Part 8 AngularJS filters
Filters in angular can do 3 different things
1. Format data
2. Sort data
3. Filter data
Filters can be used with a binding expression or a directive
To apply a filter use pipe (|) character
Syntax : {{ expression | filterName:parameter }}
Angular filters for formatting data
| Filter |
Description |
| lowercase | Formats all characters to lowercase |
| uppercase | Formats all characters to uppercase |
| number | Formats a number as text. Includes comma as thousands separator and the number of decimal places can be specified |
| currency | Formats a number as a currency. $ is default. Custom currency and decimal places can be specified |
| date | Formats date to a string based on the requested format |
Angular Date formats
| Format |
Result |
| yyyy | 4 digit year. Exampe 1998 |
| yy | 2 digit year. Example 1998 => 98 |
| MMMM | January - December |
| MMM | Jan - Dec |
| MM | 01 - 12 |
| M | 1 - 12 (No leading ZEROS) |
| dd | 01 - 31 |
| d | 1 - 31 (No leading ZEROS) |
Angular date format documentation
https://docs.angularjs.org/api/ng/filter/date
limitTo filter : Can be used to limit the number of rows or characters in a string.
Syntax : {{ expression | limitTo : limit : begin}}
The following example uses all the above filters
Script.js
var app = angular
.module("myModule", [])
.controller("myController", function ($scope) { var employees = [
{
name: "Ben", dateOfBirth: new Date("November 23, 1980"),
gender: "Male", salary: 55000.788
},
{
name: "Sara", dateOfBirth: new Date("May 05, 1970"),
gender: "Female", salary: 68000
},
{
name: "Mark", dateOfBirth: new Date("August 15, 1974"),
gender: "Male", salary: 57000
},
{
name: "Pam", dateOfBirth: new Date("October 27, 1979"),
gender: "Female", salary: 53000
},
{
name: "Todd", dateOfBirth: new Date("December 30, 1983"),
gender: "Male", salary: 60000
}
]; $scope.employees = employees;
$scope.rowCount = 3;
});
HtmlPage1.html
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<script src="Scripts/angular.min.js"></script>
<script src="Scripts/Script.js"></script>
<link href="Styles.css" rel="stylesheet" />
</head>
<body ng-app="myModule">
<div ng-controller="myController">
Rows to display : <input type="number" step="1"
ng-model="rowCount" max="5" min="0" />
<br /><br />
<table>
<thead>
<tr>
<th>Name</th>
<th>Date of Birth</th>
<th>Gender</th>
<th>Salary (number filter)</th>
<th>Salary (currency filter)</th>
</tr>
</thead>
<tbody>
<tr ng-repeat="employee in employees | limitTo:rowCount">
<td> {{ employee.name | uppercase }} </td>
<td> {{ employee.dateOfBirth | date:"dd/MM/yyyy" }} </td>
<td> {{ employee.gender }} </td>
<td> {{ employee.salary | number:2 }} </td>
<td> {{ employee.salary | currency : "£" : 1 }} </td>
</tr>
</tbody>
</table>
</div>
</body>
</html>
Styles.css
body {
font-family: Arial;
}
table {
border-collapse: collapse;
}
td {
border: 1px solid black;
padding: 5px;
}
th {
border: 1px solid black;
padding: 5px;
text-align: left;
}
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