根据下拉角度的选择更改段落文本
根据下拉角度的选择更改段落文本
提问于 2016-11-16 06:39:42
我试图根据用户从下拉菜单中选择的内容更改信函中的一个段落，我无法让它工作。
我不确定ng-显示/隐藏是该走的路，还是ng-选项是该走的路。我真的迷上了这个。我一整天都在绞尽脑汁。
app.controller('letterCreateCtrl', function($scope) {
$scope.selectItemsFilterCriteria = [
{id: 1, name: "An event that occurred in the past 12 months"},
{id: 2,name: "child/family got a new dog"},
{id: 3, name: "child/family got a new cat"}
];
});<select ng-options="item.name for item in selectItemsFilterCriteria" name="field_event">
<option value="" disabled hidden selected>An event that occurred in the past 12 months</option>
<optgroup label="Pets">
<option value="Pets-1">Child/family got a new dog</option>
<option value="Pets-2">Child/family got a new kitten</option>
<option value="Pets-3">Child/family got a new rabbit</option>
</optgroup>
<optgroup label="Development">
<option value="Development-1">Baby began sitting up on their own</option>
<option value="Development-2">Child learned to walk</option>
<option value="Development-3">Child started to get baby teeth</option>
</optgroup>
</select>
<p>paragraph to change ipsum ipsum</p>
回答 2
Stack Overflow用户
回答已采纳
发布于 2016-11-16 07:10:36
见小提琴- 这里
<div ng-controller="testCtrl">
<select ng-options="item.name for item in selectItemsFilterCriteria" name="field_event" ng-model="paragraphToShow">
</select>
<p>{{paragraphToShow.para}}</p>
</div>Stack Overflow用户
发布于 2016-11-16 07:15:10
我认为你必须看看这个，也许你能找到解决问题的办法。
var app = angular.module('plunker', []);
app.controller('MainCtrl', function($scope) {
$scope.flights = [{
value: 'val1',
text: 'text1'
}, {
value: 'val2',
text: 'text2'
}, {
value: 'val3',
text: 'text3 '
}];
$scope.model = {flight:'val2'};
//this is a default value; if you don't want a default, you can leave this out,
//and it will have a blank initially. otherwise, you can put a blank row and
//handle it in validation
});<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<!DOCTYPE html>
<html ng-app="plunker">
<head>
<meta charset="utf-8" />
<title>AngularJS Plunker</title>
<script>document.write('<base href="' + document.location + '" />');</script>
<link rel="stylesheet" href="style.css" />
<script data-require="angular.js@1.2.x" src="https://code.angularjs.org/1.2.25/angular.js" data-semver="1.2.25"></script>
<script src="app.js"></script>
</head>
<body ng-controller="MainCtrl">
<select name="flightNum" class="form-control" ng-model="model.flight" ng-options="v.value as v.text for v in flights" required></select>
<br/>
<br/>
Selected value (in model.flight):
<div>
<b>{{model.flight}}</b>
</div>
</body>
</html>
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/40625593
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