# AngularJS Bootstrap
AngularJS 的首选样式表是 Twitter Bootstrap， Twitter Bootstrap 是目前最受欢迎的前端框架。
[查看 Bootstrap教程](/bootstrap/bootstrap-tutorial.html "Bootstrap教程")。
## Bootstrap
你可以在你的 AngularJS 应用中加入 Twitter Bootstrap，你可以在你的 <head>元素中添加如下代码:
```
<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
```
如果站点在国内，建议使用百度静态资源库的Bootstrap，代码如下：
```
<link rel="stylesheet" href="//apps.bdimg.com/libs/bootstrap/3.2.0/css/bootstrap.min.css">
```
以下是一个完整的 HTML 实例, 使用了 AngularJS 指令和 Bootstrap 类。
## HTML 代码
```
<!DOCTYPE html>
<html ang-app="">
<head>
<link rel="stylesheet" href="http://apps.bdimg.com/libs/bootstrap/3.2.0/css/bootstrap.min.css">
</head>
<body ng-controller="userController">
<div class="container">
<h3>Users</h3>
<table class="table table-striped">
<thead><tr>
<th>Edit</th>
<th>First Name</th>
<th>Last Name</th>
</tr></thead>
<tbody><tr ng-repeat="user in users">
<td>
<button class="btn" ng-click="editUser(user.id)">
<span class="glyphicon glyphicon-pencil"></span> Edit
</button>
</td>
<td>{{ user.fName }}</td>
<td>{{ user.lName }}</td>
</tr></tbody>
</table>
<hr>
<button class="btn btn-success" ng-click="editUser('new')">
<span class="glyphicon glyphicon-user"></span> Create New User
</button>
<hr>
<h3 ng-show="edit">Create New User:</h3>
<h3 ng-hide="edit">Edit User:</h3>
<form class="form-horizontal">
<div class="form-group">
<label class="col-sm-2 control-label">First Name:</label>
<div class="col-sm-10">
<input type="text" ng-model="fName" ng-disabled="!edit" placeholder="First Name">
</div>
</div>
<div class="form-group">
<label class="col-sm-2 control-label">Last Name:</label>
<div class="col-sm-10">
<input type="text" ng-model="lName" ng-disabled="!edit" placeholder="Last Name">
</div>
</div>
<div class="form-group">
<label class="col-sm-2 control-label">Password:</label>
<div class="col-sm-10">
<input type="password" ng-model="passw1" placeholder="Password">
</div>
</div>
<div class="form-group">
<label class="col-sm-2 control-label">Repeat:</label>
<div class="col-sm-10">
<input type="password" ng-model="passw2" placeholder="Repeat Password">
</div>
</div>
</form>
<hr>
<button class="btn btn-success" ng-disabled="error || incomplete">
<span class="glyphicon glyphicon-save"></span> Save Changes
</button>
</div>
<script src = "http://apps.bdimg.com/libs/angular.js/1.2.15/angular.min.js"></script>
<script src = "myUsers.js"></script>
</body>
</html>>
```
## 指令解析
| AngularJS 指令 | 描述 |
| --- | --- |
| html ng-app | 为 `<html> `元素定义一个应用(未命名) |
| body ng-controller | 为 `<body>` 元素定义一个控制器 |
| tr ng-repeat | 循环 users 对象数组，每个 user 对象放在 `<tr>` 元素中。 |
| button ng-click | 当点击 `<button>` 元素时调用函数 editUser() |
| h3 ng-show | 如果 edit = true 显示 `<h3>` 元素 |
| h3 ng-hide | 如果 edit = true 隐藏 `<h3>` 元素 |
| input ng-model | 为应用程序绑定 `<input>` 元素 |
| button ng-disabled | 如果发生错误或者 ncomplete = true 禁用 `<button>` 元素 |
## Bootstrap 类解析
| 元素 | Bootstrap 类 | 定义 |
| --- | --- | --- |
| `<div>` | container | 内容容器 |
| `<table>` | table | 表格 |
| `<table>` | table-striped | 带条纹背景的表格 |
| `<button>` | btn | 按钮 |
| `<button>` | btn-success | 成功按钮 |
| `<span>` | glyphicon | 字形图标 |
| `<span>` | glyphicon-pencil | 铅笔图标 |
| `<span>` | glyphicon-user | 用户图标 |
| `<span>` | glyphicon-save | 保存图标 |
| `<form>` | form-horizontal | 水平表格 |
| `<div>` | form-group | 表单组 |
| `<label>` | control-label | 控制器标签 |
| `<label>` | col-sm-2 | 跨越 2 列 |
| `<div>` | col-sm-10 | 跨越 10 列 |
## JavaScript 代码
```
function userController($scope) {
$scope.fName = '';
$scope.lName = '';
$scope.passw1 = '';
$scope.passw2 = '';
$scope.users = [
{id:1, fName:'Hege', lName:"Pege" },
{id:2, fName:'Kim', lName:"Pim" },
{id:3, fName:'Sal', lName:"Smith" },
{id:4, fName:'Jack', lName:"Jones" },
{id:5, fName:'John', lName:"Doe" },
{id:6, fName:'Peter', lName:"Pan" }
];
$scope.edit = true;
$scope.error = false;
$scope.incomplete = false;
$scope.editUser = function(id) {
if (id == 'new') {
$scope.edit = true;
$scope.incomplete = true;
$scope.fName = '';
$scope.lName = '';
} else {
$scope.edit = false;
$scope.fName = $scope.users[id-1].fName;
$scope.lName = $scope.users[id-1].lName;
}
};
$scope.$watch('passw1',function() {$scope.test();});
$scope.$watch('passw2',function() {$scope.test();});
$scope.$watch('fName', function() {$scope.test();});
$scope.$watch('lName', function() {$scope.test();});
$scope.test = function() {
if ($scope.passw1 !== $scope.passw2) {
$scope.error = true;
} else {
$scope.error = false;
}
$scope.incomplete = false;
if ($scope.edit && (!$scope.fName.length ||
!$scope.lName.length ||
!$scope.passw1.length || !$scope.passw2.length)) {
$scope.incomplete = true;
}
};
}
```
## JavaScript 代码解析
| Scope 属性 | 用途 |
| --- | --- |
| $scope.fName | 模型变量 (用户名) |
| $scope.lName | 模型变量 (用户姓) |
| $scope.passw1 | 模型变量 (用户密码 1) |
| $scope.passw2 | 模型变量 (用户密码 2) |
| $scope.users | 模型变量 (用户的数组) |
| $scope.edit | 当用户点击创建用户时设置为true。 |
| $scope.error | 如果 passw1 不等于 passw2 设置为 true |
| $scope.incomplete | 如果每个字段都为空(length = 0)设置为 true |
| $scope.editUser | 设置模型变量 |
| $scope.watch | 监控模型变量 |
| $scope.test | 验证模型变量的错误和完整性 |
