zoukankan html css js c++ java

ng-options的使用

参考：官方文档、zhx1991

select 无默认选择一项

<select name="" id="" class="form-control" ng-options="item.id for item in optData" ng-model="selected">
  <!-- item.id是label 显示出来的 item是value 选中的数据object -->
  <option value="">---请选择---</option>
</select>

select 有默认选择一项

  $scope.selected=$scope.optData[1];

select其他

//字符拼接
<select name="" id="" class="form-control"
ng-options="(item.id+' '+item.ProductName) for item in optData"
ng-model="selected"></select>
//分组 label group by groupName for value in Array
<select name="" id="" class="form-control"
ng-model="selected" 
ng-options="item.id group by item.MainCategory for item in optData">
</select>
//下面selected的值为optData的id select as label for value in Array
<select name="" id="" class="form-control"
ng-model="selected" 
ng-options="item.id as item.ProductName for item in optData"></select>
//多级列表
<select name="" id="" class="form-control" ng-options="obj.name for obj in people" ng-model="selectedPerson">
</select>
<select name="" id="" class="form-control" ng-model="selectedGenre">
    <option ng-repeat="label in people[selectedPerson.id].interest">{{label}}</option>
</select>

ng-options的内容：

for array data sources:
- labelforvalueinarray
- selectaslabelforvalueinarray
- labelgroup bygroupforvalueinarray
- labeldisable whendisableforvalueinarray
- labelgroup bygroupforvalueinarraytrack bytrackexpr
- labeldisable whendisableforvalueinarraytrack bytrackexpr
- labelforvalueinarray | orderBy:orderexprtrack bytrackexpr(for including a filter with track by)
for object data sources:
- labelfor (key,value) inobject
- selectaslabelfor (key,value) inobject
- labelgroup bygroupfor (key,value) inobject
- labeldisable whendisablefor (key,value) inobject
- selectaslabelgroup bygroupfor(key,value) inobject
- selectaslabeldisable whendisablefor(key,value) inobject

自己的代码：

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
    <link rel="stylesheet" href="http://cdn.static.runoob.com/libs/bootstrap/3.3.7/css/bootstrap.min.css">  
    <script src="http://cdn.static.runoob.com/libs/jquery/2.1.1/jquery.min.js"></script>
    <script src="http://cdn.static.runoob.com/libs/angular.js/1.4.6/angular.min.js"></script>
    <script src="http://cdn.bootcss.com/angular-ui-bootstrap/2.2.0/ui-bootstrap-tpls.js"></script>
    <script src="https://cdn.bootcss.com/angular-i18n/1.5.8/angular-locale_zh-cn.js"></script>
    <script>
        angular.module('m1',['ui.bootstrap'])
        .controller('ngselect',function($scope){
            $scope.optData=[
                {id:10001,MainCategory:'男',ProductName:'水洗T桖',ProductColor:'白'},
                {id:10002,MainCategory:'男',ProductName:'干洗毛衣',ProductColor:'黑'},
                {id:10003,MainCategory:'女',ProductName:'干洗毛衣',ProductColor:'篮'},
                {id:10004,MainCategory:'女',ProductName:'水洗T桖',ProductColor:'红'}
            ]
        })
        .controller('ngselect1',function($scope){
            $scope.optData=[
                {id:10001,MainCategory:'男',ProductName:'水洗T桖',ProductColor:'白'},
                {id:10002,MainCategory:'男',ProductName:'干洗毛衣',ProductColor:'黑'},
                {id:10003,MainCategory:'女',ProductName:'干洗毛衣',ProductColor:'篮'},
                {id:10004,MainCategory:'女',ProductName:'水洗T桖',ProductColor:'红'}
            ];
            $scope.selected=$scope.optData[1];
        })
        .controller('ngselect2',function($scope){
            $scope.optData=[
                {id:10001,MainCategory:'男',ProductName:'水洗T桖',ProductColor:'白'},
                {id:10002,MainCategory:'男',ProductName:'干洗毛衣',ProductColor:'黑'},
                {id:10003,MainCategory:'女',ProductName:'干洗毛衣',ProductColor:'篮'},
                {id:10004,MainCategory:'女',ProductName:'水洗T桖',ProductColor:'红'}
            ];
            $scope.selected=$scope.optData[1].id;
        })
        .controller('ngselect3',function($scope){
            $scope.people = [
                    {
                            id: 0,
                            name: '张三',
                            interest: [
                            '爬山',
                            '游泳',
                            '旅游',
                            '美食'
                        ]
                    },
                    {
                        id: 1,
                        name: '李四',
                        interest: [
                            '音乐',
                            '美食',
                            'Coffee',
                            '看书'
                        ]
                    },
                    {
                        id: 2,
                        name: '王五',
                        interest: [
                            '音乐',
                            '电影',
                            '中国好声音',
                            '爸爸去哪了',
                            '非常静距离'
                        ]
                    },
                    {
                        id: 3,
                        name: '小白',
                        interest: [
                            '游泳',
                            '游戏',
                            '宅家里'
                        ]
                    }
                ];
           
        })
    </script>
</head>
<body ng-app="m1">
    <div class="container">
        <h1>下拉列表</h1>
        <div ng-controller="ngselect">
            <h4>无默认选择 label for value in array</h4>
            <div class="col-xs-6">
                <select name="" id="" class="form-control" ng-options="item.id for item in optData" ng-model="selected">
                    <!-- item.id是label 显示出来的 item是value 选中的数据object -->
                    <option value="">---请选择---</option>
                </select>
            </div>
            <div class="col-xs-6">
                <input type="text" class="form-control" value="{{selected.id+'--'+selected.ProductName+'--'+selected.MainCategory}}"  >
            </div>
            <p class="well">添加一个'option'</p>
        </div>
        <div ng-controller="ngselect1">
            <h4>默认选择一项</h4>
            <div class="col-xs-6"><select name="" id="" class="form-control" ng-options="item.id for item in optData" ng-model="selected"></select></div>
            <div class="col-xs-6"><select name="" id="" class="form-control" ng-options="(item.id+' '+item.ProductName) for item in optData" ng-model="selected"></select></div>
            
            <div class="col-xs-6">
                <select name="" id="" class="form-control" ng-model="selected" ng-options="item.id group by item.MainCategory for item in optData"></select>
            </div>
            
        </div>
        <div ng-controller="ngselect2">
            <div class="col-xs-6">
                <select name="" id="" class="form-control" ng-model="selected" ng-options="item.id as item.ProductName for item in optData"></select>
                <input type="text" ng-model="selected">
            </div>
        </div>
        <div ng-controller="ngselect3">
            <div class="col-xs-3">
                <select name="" id="" class="form-control" ng-options="obj.name for obj in people" ng-model="selectedPerson">
                </select>
            </div>
            <div class="col-xs-3">
                <select name="" id="" class="form-control" ng-model="selectedGenre">
                    <option ng-repeat="label in people[selectedPerson.id].interest">{{label}}</option>
                </select>
            </div>
        </div>
    </div>
</body>
</html>

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原文地址：https://www.cnblogs.com/tonghaolang/p/5972762.html