angularJS实现可编辑的下拉框
将angularJS与插件select2结合使用即可
<!DOCTYPE html>
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<link rel="stylesheet" href="bootstrap.min.css" />
<link rel="stylesheet" href="select2.css" />
<link rel="stylesheet" href="select2-bootstrap.css" />
<script type="text/javascript" src="jquery.1.11.1.js"></script>
<script type="text/javascript" src="angular.1.2.10.min.js"></script>
<script type="text/javascript" src="select2.min.js"></script>
<title>Title</title>
</head>
<body ng-app="demo" ng-controller="app">
<div class="col-sm-offset-2 col-sm-6">
<select select2 ng-model="search" ng-options="a for a in na" style="width:200px"></select>
<select select2 ng-model="search1" ng-options="name['网址'] for name in names track by $index|filter:search" style="width:200px"></select>
<input select2 ng-model="search" select2-model="aS2" config="config1" type="text" class="form-control">
</div>
</body>
<script type="text/javascript">
var app=angular.module("demo",[]);
app.controller('app',['$scope',function($scope){
// $scope.names=["小王","小明","小张","鹏鹏","大叔","张珊","李四"];//select标签的数据可谓对象也可以为数组
$scope.names=[
{"网址" : "Google", url : "a.html"},//当这边是中文时注意使用name['网址']，当不是中文时直接用name.字段名就好即分别为对象的两种取值方式，对象引用时前一种方式更为常见
{"网址" : "Runoob", url : "b.html"},
{"网址" : "Taobao", url : "c.html"}
]
//console.log(typeof $scope.names);
$scope.na=['白','大','李'];
$scope.config1 = {
data: [],
placeholder: '尚无数据'
};
$scope.config1.data = [{id:1,text:'bug'},{id:2,text:'duplicate'},{id:3,text:'invalid'},{id:4,text:'wontfix'}]//用input形式数据的形式必须为中种结构,不然会报错
}])
app.directive('select2', function () {
return {
restrict: 'A',
scope: {
config: '=',
ngModel: '=',
select2Model: '='
},
link: function (scope, element, attrs) {
// 初始化
var tagName = element[0].tagName,
config = {
allowClear: true,
multiple: !!attrs.multiple,
placeholder: attrs.placeholder || ' ' // 修复不出现删除按钮的情况
};
// 生成select
if(tagName === 'SELECT') {
// 初始化
var $element = $(element);
delete config.multiple;
$element
.prepend('<option value="" ng-if="false"></option>')//避免出现空的选项
.val('')
.select2(config);
// model - view
scope.$watch('ngModel', function (newVal) {
setTimeout(function () {
$element.find('[value^="?"]').remove(); // 清除错误的数据
},0);
}, true);
return false;
}
// 处理input
if(tagName === 'INPUT') {
// 初始化
var $element = $(element);
// 获取内置配置
if(attrs.query) {
scope.config = select2Query[attrs.query]();
}
// 动态生成select2
scope.$watch('config', function () {
angular.extend(config, scope.config);
$element.select2('destroy').select2(config);
}, true);
// view - model
$element.on('change', function () {
scope.$apply(function () {
scope.select2Model = $element.select2('data');
});
});
// model - view
scope.$watch('select2Model', function (newVal) {
$element.select2('data', newVal);
}, true);
// model - view
scope.$watch('ngModel', function (newVal) {
// 跳过ajax方式以及多选情况
if(config.ajax || config.multiple) { return false }
// $element.select2('val', newVal);
}, true);
}
}
}
});
//自定义过滤器，可以在过滤中传递多个参数，依次获取
app.filter('myfilter',function(){
return function(input,param){
//console.log(input);
// console.log(param);
var newInput=input.filter(function(item,index){
if(item.indexOf(param)!==-1)
return item;
})
return newInput;
}
})
</script>
</html>
