The ng-init directive allows you to evaluate an expression in the current scope.
In the following example, the ng-init directive initializes employees variable which is then used in the ng-repeat directive to loop thru each employee. In a real world application you should use a controller instead of ng-init to initialize values on a scope.
Demo.html
<![CDATA[
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<script src="angular.min.js"></script>
<style>
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;
}
</style>
</head>
<body ng-app>
<div ng-init="employees = [
{ name: 'Santosh Kumar Singh', gender: 'Male', city: 'Patna, Bihar' },
{ name: 'Anu Singh', gender: 'Female', city: 'Utter Pradesh' },
{ name: 'Rajeev Kumar', gender: 'Male', city: 'New Delhi' },
{ name: 'Priyanka', gender: 'Female', city: 'Delhi' },
{ name: 'Sanjay Kumar', gender: 'Male', city: 'Darbhanga' },
{ name: 'Gagan', gender: 'Female', city: 'Haryana' },
{ name: 'Chandan Kumar', gender: 'Male', city: 'Gaya' }
]">
<table>
<thead>
<tr>
<th>Name</th>
<th>Gender</th>
<th>City</th>
</tr>
</thead>
<tbody>
<tr ng-repeat="employee in employees">
<td> {{ employee.name }} </td>
<td> {{ employee.gender}} </td>
<td> {{ employee.city}} </td>
</tr>
</tbody>
</table>
</div>
</body>
</html>
]]>
ng-init should only be used for aliasing special properties of ng-repeat directive. In the following example, ng-init is used to store the index of the parent element in parentIndex variable.
Demo1.html
<![CDATA[
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<script src="angular.min.js"></script>
<script src="Demo.js"></script>
</head>
<body ng-app="myModule">
<div ng-controller="myController">
<ul>
<li ng-repeat="country in countries" ng-init="parentIndex = $index">
{{country.name}}
<ul>
<li ng-repeat="city in country.cities">
{{city.name}} - Parent Index = {{ parentIndex }}, Index = {{ $index }}
</li>
</ul>
</li>
</ul>
</div>
</body>
</html>
]]>
Demo.js
<![CDATA[
var app = angular
.module("myModule", [])
.controller("myController", function ($scope) {
var countries = [
{
name: "India",
cities: [
{ name: "Bihar" },
{ name: "Utter Pradesh" },
{ name: "New Delhi" } ,
{ name: "Delhi" },
{ name: "Darbhanga" },
{ name: "Haryana" },
{ name: "Gaya" }
]
}
];
$scope.countries = countries;
});
]]>
