AngularJS select with ng-options - angularjs

i'm developing an app that should have a form with select boxes that are populated dinamically with JSON arrays.
My problem is that the controller is correctly executed but the select options are not populated from the controller, there are empty.
This id my code:
<script>
angular.module('ionicApp', [
])
.controller('TimesController', function () {
console.log("JavaScript Function");
var data = <?php echo $json; ?>;
console.log(data);
var result = {
events: [],
events2: [],
events3: [],
schedules: [],
schedules2: [],
schedules3: []
};
var events = data;
//console.log("events");
//console.log(events);
var events2 = data;
var events3 = data;
var dates = [];
var sedi = [];
var professionisti = [];
console.log("qua3");
for (var i = 0; i < events.length; i++) {
if (dates.indexOf(events[i].day) === -1) {
var date = events[i].day;
dates.push(date);
result.events.push({
date: date
});
}
if (sedi.indexOf(events[i].sede) === -1) {
var sede = events[i].sede;
sedi.push(sede);
result.events2.push({
sede: sede
});
}
if (professionisti.indexOf(events[i].professionista) === -1) {
var professionista = events[i].professionista;
professionisti.push(professionista);
result.events3.push({
professionista: professionista
});
}
var a = 0;
var found = false;
while (a < result.schedules2.length) {
if (events[i].sede === result.schedules2[a].sede && events[i].professionista === result.schedules2[a].professionista) {
found = true;
}
a++;
}
if (found == false) {
result.schedules2.push({
sede: events[i].sede,
professionista: events[i].professionista
});
}
var a = 0;
var found = false;
while (a < result.schedules3.length) {
if (events[i].sede === result.schedules3[a].sede && events[i].professionista === result.schedules3[a].professionista && events[i].day === result.schedules3[a].date) {
found = true;
}
a++;
}
if (found == false) {
console.log("OLEE");
result.schedules3.push({
sede: events[i].sede,
professionista: events[i].professionista,
date: events[i].day
});
}
result.schedules.push({
sede: events[i].sede,
professionista: events[i].professionista,
date: events[i].day,
time: events[i].time
//console.log("qua4");
});
}
console.log(result);
})
</script>
<div ng-app="ionicApp" ng-controller="TimesController as ctrl">
<div align="center">
<p style="font-size: 22px;">Inserisci appuntamento</p>
<br>
<div class="list" align="center">
<div class="input-label">
</div>
<select style="width: 75%;" ng-options="event as event.sede for event in ctrl.data.events2" ng-model="ctrl.form.sede">
<option value="" disabled>Seleziona sede</option>
</select>
</div><br>
<div class="list" align="center">
<div class="input-label">
</div>
<select style="width: 75%;" ng-options="schedule as schedule.professionista for schedule in ctrl.data.schedules2| filter: { sede: ctrl.form.sede.sede}" ng-model="ctrl.form.professionista" ng-disabled="!ctrl.form.sede">
<option value="" disabled>Seleziona professionista</option>
</select>
</div><br>
<div class="list" align="center">
<div class="input-label">
</div>
<select style="width: 75%;" ng-options="schedule as schedule.date for schedule in ctrl.data.schedules3| filter: { professionista: ctrl.form.professionista.professionista, sede: ctrl.form.sede.sede}" ng-model="ctrl.form.giorno" ng-disabled="!ctrl.form.professionista">
<option value="" disabled>Seleziona giorno</option>
</select>
</div><br>
<div class="list" align="center">
<div class="input-label">
</div>
<select style="width: 75%;" ng-options="schedule as schedule.time for schedule in ctrl.data.schedules| filter: { date: ctrl.form.giorno.date, professionista: ctrl.form.professionista.professionista, sede: ctrl.form.sede.sede}" ng-model="ctrl.form.ora" ng-disabled="!ctrl.form.giorno">
<option value="" disabled>Seleziona orario</option>
</select>
</div><br>
</div>
</div>
Can someone help me to solve it?
Thank's

angular.module('app', []).controller('MyCtrl', function ($scope) {
$scope.list = [{
id: 27,
name: "loruth water point",
latitude: 4.453488123,
longitude: 35.36021409
}, {
id: 28,
name: "kibish",
latitude: 5.286289986,
longitude: 35.82917452
}, {
id: 30,
name: "Ekalale",
latitude: 4.434588531,
longitude: 35.72135923
}, {
id: 34,
name: "karubangorok",
latitude: 4.506236007,
longitude: 35.4201746
}, {
id: 35,
name: "nakitoe kakumon",
latitude: 4.214576564,
longitude: 35.35912495
}, {
id: 36,
name: "kaikor mission",
latitude: 4.516645656,
longitude: 35.42262991
}];
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="app">
<div ng-controller="MyCtrl">
<h2>List:</h2>
<p>
<select ng-model="selectedItem" ng-options="item.name for item in list">
<option value="">-- choose --</option>
</select>
</p>
<p>
<h2>Selected:</h2>
{{selectedItem.name}}
</p>
</div>
</div>
Check this example once.

Related

Ng-selected not working angular js 1.6.5

I have tried the following code and failed to get the select option working.
HTML:
<select class=" form-control input-sm" ng-model="formCompletionData.myFilter" ng-change="myFilterChange(formCompletionData.myFilter)">
<option value="">--select--</option>
<option ng-repeat="filter in myfilter" ng-selected="filter.isDefault==true" value="{{filter.filtername}}">{{filter.myfiltername}}</option>
</select>
Angular Code:
$scope.formCompletionData={};
This is the json reponse for $scope.myfilter:
so $scope.myfilter looks like this:
[ {
"_id":"598d8d9998ebb08100fdc272",
"createdBy":"58A559634025FD4867EDAB81",
"myfiltername":"Test",
"filtername":"5A30DA2EB2D0FB046899AED3",
"groupname":"",
"status":"",
"isDefault":true,
"customerId":"SMRTsspd" }, {
"_id":"598da8ec98ebfdceb09d9f4c",
"createdBy":"58A559634025FD4867EDAB81",
"myfiltername":"test2",
"filtername":"5A30DA2EB2D0FB046899AED3",
"groupname":"59DDE8584B28AFFC49E47C89",
"status":"0",
"isDefault":false,
"customerId":"SMRTsspd" }, {
"_id":"598da8fd98ebfdceb09d9f4d",
"createdBy":"58A559634025FD4867EDAB81",
"myfiltername":"test66",
"alluser":false,
"filtername":"594CCAB14B289B198AC85360",
"groupname":"5926C668B7A2B94251CA2EC6",
"status":"1",
"isDefault":false,
"customerId":"SMRTsspd" } ]
In my code below, it is working fine.
angular.module("App", [])
.controller("DemoController", function($scope) {
$scope.formCompletionData = {};
$scope.myfilter = [{
"_id":"598d8d9998ebb08100fdc272",
"createdBy":"58A559634025FD4867EDAB81",
"myfiltername":"Test",
"filtername":"5A30DA2EB2D0FB046899AED3",
"groupname":"",
"status":"",
"isDefault":false,
"customerId":"SMRTsspd" }, {
"_id":"598da8ec98ebfdceb09d9f4c",
"createdBy":"58A559634025FD4867EDAB81",
"myfiltername":"test2",
"filtername":"5A30DA2EB2D0FB046899AED3",
"groupname":"59DDE8584B28AFFC49E47C89",
"status":"0",
"isDefault":false,
"customerId":"SMRTsspd" }, {
"_id":"598da8fd98ebfdceb09d9f4d",
"createdBy":"58A559634025FD4867EDAB81",
"myfiltername":"test66",
"alluser":false,
"filtername":"594CCAB14B289B198AC85360",
"groupname":"5926C668B7A2B94251CA2EC6",
"status":"1",
"isDefault":true,
"customerId":"SMRTsspd"}];
$scope.selectFilter = function(filter) {
$scope.formCompletionData.myFilter=filter;
return true;
};
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<body ng-app="App">
<div ng-controller="DemoController">
<select class="form-control input-sm" ng-model="formCompletionData.myFilter" ng-change="myFilterChange(formCompletionData.myFilter)">
<option value="">--select--</option>
<option ng-repeat="filter in myfilter" ng-selected="filter.isDefault==true && selectFilter(filter.filtername)" value="{{filter.filtername}}">{{filter.myfiltername}}</option>
</select>
</div>
</body>

ng-model into ng-repeat Angularjs

I'm asking if is possible to do something as that in angular
<div ng-app="app">
<div ng-controller="mainController">
<ul ng-repeat="movie in movies |searchFilter:Filter.genre | searchFilter:Filter.name |searchFilter:Filter.pic ">
<li>{{movie.name}}</li>
</ul>
<h2>genre</h2>
<div>
<label>Comedy </label><input type="checkbox" ng-model="Filter.genre.Comedy" ng-true-value="Comedy" data-ng-false-value=''/><br/>
</div>
<h2>PIC</h2>
<label>aa</label><input type="checkbox" ng-model="Filter.pic.aa" ng-true-value="ciao" data-ng-false-value=''/><br/>
<h2>Name</h2>
<label>Shrek</label><input type="checkbox" ng-model="Filter.name.Shrek" ng-true-value="The God" data-ng-false-value=''/><br/>
</div>
</div>
i'm creating a checkbox for filter on different fields (size,name,genre)
ill have a list of avaible sizes,names and genres .
The issue is on ng-model and i tried to write it as "Filter.genre.genre.name" or
"Filter["genre"+genre.name]" and also "Filter.genre[genre.name]" but still not work .
the js.file is
var app =angular.module('app', []);
app.controller('mainController', function($scope) {
$scope.movies = [{name:'Shrek', genre:'Comedy',pic:"cc"},
{name:'Die Hard', genre:'Comedy',pic:"aa"},
{name:'The Godfather', genre:'Drama',pic:"ciao"},
{name:'The Godher', genre:'Comedy',pic:"lel"}];
$scope.genres = [{name:"Comedy"},{name:"Action"},{name:"Drama"}];
});
app.filter('searchFilter',function($filter) {
return function(items,searchfilter) {
var isSearchFilterEmpty = true;
//searchfilter darf nicht leer sein
angular.forEach(searchfilter, function(searchstring) {
if(searchstring !=null && searchstring !=""){
isSearchFilterEmpty= false;
}
});
if(!isSearchFilterEmpty){
var result = [];
angular.forEach(items, function(item) {
var isFound = false;
angular.forEach(item, function(term,key) {
if(term != null && !isFound){
term = term.toLowerCase();
angular.forEach(searchfilter, function(searchstring) {
searchstring = searchstring.toLowerCase();
if(searchstring !="" && term.indexOf(searchstring) !=-1 && !isFound){
result.push(item);
isFound = true;
// console.log(key,term);
}
});
}
});
});
return result;
}else{
return items;
}
}
});
if i make 3 different labels for the field Comedy, Action and Drama with ng-models called as
ng-model="Filter.genre.Comedy" ; ng-model="Filter.genre.Action" and ng-model="Filter.genre.Drama"
it work but it doesnt work if i try to write it into ng-repeat . I hope to have been clearer
In this sample i try to handle your question by change the Model of your page.
we have:
list of movies array => $scope.movies = []
dynamic filters array => $scope.genres = [], $scope.years = [] or more
our target:
Create a dynamic filters to search in movies
what we do
$scope.filterHandler = function (key, value) {}
Run when user start searching on input or select, this function help us to create a filter as object by sending key and value which result is {key:value}
$scope.searchTypeHandler = function (type, dependTo) {}
Run when our filters has some array for example genre has genres as dropdown select, this function help us to return the array which depend to the filter.
var app = angular.module("app", []);
app.controller("ctrl", [
"$scope",
function($scope) {
//your options
$scope.movies = [{
name: 'Shrek',
genre: 'Comedy',
year: 2000
},
{
name: 'Die Hard',
genre: 'Action',
year: 2000
},
{
name: 'The Godfather',
genre: 'Drama',
year: 2015
},
{
name: 'The Godher',
genre: 'Comedy',
year: 2017
}
];
$scope.genres = [{
name: "Comedy"
},
{
name: "Action"
},
{
name: "Drama"
}
];
$scope.years = [{
name: 2000
},
{
name: 2015
},
{
name: 2017
}
];
//
$scope.filter = {}
$scope.filterHandler = function(key, value) {
var object = {};
object[key] = value;
$scope.filter["find"] = object;
};
$scope.searchTypeHandler = function(type, dependTo) {
$scope.filter = {};
$scope.filter.searchType = type;
$scope.filter.options = undefined;
if (dependTo != null) {
$scope.filter.options = $scope[dependTo];
}
};
//default
$scope.searchTypeHandler("name");
}
]);
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>
<div class="container" ng-app="app" ng-controller="ctrl">
<div class="page-header">
<div class="row">
<div class="col-lg-12">
<div class="col-lg-6 col-md-6 col-sm-6 col-xs-6">
<h4>Movies</h4>
</div>
<div class="col-lg-6 col-md-6 col-sm-6 col-xs-6 pull-right">
<div class="input-group">
<div class="input-group-btn">
<button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
By {{filter.searchType}}
<span class="caret"></span>
</button>
<ul class="dropdown-menu dropdown-menu-left">
<li><a ng-click="searchTypeHandler('genre', 'genres')">Filter By Genre</a></li>
<li><a ng-click="searchTypeHandler('name', null)">Filter By Name</a></li>
<li><a ng-click="searchTypeHandler('year', 'years')">Filter By Year</a></li>
</ul>
</div>
<input ng-hide="filter.options" type="text" class="form-control" ng-model="filter.query" ng-change="filterHandler(filter.searchType, filter.query)">
<select ng-show="filter.options" class="form-control" ng-model="filter.option" ng-change="filterHandler(filter.searchType, filter.option)" ng-options="option.name as option.name for option in filter.options"></select>
</div>
<!-- /input-group -->
</div>
</div>
</div>
</div>
<ul class="list-group">
<li class="list-group-item" ng-repeat="movie in movies | filter: filter.find">
{{movie.name}} - <label class="label label-info">Ggenre: {{movie.genre}}</label> - <label class="label label-default">Year: {{movie.year}}</label>
</li>
</ul>
</div>

how to make drop-down list dependent using json?

Im trying to create a dependent drop-down list box using json.For example: if the car brand selected is "bmw" then the car model drop-down must display only "suv" from the list and other two options shouldn't be displayed.Likewise for "Mercedes" it should display only "suv" and "coupe" in the car model. And also please explain what is the use of json? also how it effect the code.
my.html
Car Brand:
<select name="carname" ng-model="userSelect" required>
<option value="">--Select--</option>
<span ng-show="valdate.carname.$error.required">Car name</span>
<option ng-repeat="ManufactureBrand in a" ng-bind="ManufactureBrand" >
{{ManufactureBrand}}
</option>
</select>
<br/>
<br/> Car Model:
<select name="carmodel" ng-model="selectCar" required>
<option value="">--Select--</option>
<span ng-show="valdate.carmodel.$error.required">Car name</span>
<option ng-repeat="CarName in b" ng-bind="CarName">
{{CarName}}
</option>
</select>
<br/>
<input type="submit" ng-click="checkselection()" ng-disabled="valdate.carname.$invalid && valdate.carmodel.$invalid">
script.js
app.factory('Brandtest', function () {
var brand = {};
brand.sample = ['Bmw', 'Mercedes', 'Honda'];
brand.car = ['Suv', 'Sedan', 'Cope'];
{
return brand;
}
});
app.controller('selectDropdown', ['$scope', 'Brandtest', function ($scope, Brandtest) {
$scope.a = Brandtest.sample;
$scope.b = Brandtest.car;
$scope.list=[];
$scope.carlist=[];
$scope.checkselection = function () {
if ($scope.userSelect != "" && $scope.userSelect != undefined &&
$scope.selectCar != "" && $scope.selectCar != undefined )
{
$scope.list.push($scope.userSelect);
$scope.carlist.push($scope.selectCar);
}
Thanks in advance.
Here is the working plunkr
You have to modified you code as below
your factory should be like this
app.factory('Brandtest', function () {
var brand = {};
brand.sample =[
{
"id": 0,
"carName": "BMW"
},
{
"id": 1,
"carName": "Mercedes"
},
{
"id": 2,
"carName": "Honda"
}
];
brand.car =[
{
"id": 0,
"carType": "Suv",
"parentId": 0
},
{
"id": 1,
"carType": "Sedan",
"parentId": 1
},
{
"id": 2,
"carType": "Cope",
"parentId": 2
}
];
{
return brand;
}
});
In your HTML modify the code like below
<body ng-controller="selectDropdown">
Car Brand:
<select name="carname" ng-model="userSelect" ng-options="p.carName for p in a" required>
<option value="">--Select--</option>
<span ng-show="valdate.carname.$error.required">Car name</span>
</select>
<br/>
<br/> Car Model:
<select name="carmodel" ng-model="selectCar" ng-options="c.carType for c in b | filter:{parentId: userSelect.id}" required>
<option value="">--Select--</option>
<span ng-show="valdate.carmodel.$error.required">Car name</span>
</select>
<br/>
<input type="submit" ng-click="checkselection()" ng-disabled="valdate.carname.$invalid && valdate.carmodel.$invalid">
<table>
<tr>
<th>Car Name</th>
<th>Car Model</th></tr>
<tr ng-repeat="carz in list track by $index">
<td>{{carz.carName}}</td>
<td>{{carlist[$index].carType}}</td>
</tr>
</table>
</body>
You have to maintain some co-relation between the 2 dropdowns. Better would be to have a single json object and use ng-options for populating the second dropdown based on value selected in first dropdown. Run the demo program below and you will get the point.
<!DOCTYPE html>
<html>
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<body>
<div ng-app="myApp" ng-controller="myCtrl">
<h1>Select a car:</h1>
<select ng-model="x" ng-options="x for (x, y) in cars"></select>
<h1 ng-if="x">Category: </h1>
<select ng-if="x" ng-model="y" ng-options="y for y in x"></select>
</div>
<script>
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
$scope.cars = {
"car01" : ["Ford", "BMW", "NISSAN"],
"car02" : ["Fiat", "Infinity"],
"car03" : ["Volvo", "Toyota"]
}
});
</script>
</body>
</html>

how to search using two criterions( select and input)

i'm new in angular js , and i'm trying to search in a my table , using a selectbox.
I want that my search will be based on two xriterion: ( what i will write on the input item , and on what i will select )
for exemple if i will select ( search by name ) , i should search just based on name:
here is my code :
<div ng-controller="mycontrolleur">
<input type='text' ng-model="searchT">
<select ng-model="choix">
<option value='nom'>search by name</option>
<option value='cin'>search by CIN</option>
</select>
<table border="1">
<tr><td>Nom</td><td>CIN</td></tr>
<tr ng-repeat="x in students|filter:searchT|orderBy:choix">
<td>{{x.nom}} </td><td>{{x.cin}}</td></tr>
</table>
</div>
<script src='angular.min.js'></script>
<script>
var app=angular.module('searchApp',[]);
app.controller('mycontrolleur',function($scope)
{
$scope.students=[{nom:'marwen',cin:11155},
{nom:'mounir',cin:15885},
{nom:'maryem',cin:25155},
{nom:'ahmed',cin:77555},
{nom:'amel',cin:88155}
];
});
</script>
thank you for your help guys :)
You can use a filter like this one :
app.filter('filterByCustomProp', function($filter) {
return function(source, prop, searchValue) {
if (!searchValue) return source;
if (!prop) return $filter('filter')(source, searchValue); //search on name & CIN
return source.filter(function(item) {
return (item[prop].toString().indexOf(searchValue) > -1);
});
};
});
Then you can call :
<tr ng-repeat="x in students|filterByCustomProp:choix:searchT|orderBy:choix">
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="searchApp" ng-controller="mycontrolleur">
<input type='text' ng-model="searchT">
<select ng-model="choix">
<option value='nom'>search by name</option>
<option value='cin'>search by CIN</option>
</select>
<table border="1">
<tr>
<td>Nom</td>
<td>CIN</td>
</tr>
<tr ng-repeat="x in students|filterByCustomProp:choix:searchT|orderBy:choix">
<td>{{x.nom}}</td>
<td>{{x.cin}}</td>
</tr>
</table>
</div>
<script>
var app = angular.module('searchApp', []);
app.filter('filterByCustomProp', function($filter) {
return function(source, prop, searchValue) {
if (!searchValue) return source;
if (!prop) return $filter('filter')(source, searchValue); //search on name & CIN
return source.filter(function(item) {
return (item[prop].toString().indexOf(searchValue) > -1);
});
};
});
app.controller('mycontrolleur', function($scope) {
$scope.students = [{
nom: 'marwen',
cin: 11155
}, {
nom: 'mounir',
cin: 15885
}, {
nom: 'maryem',
cin: 25155
}, {
nom: 'ahmed',
cin: 77555
}, {
nom: 'amel',
cin: 88155
}];
});
</script>
Hello you can use filter by object. For example:
ng-repeat="client in clients | filter: {name: 'Brett', designation: '1'}"

How to filter first letter in a button using AngularJS

How to make the button functional, and the button has default value, for example button A-B has a range for a to b of first letter to be filter. Thanks, Sorry for my last post, it was hard to understand. =)
var app = angular.module('app', []);
app.filter('startsWithLetter', function () {
return function (items, letter) {
var filtered = [];
var letterMatch = new RegExp(letter, 'i');
for (var i = 0; i < items.length; i++) {
var item = items[i];
if (letterMatch.test(item.name.substring(0, 1))) {
filtered.push(item);
}
}
return filtered;
};
});
app.controller('PersonCtrl', function () {
this.friends = [{
name: 'Andrew'
}, {
name: 'Baldo'
}, {
name: 'Carlo'
}, {
name: 'Delo'
}, {
name: 'Emman'
}, {
name: 'Ferman'
}];
});
</style>
<script src="//code.angularjs.org/1.3.0-beta.7/angular.js"></script>
<style>
<div ng-app="app">
<div ng-controller="PersonCtrl as person">
<input type="text" ng-model="letter" placeholder="Enter a letter to filter">
<button>A-B</button>
<button>C-D</button>
<button>E-F</button>
<ul>
<li ng-repeat="friend in person.friends | startsWithLetter:letter">
{{ friend }}
</li>
</ul>
</div>
</div>
Is this what you meant? Did you want clicking each button to filter by those 2 letters?
All I changed was set the markup for the buttons to be:
<button ng-click="letter='[AB]'">A-B</button>
<button ng-click="letter='[CD]'">C-D</button>
<button ng-click="letter='[EF]'">E-F</button>
var app = angular.module('app', []);
app.filter('startsWithLetter', function () {
return function (items, letter) {
var filtered = [];
var letterMatch = new RegExp(letter, 'i');
for (var i = 0; i < items.length; i++) {
var item = items[i];
if (letterMatch.test(item.name.substring(0, 1))) {
filtered.push(item);
}
}
return filtered;
};
});
app.controller('PersonCtrl', function () {
this.friends = [{
name: 'Andrew'
}, {
name: 'Baldo'
}, {
name: 'Carlo'
}, {
name: 'Delo'
}, {
name: 'Emman'
}, {
name: 'Ferman'
}];
});
</style>
<script src="//code.angularjs.org/1.3.0-beta.7/angular.js"></script>
<style>
<div ng-app="app">
<div ng-controller="PersonCtrl as person">
<input type="text" ng-model="letter" placeholder="Enter a letter to filter">
<button ng-click="letter='[AB]'">A-B</button>
<button ng-click="letter='[CD]'">C-D</button>
<button ng-click="letter='[EF]'">E-F</button>
<ul>
<li ng-repeat="friend in person.friends | startsWithLetter:letter">
{{ friend }}
</li>
</ul>
</div>
</div>

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