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Bunch of useful filters for AngularJS (with no external dependencies!)

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#Angular-filter   NPM version Build status Test coverage License

Bunch of useful filters for AngularJS (with no external dependencies!), v0.5.8

Notice: if you want to use angular-filter out of AngularJS(e.g: Node, etc..), check Agile.js repo

##Table of contents:

#Get Started (1) You can install angular-filter using 4 different methods:

(2) Include angular-filter.js (or angular-filter.min.js) in your index.html, after including Angular itself.

(3) Add 'angular.filter' to your main module's list of dependencies.

When you're done, your setup should look similar to the following:

<!doctype html>
<html ng-app="myApp">
<head>

</head>
<body>
    ...
    <script src="//cdnjs.cloudflare.com/ajax/libs/angular.js/1.3.0/angular.min.js"></script>
    <script src="bower_components/angular-filter/dist/angular-filter.min.js"></script>
    ...
    <script>
        var myApp = angular.module('myApp', ['angular.filter']);

    </script>
    ...
</body>
</html>

#Collection

###concat

Concatenates an array/object into another one.

function MainController ($scope) {
  $scope.array = [ {a: 1}, {a: 2} ];
  $scope.object = {
    0: {a: 3},
    1: {a: 4}
  };
}
<li ng-repeat="elm in array | concat:object">
  {{ elm.a }}
</li>

<!--
result:
1 2 3 4
-->

<li ng-repeat="elm in object | concat:array">
  {{ elm.a }}
</li>

<!--
result:
3 4 1 2
-->

###unique Remove duplicates from an array/object.
If a string is provided, it will filter out duplicates using the provided expression.
Usage: collection | unique: 'property'
aliases: uniq

function MainController ($scope) {
  $scope.orders = [
    { id:1, customer: { name: 'John', id: 10 } },
    { id:2, customer: { name: 'William', id: 20 } },
    { id:3, customer: { name: 'John', id: 10 } },
    { id:4, customer: { name: 'William', id: 20 } },
    { id:5, customer: { name: 'Clive', id: 30 } }
  ];
}

Ex: Filter by customer.id

<th>Customer list:</th>
<tr ng-repeat="order in orders | unique: 'customer.id'" >
   <td> {{ order.customer.name }} , {{ order.customer.id }} </td>
</tr>

<!-- result:
All customers list:
John 10
William 20
Clive 30

###filterBy Filter a collection by a specific property.
Usage: collection | filterBy: [prop, nested.prop, etc..]: search: strict[optional]
Note: You can even use compound properties (e.g: |filterBy: [property + property]: model)

$scope.users = [
  { id: 1, user: { first_name: 'Rob', last_name: 'John',  mobile: 4444 } },
  { id: 2, user: { first_name: 'John', last_name: 'Wayne',  mobile: 3333 } },
  { id: 3, user: { first_name: 'Rob', last_name: 'Johansson',  mobile: 2222 } },
  { id: 4, user: { first_name: 'Mike', last_name: 'Terry',  mobile: 1111 } }
];

Return users whose id is 1

<!--search only by id -->
<th ng-repeat="user in users | filterBy: ['id']: 1">
  {{ user.id }} : {{ user.first_name }} {{ user.last_name }}
</th>
<!--result:
  1: Rob John
-->

Return users whose first name or last name is 'John' (uses nested properties).

<!--search by first_name and last_name -->
<th ng-repeat="user in users | filterBy: ['user.first_name', 'user.last_name']: 'John'">
  {{ user.first_name }} {{ user.last_name }}
</th>
<!--result:
  1: Rob John
  2: John Wayne
-->

Return users whose full name is

<!--search by full name -->
<th ng-repeat="user in users | filterBy: ['user.first_name + user.last_name']: 'Rob Joh'">
  {{ user.id }}: {{ user.first_name }} {{ user.last_name }}
</th>
<!--result:
  1: Rob John
  3: Rob Johannson
-->

###first Gets the first element(s) of a collection.
If an expression is provided, it will only return elements whose expression is truthy.
Usage: See below 

$scope.users = [
  { id: 1, name: { first: 'John', last: 'Wayne' } },
  { id: 2, name: { first: 'Mike', last: 'Johannson' } },
  { id: 3, name: { first: 'William', last: 'Kyle' } },
  { id: 4, name: { first: 'Rob', last: 'Thomas' } }
];

Returns the first user.

{{ users | first }}
<!--result:
{ id: 1, name: { first: 'John', last: 'Wayne' } }
-->

Returns the first user whose first name is 'Rob' and last name is 'Thomas'

<!-- collection | first: expression -->
{{ users | first: 'name.first === \'Rob\' && name.last === \'Thomas\'' }}
<!--result:
[ { id: 4, name: { first: 'Rob', last: 'Thomas' } } ]
-->

Return the first two users

<!-- collection | first: n -->
<th ng-repeat="user in users | first: 2">
  {{ user.name.first }}
</th>
<!--result:
John
Mike
-->

Return the first two users with even id

<!-- collection | first: n: expression -->
<th ng-repeat="user in users | first: 2: '!(id%2)'">
  {{ user.name }}
</th>
<!--result:
Mike
Rob

###last Gets the last element or last n elements of a collection,
if expression is provided, is returns as long the expression return truthy
Usage: See below 

$scope.users = [
  { id: 1, name: { first: 'foo', last: 'bar' } },
  { id: 2, name: { first: 'baz', last: 'bar' } },
  { id: 3, name: { first: 'bar', last: 'bar' } },
  { id: 4, name: { first: 'lol', last: 'bar' } }
];
{{ users | last }}
<!--result:
{ id: 4, name: { first: 'lol', last: 'bar' } }
<!-- collection | last: expression -->
{{ users | last: 'name.last === \'bar\'' }}
<!--result:
[ { id: 4, name: { first: 'lol', last: 'bar' } } ]
<!-- collection | last: n -->
<th ng-repeat="user in users | last: 2">
  {{ user.name }}
</th>
<!--result:
bar
lol
<!-- collection | last: n: expression -->
<th ng-repeat="user in users | last: 2: '!(id%2)'">
  {{ user.name }}
</th>
<!--result:
baz
lol

###flatten Flattens a nested array (the nesting can be to any depth).
If you pass shallow, the array will only be flattened a single level
Usage: collection | flatten: shallow[optional]

$scope.weirdArray = [[], 1, 2, 3, [4, 5, 6, [7, 8, 9, [10, 11, [12, [[[[[13], [[[[14, 15]]]]]]]]]]]]];
<th ng-repeat="elm in wierdArray | flatten">
 {{ elm }},
</th>
<!--result:
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15

join

Joins the contents of a collection into a string.
By default, it will join elements with a single space, but you can provide your own delimiter.

Usage: collection | join:', '

Example:

$scope.names = ['John', 'Sebastian', 'Will', 'James'];
<p>{{ names | join:', ' }}</p>
<!-- Will print "John, Sebastian, Will, James" -->

###fuzzy fuzzy string searching(approximate string matching). Read more
note: use fuzzyBy to filter by one property to improve performance
Usage: collection | fuzzy: search: caseSensitive[optional]

$scope.books = [
  { title: 'The DaVinci Code', author: 'F. Scott Fitzgerald' },
  { title: 'The Great Gatsby', author: 'Dan Browns' },
  { title: 'Angels & Demons',  author: 'Dan Louis' },
  { title: 'The Lost Symbol',  author: 'David Maine' },
  { title: 'Old Man\'s War',   author: 'Rob Grant' }
];
<input type="text" ng-model="search" placeholder="search book" />
<li ng-repeat="book in books | fuzzy: search">
  {{ book.title }}
</li>
<!--case sensitive-->
<li ng-repeat="book in books | fuzzy: search: true">
  {{ book.title }}
</li>

###fuzzyBy fuzzy string searching(approximate string matching) by property(nested to). Read more
Usage: collection | fuzzyBy: 'property': search: caseSensitive[optional]

$scope.books = [
  { title: 'The DaVinci Code' },
  { title: 'The Great Gatsby' },
  { title: 'Angels & Demons'  },
  { title: 'The Lost Symbol'  },
  { title: 'Old Man\'s War'   }
];
<input type="text" ng-model="search" placeholder="search by title" />
<li ng-repeat="book in books | fuzzyBy: 'title': search">
  {{ book.title }}
</li>
<!--case sensitive-->
<li ng-repeat="book in books | fuzzyBy: 'title': search: true">
  {{ book.title }}
</li>

###groupBy Create an object composed of keys generated from the result of running each element of a collection,
each key is an array of the elements.
Usage: (key, value) in collection | groupBy: 'property' or ... | groupBy: 'nested.property'

$scope.players = [
  {name: 'Gene', team: 'alpha'},
  {name: 'George', team: 'beta'},
  {name: 'Steve', team: 'gamma'},
  {name: 'Paula', team: 'beta'},
  {name: 'Scruath', team: 'gamma'}
];
<ul>
  <li ng-repeat="(key, value) in players | groupBy: 'team'">
    Group name: {{ key }}
    <ul>
      <li ng-repeat="player in value">
        player: {{ player.name }}
      </li>
    </ul>
  </li>
</ul>
<!-- result:
  Group name: alpha
    * player: Gene
  Group name: beta
    * player: George
    * player: Paula
  Group name: gamma
    * player: Steve
    * player: Scruath

###countBy Create an object composed of keys generated from the result of running each element of a collection,
each key is the count of objects in each group
Usage: (key, value) in collection | countBy: 'property' or ... | countBy: 'nested.property'

$scope.players = [
  {name: 'Gene', team: 'alpha'},
  {name: 'George', team: 'beta'},
  {name: 'Steve', team: 'gamma'},
  {name: 'Paula', team: 'beta'},
  {name: 'Scruath', team: 'gamma'}
];
<li ng-repeat="(key, value) in players | countBy: 'team'" >
  Group name: {{ key }}, length: {{ value }}
</li>
<!-- result:
  Group name: alpha, length: 1
  Group name: beta, length: 2
  Group name: gamma, length: 2

###chunkBy Collect data into fixed-length chunks or blocks
Usage: (key, value) in collection | chunkBy: 'n': fill-value(optional)

$scope.array = [1, 2, 3, 4, 5, 6];
<li ng-repeat="block in array | chunkBy: 2" >
  Block: {{ block }}
</li>
<!-- result:
  Block: [1, 2]
  Block: [3, 4]
  Block: [5, 6]
-->
<-- Example with fill value -->
<li ng-repeat="block in array | chunkBy: 4: 0" >
  Block: {{ block }}
</li>
<!-- result:
  Block: [1, 2, 3, 4]
  Block: [5, 6, 0, 0]

###defaults defaultsFilter allows to specify a default fallback value for properties that resolve to undefined.
Usage: col in collection | defaults: fallback

$scope.orders = [
      { id:1, destination: { zip: 21908 }, name: 'Ariel M' },
      { id:2, name: 'John F' },
      { id:3, destination: { zip: 45841 } },
      { id:4, destination: { zip: 78612 }, name: 'Danno L' },
  ];
$scope.fallback = {
      name: 'Customer name not available',
      destination: { zip: 'Pickup' }
  };
<li ng-repeat="order in orders | defaults: fallback">
    <b>id:</b> {{ order.id }},
    <b>name:</b> {{ order.name }},
    <b>shipping address:</b> {{ order.destination.zip }}
</li>
<!--Results:
* id: 1, name: Ariel M, shipping address: 21908
* id: 2, name: John F, shipping address: Pickup
* id: 3, name: Customer name not available, shipping address: 45841
* id: 4, name: Danno L, shipping address: 78612

Note: defaultsFilter change the source object.
Why? if we not change the source object, it's actually means we gonna return new object(copy operation) each digest cycle.
And it will cause adverse memory and performance implications.
How to avoid it? see below

//We copy it once, and it's really cheaper
$scope.ordersWithFallback = angular.copy($scope.orders);
<li ng-repeat="order in ordersWithFallback | defaults: fallback">
    <!-- ..... -->
</li>

###where comparison for each element in a collection to the given properties object,
returning an array of all elements that have equivalent property values.

  $scope.collection = [
    { id: 1, name: 'foo' },
    { id: 1, name: 'bar' },
    { id: 2, name: 'baz' }
  ]
<tr ng-repeat="obj in collection | where:{id: 1}">
  {{ obj.name }}
</tr>
<!-- result:
  foo
  bar
-->

<tr ng-repeat="obj in collection | where:{id: 1, name: 'foo'}">
  {{ obj.name }}
</tr>
<!-- result:
  foo
  -->

###omit return collection without the omitted objects(by expression).
usage: collection | omit: expression
example 1:

$scope.mod2 = function(elm) {
  return !(elm % 2);
}
<tr ng-repeat="num in [1,2,3,4,5,6] | omit: mod2">
  {{ num }},
</tr>
<!--result
1, 3, 5

example 2:

$scope.collection = [
  { id: 1, user: { name: 'foo' } },
  { id: 2, user: { name: 'bar' } },
  { id: 3, user: { name: 'baz' } }
]
<tr ng-repeat="obj in collection | omit:'id > 1 && user.name.indexOf(\'b\') !== -1'">
  id: {{ obj.id }}, name: {{ obj.user.name }}
</tr>
<!--result:
id: 1, name: foo

###pick return collection composed of the picked objects(by expression).
usage: collection | pick: expression
example 1:

$scope.mod2 = function(elm) {
  return !(elm % 2);
}
<tr ng-repeat="num in [1,2,3,4,5,6] | pick: mod2">
  {{ num }},
</tr>
<!--result
2, 4, 6

example 2:

$scope.collection = [
  { id: 1, user: { name: 'foo' } },
  { id: 2, user: { name: 'bar' } },
  { id: 3, user: { name: 'baz' } }
]
<tr ng-repeat="obj in collection | pick:'id > 1 && user.name.indexOf(\'b\') !== -1'">
  id: {{ obj.id }}, name: {{ obj.user.name }}
</tr>
<!--result:
id: 2, name: bar
id:3, name: baz

###remove Returns a new collection of removed elements.

$scope.foo = { name: 'foo' };
$scope.collection = [
  { name: 'bar' },
  $scope.foo,
  null, 1
];
<tr ng-repeat="obj in collection | remove: foo: null: 1">
  {{ obj }}
</tr>
<!-- result:
  { "name": "bar" }

###removeWith comparison for each element in a collection to the given properties object,
returning an array without all elements that have equivalent property values.

  $scope.collection = [
    { id: 1, name: 'foo' },
    { id: 1, name: 'bar' },
    { id: 2, name: 'baz' }
  ]
<tr ng-repeat="obj in collection | removeWith:{ id: 1 }">
  {{ obj.name }}
</tr>
<!-- result:
  baz
-->

<tr ng-repeat="obj in collection | removeWith:{ id: 1, name: 'foo' }">
  {{ obj.name }}
</tr>
<!-- result:
  bar
  baz

###searchField if you want to use the filter in angular and want to filter for multiple values
so searchField filter return new collection with property called searchField
support nested properties with dot notation i.e: collection | searchField: 'prop': 'nested.prop'

$scope.users = [
  { first_name: 'Sharon', last_name: 'Melendez' },
  { first_name: 'Edmundo', last_name: 'Hepler' },
  { first_name: 'Marsha', last_name: 'Letourneau' }
];
<input ng-model="search" placeholder="search by full name"/>
<th ng-repeat="user in users | searchField: 'first_name': 'last_name' | filter: search">
  {{ user.first_name }} {{ user.last_name }}
</th>
<!-- so now you can search by full name -->

###after get a collection(array or object) and specified count, and returns all of the items in the collection after the specified count.

$scope.collection = [
    { name: 'foo' },
    { name: 'bar' },
    { name: 'baz' },
    { name: 'zap' },
  ];
<tr ng-repeat="col in collection | after:2">
  {{ col.name }}
</tr>
<!--result:
  baz
  zap
-->

###afterWhere get a collection and properties object, and returns all of the items, in the collection after the first that found with the given properties, including it.

$scope.orders = [
  { id: 1, customer: { name: 'foo' }, date: 'Tue Jul 15 2014' },
  { id: 2, customer: { name: 'foo' }, date: 'Tue Jul 16 2014' },
  { id: 3, customer: { name: 'foo' }, date: 'Tue Jul 17 2014' },
  { id: 4, customer: { name: 'foo' }, date: 'Tue Jul 18 2014' },
  { id: 5, customer: { name: 'foo' }, date: 'Tue Jul 19 2014' }
];
<tr ng-repeat="order in orders | afterWhere:{ date: 'Tue Jul 17 2014' }">
  order: {{ order.id }}, {{ order.date }}
</tr>
<!--result:
  order: 3, Tue Jul 17 2014
  order: 4, Tue Jul 18 2014
  order: 5, Tue Jul 19 2014
-->

###before get a collection(array or object) and specified count, and returns all of the items in the collection before the specified count.

$scope.collection = [
    { name: 'foo' },
    { name: 'bar' },
    { name: 'baz' },
    { name: 'zap' },
  ];
<tr ng-repeat="col in collection | before:3">
  {{ col.name }}
</tr>
<!--result:
  foo
  bar
-->

###beforeWhere get a collection and properties object, and returns all of the items, in the collection before the first that found with the given properties, including it.

$scope.orders = [
  { id: 1, customer: { name: 'foo' }, date: 'Tue Jul 15 2014' },
  { id: 2, customer: { name: 'foo' }, date: 'Tue Jul 16 2014' },
  { id: 3, customer: { name: 'foo' }, date: 'Tue Jul 17 2014' },
  { id: 4, customer: { name: 'foo' }, date: 'Tue Jul 18 2014' },
  { id: 5, customer: { name: 'foo' }, date: 'Tue Jul 19 2014' }
];
<tr ng-repeat="order in orders | beforeWhere:{ date: 'Tue Jul 17 2014' }">
  order: {{ order.id }}, {{ order.date }}
</tr>
<!--result:
  order: 1, Tue Jul 15 2014
  order: 2, Tue Jul 16 2014
  order: 3, Tue Jul 17 2014
-->

###reverse Reverse the order of the elements in a collection

$scope.users = [
  { id: 1, name: 'bazzy' },
  { id: 2, name: 'dazzy' },
  { id: 3, name: 'lazzy' }
];
<tr ng-repeat="user in users | reverse">
  user: {{ user.id }}, {{ user.name }}
</tr>
<!--result:
  user: 3, lazzy
  user: 2, dazzy,
  user: 1, bazzy
-->

###isEmpty get collection or string and return if it empty[Boolean]

<tr ng-repeat="order in orders" ng-hide="orders | isEmpty">
<!-- ..... -->
</tr>
<!--some replacer msg-->
<tr ng-show="orders | isEmpty">
  no content to show
</tr>

###contains Checks if given expression(or value) is present in one or more object in the collection
Usage: collection | contains: 'expression'
Aliases: some
example 1:

$scope.array = [1,2,3,4];
<th ng-show="{{ array | contains: 2 }}">...</th>

example 2:

$scope.collection = [
  { user: { id: 1, name: 'foo' } },
  { user: { id: 2, name: 'bar' } },
  { user: { id: 3, name: 'baz' } }
];
<th ng-show="{{ collection | some: '!(user.id % 2) && user.name.indexOf(\'b\') === 0' }}">...</th>
<!--result: true

###every Checks if given expression(or value) return truthy value for all members of a collection
Usage: collection | every: 'expression'
example 1:

$scope.array = [1,1,1,1];
<th ng-show="{{ array | every: 1 }}">...</th>
<!--result: true

example 2:

$scope.collection = [
  { user: { id: 4, name: 'foo' } },
  { user: { id: 6, name: 'bar' } },
  { user: { id: 8, name: 'baz' } }
];
<th ng-show="{{ collection | every: !(user.id % 2) }}">...</th>
<!--result: true

###xor Exclusive or between two collections
Usage: collection1 | xor: collection2: expression[optional]

Example1:

<p ng-repeat="elm in [1,2,3,4] | xor: [2,3,5]">
{{ elm }}
</p>
<!--result:
1 4 5

Example2:

$scope.users1 = [
  { id: 0, details: { first_name: 'foo', last_name: 'bar' } },
  { id: 1, details: { first_name: 'foo', last_name: 'baz' } },
  { id: 2, details: { first_name: 'foo', last_name: 'bag' } }
];
$scope.users2 = [
  { id: 3, details: { first_name: 'foo', last_name: 'bar' } },
  { id: 4, details: { first_name: 'foo', last_name: 'baz' } }
];
<th ng-repeat="user in users1 | xor: users2">
  {{ user.id }}
</th>
<!--result:
1 2 3 4 5
-->
<th ng-repeat="user in users1 | xor: users2: 'details.last_name'">
  {{ user.id }}, {{ user.details.first_name }} {{ user.details.last_name }}
</th>
<!--result:
2, foo bag

###toArray Convert objects into stable arrays.
Usage: object | toArray: addKey[optional]
if addKey set to true, the filter also attaches a new property $key to the value containing the original key that was used in the object we are iterating over to reference the property

<th ng-repeat="elm in object | toArray | orderBy: 'property'">
  {{ elm.name }}
</th>

###map Returns a new collection of the results of each expression execution.
Usage: collection | map: expression
Example1:

$scope.divide = function(elm) {
  return elm/2
}
<th ng-repeat="i in [1, 2, 3, 4, 5] | map: divide">
  {{ i }}
</th>
<!--result:
0.5, 1, 1.5, 2, 2.5

###pluck Used map

$scope.users = [
  { id:1, user: { name: 'Foo' } },
  { id:1, user: { name: 'Bar' } },
  { id:1, user: { name: 'Baz' } }
];
<th ng-repeat="name in users | map: 'user.name' ">
  {{ name }}
</th>
<!--result:
Foo
Bar
Baz

###range Return a new collection from a given length
Usage: collection | range: length

<th ng-repeat="i in [] | range: 3">
  {{ i }}
</th>
<!--result:
0
1
2

#String

###ucfirst

ucfirstFilter get string as parameter and return it capitalized

<p> {{ 'foo bar baz' | ucfirst }}</p>

<!--
result:
Foo Bar Baz
-->

###uriEncode get string as parameter and return encoded uri

<a ng-href="http://domain.com/fetch/{{ data.name | uriEncode }}">Link</a>

###uriComponentEncode get string as parameter and return encoded uri component

<a ng-href="http://domain.com/fetch/{{ 'Some&strange=chars' | uriComponentEncode }}">Link</a>

###slugify Transform text into a URL slug. Replaces whitespaces, with dash("-"), or given argument

<a ng-href="http://domain.com/fetch/{{ 'Some string with spaces' | slugify }}">Link</a>
<!--replace with given argument-->
<a ng-href="http://domain.com/fetch/{{ 'Some string with spaces' | slugify:'=' }}">Link</a>
<!--
result:
<a ng-href="http://domain.com/fetch/some-string-with-spaces">Link</a>

<a ng-href="http://domain.com/fetch/some=string=with=spaces">Link</a>
-->

###latinize Remove accents/diacritics from a string

 {{ 'Sòme strÏng with Âccénts' | latinize }}
<!--
result:
  Some strIng with Accents
-->

###startsWith return whether string starts with the starts parameter.
usage: string | startsWith: 'start': case-sensitive[optional]

 {{ 'Lorem ipsum' | startsWith: 'lorem' }}
 {{ 'Lorem Ipsum' | startsWith: 'lorem': true }}
 <!--result:
  true
  false

###endsWith return whether string ends with the ends parameter.
usage: string | endsWith: 'ends': case-sensitive[optional]

 {{ 'image.JPG' | endsWith: '.jpg' }}
 {{ 'image.JPG' | endsWith: '.jpg': true }}
 <!--result:
  true
  false

###stripTags strip out html tags from string
**Important: this filter jobs it's not to replace ng-bind-html directive, it's only for tiny plain text

$scope.text = '<p class="paragraph">Lorem Ipsum is simply dummy text of the printing...</p>';
<p>{{ text | stripTags }}</p>
<!--result:
Lorem Ipsum is simply dummy text of the printing...
-->

###stringular get string with {n} and replace match with enumeration values

<p>{{ 'lorem {0} dolor {1} amet' | stringular:'ipsum':'sit' }}</p>
<p>{{ '{3} {0} dolor {1} amet' | stringular:'ipsum':'sit':null:'lorem' }}</p>

<!-- result:
<p>lorem ipsum dolor sit amet</p>
<p>lorem ipsum dolor sit amet</p>
-->

<p>{{ 'lorem {0} dolor sit amet' | stringular }}<p>
<!--result:
<p>lorem {0} dolor sit amet</p>

###truncate truncates a string given a specified length, providing a custom string to denote an omission.
usage: | truncate: [length]: [suffix-optional]: [preserve-optinal]

$scope.text = 'lorem ipsum dolor sit amet';
<!--should not cut words in the middle if preserve is true-->
<p>{{ text | truncate: 7: '...': true }}</p>

<p>{{ text | truncate: 13: '...' }}</p>

<!--should not touch string that shorter than the provided length -->
<p>{{ text | truncate: 50: '...' }}</p>

<!--result:
lorem ipsum...
lorem ipsum d...
lorem ipsum dolor sit amet

###reverse Reverses a string

$scope.text = 'lorem ipsum dolor sit amet';
<p>{{ text | reverse }}</p>
<!--result:
tema tis rolod muspi merol

###wrap Wrap a string with another string
usage: string | wrap: string: string[optional]

<p>{{ 'foo' | wrap: '/' }}</p>
<p>{{ 'foo' | wrap: '{{': '}}' }}</p>
<!--result:
/foo/
{{foo}}

###trim Strip whitespace (or other characters) from the beginning and end of a string
usage: string | trim: chars[optional]

<p>{{ '    foo   ' | trim }}</p>
<p>{{ 'foobarfoo' | trim: 'foo' }}
<!--result:
foo
bar

###ltrim Strip whitespace (or other characters) from the beginning of a string
usage: string | ltrim: chars[optional]

<p>{{ 'barfoobar' | ltrim: 'bar' }}
<!--result:
foobar

###rtrim Strip whitespace (or other characters) from the end of a string
usage: string | rtrim: chars[optional]

<p>{{ 'barfoobar' | rtrim: 'bar' }}
<!--result:
barfoo

###repeat Repeats a string n times
Usage: string | repeat: n: separator[optional]

<p>{{ 'foo' | repeat: 3: '-' }}</p>
<!--repeat:
foo-foo-foo

###test Test if a string match a pattern
Usage: string | test: pattern: flag[optional]

<p>{{ '15/12/2003' | test: '^[0-9]{2}[/]{1}[0-9]{2}[/]{1}[0-9]{4}$': 'i' }}</p>
<p>{{ '0123456' | test: '\\D': 'i' }}</p>
<!--result:
true
true

###match Return an array of matched element in a string
Usage: string | match: pattern: flag[optional]

<p>{{ '15/12/2003' | match: '\\d+': 'g' }}</p>
<!--result:
['15', '12', '2003']

#Math

###max max find and return the largest number in a given array. if an expression is provided, will return max value by expression. Usage: array | max: expression[optional]

$scope.users = [
  { user: { score: 988790 } },
  { user: { score: 123414 } },
  { user: { rank : 988999 } },
  { user: { score: 987621 } }
];
<p> {{ [1,2,3,4,7,8,9] | max }}</p>
<p> {{ users | max: 'user.score || user.rank' }}</p>
<!--
result:
* 9
* { user: { rank : 988999 } }

###min min find and return the lowest number in a given array. if an expression is provided, will return min value by expression. Usage: array | min: expression[optional]

$scope.users = [
  { user: { score: 988790 } },
  { user: { score: 123414 } },
  { user: { score: 987621 } }
];
<p> {{ [1,2,3,4,7,8,9] | min }}</p>
<p> {{ users | min: 'user.score' }}</p>
<!--
result:
* 1
* { user: { score: 123414 } }

###percent Percentage between two numbers
Usage: number | percent: total: round[optional], round by default false.

<p>{{ 23 | percent: 500 }}</p>
<p>{{ 23 | percent: 500: true }}</p>
<!--result:
4.6
4

###radix Converting decimal numbers to different bases(radix)
Usage: number | radix: base

<p>{{ 8 | radix: 2 }}</p>
<p>{{ 32586 | radix: 16 }}</p>
<!--result:
1000
7F4A

###sum Sum up all values within an array
Usage: array | sum: initial-value[optional]

{{ [2,3,5] | sum }}
{{ [2,3,5] | sum: 10 }}
<!--result
10
20

###degrees Converts radians into degrees
Usage: radians | degrees: round-to-decimal,

<p>{{ 0.785398 | degrees: 0 }}</p>
<p>{{ -1.57 | degrees: 3 }}</p>
<!--result
45
-89.954

###radians Converts degrees into radians
Usage: degrees | radians: round-to-decimal,

<p>{{ 45 | radians: 2 }}</p>
<p>{{ 180 | radians: 5 }}</p>
<!--result
0.79
3.14159

###shortFmt Converts numbers into formatted display
Usage: number | shortFmt: round-to-decimal,

<p>{{ 45000 | shortFmt: 0 }}</p>
<p>{{ 18234822 | shortFmt: 1 }}</p>
<!--result
45 k
18.2 m

###byteFmt Converts bytes into formatted display
Usage: number | byteFmt: round-to-decimal,

<p>{{ 1998 | byteFmt: 2 }}</p>
<p>{{ 1339234901 | byteFmt: 5 }}</p>
<!--result
1.95 KB
1.24726 GB

###kbFmt Converts kilobytes into formatted display
Usage: number | kbFmt: round-to-decimal,

<p>{{ 1024 | kbFmt: 0 }}</p>
<p>{{ 1049901 | kbFmt: 5 }}</p>
<!--result
1 MB
1.00126 GB

#Boolean

Used for boolean expression in chaining filters

###isGreaterThan aliases: >

<div ng-show="{{ array | map | sum | isGreaterThan: num }}"></div>
<!--or: -->
<div ng-show="{{ array | map | sum | >: num }}"></div>

###isGreaterThanOrEqualTo aliases: >=

<div ng-show="{{ array | map | sum | isGreaterThanOrEqualTo: num }}"></div>
<!--or: -->
<div ng-show="{{ array | map | sum | >=: num }}"></div>

###isLessThan aliases: <

<div ng-show="{{ array | map | sum | isLessThan: num }}"></div>
<!--or: -->
<div ng-show="{{ array | map | sum | <: num }}"></div>

###isLessThanOrEqualTo aliases: <=

<div ng-show="{{ array | map | sum | isLessThanOrEqualTo: num }}"></div>
<!--or: -->
<div ng-show="{{ array | map | sum | <=: num }}"></div>

###isEqualTo aliases: ==

<div ng-show="{{ array | map | sum | isEqualTo: num }}"></div>
<!--or: -->
<div ng-show="{{ array | map | sum | ==: num }}"></div>

###isNotEqualTo aliases: !=

<div ng-show="{{ array | map | sum | isNotEqualTo: num }}"></div>
<!--or: -->
<div ng-show="{{ array | map | sum | !=: num }}"></div>

###isIdenticalTo aliases: ===

<div ng-show="{{ array | map | sum | isIdenticalTo: num }}"></div>
<!--or: -->
<div ng-show="{{ array | map | sum | ===: num }}"></div>

###isNotIdenticalTo aliases: !==

<div ng-show="{{ array | map | sum | isNotIdenticalTo: num }}"></div>
<!--or: -->
<div ng-show="{{ array | map | sum | !==: num }}"></div>

#Changelog ###0.5.7

  • fix issue #119

###0.5.6

  • fix issue #145

###0.5.5

  • add range and chunk-by filters
  • fix issue #139

###0.5.4

  • add match and test filters

###0.5.3

  • add latinize filter

###0.5.1

  • min and max can get a property as an argument.
  • improve slugify filter.
  • refactor filterWatcher(memoize), now it works like a charm.
  • refactor groupBy now it can get be chain with other filters

###0.4.9

###0.4.8

###0.4.7



#TODO

  • Add project website on branch gh-pages, see Github-help

#Contributing

  • If you planning add some feature please create issue before.
  • Don't forget about tests.

Clone the project: 

$ git clone
$ npm install
$ bower install

Run the tests:

$ grunt test

Deploy:
Run the build task, update version before(bower,package)

$ grunt build
$ git tag v0.*.*
$ git push origin master --tags

About

Bunch of useful filters for AngularJS (with no external dependencies!)

github.com/a8m/angular-filter

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