data-ng-app="searchisbn" data-ng-controller="isbnCtrl">
<!-- This button emulates the submit button of my actual form and initializes the json
array which my backend actually send to angular" -->
<button class="btn btn-primary btn-md" data-ng-click="createData()">Create Test Data</button>
<div>
<table id="isbnTable"
class="table table-hovser table-bordered table-striped table-responsive">
<thead class="thead-inverse text-center">
<tr>
<th>ISBN 10</th>
<th>Release Location</th>
<th>Release Date</th>
</tr>
<tr>
<td><input class="w-100" data-ng-model="f.isbn10"
placeholder="Search Isbn10"></td>
<td><input class="w-100"
data-ng-model="f.releaseData"
placeholder="Search By Release Location" disabled></td>
<td><input class="w-100"
data-ng-model="f.releaseData"
placeholder="Search By Release Date" disabled></td>
</tr>
</thead>
<tbody>
<tr data-ng-repeat="isbn in isbns | filter:f">
<td>{{isbn.isbn10}}</td>
<td><select class="w-100" name="isbnDateSelect"
id="isbnDateSelect"
data-ng-options="releaseInstance.releaseLocation for releaseInstance in isbn.releaseData"
data-ng-model="item"></select></td>
<td>{{item.releaseDate}}</td>
<!-- <td data-ng-if='!item.map.releaseDate.length'><div data-ng-repeat = "releaseDetail in isbn.map.releaseData.myArrayList"><p data-ng-if="releaseDetail.map.releaseLocation==='NY'">{{releaseDetail.map.releaseDate}}</p></div></td> -->
</tr>
</tbody>
</table>
</div>
<script data-require="jquery@*" data-semver="3.2.1"
src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script data-require="angular.js@*" data-semver="1.6.5"
src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.6.5/angular.min.js"
type="text/javascript"></script>
<script
src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.11.0/umd/popper.min.js"></script>
<script
src="https://cdnjs.cloudflare.com/ajax/libs/tether/1.3.9/js/tether.min.js"></script>
<script
src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/js/bootstrap.min.js"></script>
<script src="https://use.fontawesome.com/3de3deee4d.js"></script>
<script src="script.js"></script>
</body>
<td>
<select class="w-100" name="isbnDateSelect" id="isbnDateSelect"
data-ng-options="releaseInstance.releaseLocation for releaseInstance in isbn.releaseData"
data-ng-model="item" ng-init="item=isbn.releaseData[0];"></select>
</td>