前一篇了解了AngularJS的一些简单的使用,这里继续跟着w3c学习一下剩下的内容。
本篇根据w3cschool.cc继续学习AngularJS剩余的内容,包括:
1 事件
2 模块
3 表单
4 数据验证
5 bootstrap CSS风格
6 include包含其他页面
7 应用程序
8 参考手册
首先看一下html的事件
关于html的事件,文中给出了三个例子,点击、隐藏、显示。使用方法基本相同:
先看一下点击的例子,点击按钮后,会触发ng-click内的方法,进行累计加一:
<div ng-app="" ng-controller="myController">
<button ng-click="count = count + 1">点我!</button>
<p>{{ count }}</p>
</div>
对于ng-hide和ng-show原理相同,都是指定一个bool值,true或false。
初始的时候myVar的值为false,因此并不隐藏,每次点击myVar都会改变为相反的值,达到现实隐藏的效果。
<div ng-app="" ng-controller="personController"> <button ng-click="toggle()">隐藏/显示</button> <p ng-hide="myVar">
名: <input type="text" ng-model="person.firstName"><br>
姓: <input type="text" ng-model="person.lastName"><br>
<br>
姓名: {{person.firstName + " " + person.lastName}}
</p> </div> <script>
function personController($scope) {
$scope.person = {
firstName: "John",
lastName: "Doe"
};
$scope.myVar = false;
$scope.toggle = function() {
$scope.myVar = !$scope.myVar;
};
}
</script>
ng-show使用方法也相同
<div ng-app="" ng-controller="personController"> <button ng-click="toggle()">隐藏/显示</button> <p ng-show="myVar">
名: <input type="text" ng-model="person.firstName"><br>
姓: <input type="text" ng-model="person.lastName"><br>
<br>
姓名: {{person.firstName + " " + person.lastName}}
</p> </div> <script>
function personController($scope) {
$scope.person = {
firstName: "John",
lastName: "Doe"
};
$scope.myVar = true;
$scope.toggle = function() {
$scope.myVar = !$scope.myVar;
};
}
</script>
关于AngularJS的模块
模块定义了用户的应用,所有的控制器属于一个模块。之前使用的ng-app就是模块的定义。
例如下面的代码,定义了一个应用程序的模块myApp,并定义了一个控制器myCtrl:
<body> <div ng-app="myApp" ng-controller="myCtrl">
{{ firstName + " " + lastName }}
</div> <script src="//www.w3cschool.cc/try/angularjs/1.2.5/angular.min.js"></script> <script src="myApp.js"></script>
<script src="myCtrl.js"></script> </body>
对于控制器,也可以通过模块来定义声明:
<head>
<script src="//www.w3cschool.cc/try/angularjs/1.2.5/angular.min.js"></script>
</head> <body> <div ng-app="myApp" ng-controller="myCtrl">
{{ firstName + " " + lastName }}
</div> <script>
var app = angular.module("myApp", []); app.controller("myCtrl", function($scope) {
$scope.firstName = "John";
$scope.lastName = "Doe";
});
</script> </body>
不过要提前加载angularjs的脚本,这样再script中 angular.module才可以使用。或者在这句话的前面加载js。
关于AngularJS表单
表单是web中重要的组成部分,如下面样例所示,可以很方便的获取到form中的数据
<div ng-app="" ng-controller="formController">
<form novalidate>
First Name:<br>
<input type="text" ng-model="user.firstName"><br>
Last Name:<br>
<input type="text" ng-model="user.lastName">
<br><br>
<button ng-click="reset()">RESET</button>
</form>
<p>form = {{user}}</p>
<p>master = {{master}}</p>
</div> <script>
function formController ($scope) {
$scope.master = {firstName: "John", lastName: "Doe"};
$scope.reset = function() {
$scope.user = angular.copy($scope.master);
};
$scope.reset();
};
</script>
关于验证
AngularJS提供了很多验证机制,例如邮箱等。
<!DOCTYPE html>
<html> <body>
<h2>Validation Example</h2> <form ng-app="" ng-controller="validateCtrl"
name="myForm" novalidate> <p>Username:<br>
<input type="text" name="user" ng-model="user" required>
<span style="color:red" ng-show="myForm.user.$dirty && myForm.user.$invalid">
<span ng-show="myForm.user.$error.required">Username is required.</span>
</span>
</p> <p>Email:<br>
<input type="email" name="email" ng-model="email" required>
<span style="color:red" ng-show="myForm.email.$dirty && myForm.email.$invalid">
<span ng-show="myForm.email.$error.required">Email is required.</span>
<span ng-show="myForm.email.$error.email">Invalid email address.</span>
</span>
</p> <p>
<input type="submit"
ng-disabled="myForm.user.$dirty && myForm.user.$invalid ||
myForm.email.$dirty && myForm.email.$invalid">
</p> </form> <script src="//apps.bdimg.com/libs/angular.js/1.2.15/angular.min.js"></script>
<script>
function validateCtrl($scope) {
$scope.user = 'John Doe';
$scope.email = 'john.doe@gmail.com';
}
</script> </body>
</html>
可以通过.$dirty .$invalid来验证。
添加bootstrap样式
可以首先加载bootstrap css文件
<link rel="stylesheet" href="//apps.bdimg.com/libs/bootstrap/3.2.0/css/bootstrap.min.css">
样例代码参考:
<!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>
关于include包含其他html
可以通过ng-include来包含其他的web页面:
<body>
<div class="container">
<div ng-include="'myUsers_List.htm'"></div>
<div ng-include="'myUsers_Form.htm'"></div>
</div>
</body>
关于应用程序
创建AngularJS应用程序
<div ng-app="myTodoApp" ng-controller="myTodoCtrl"> <h2>我的笔记</h2> <p><textarea ng-model="message" cols="40" rows="10"></textarea></p> <p>
<button ng-click="save()">保存</button>
<button ng-click="clear()">清除</button>
</p> <p>剩下的字符数:<span ng-bind="left()"></span></p> </div> <script src="myTodoApp.js"></script>
<script src="myTodoCtrl.js"></script>
最后是Angular的指定 过滤器参考
ng_app 定义应用程序
ng_bind 绑定数据
ng_click 定义元素单击行为
ng_controller 定义控制器对象
ng_disabled 定义html标签可用
ng_init 初始化数据
ng_model 绑定应用程序数据
ng_repeat 实现循环
ng_show 显示html标签
currency 转换成货币
filter 从数组中选择一个子集
lowercase 格式化字符串为小写
uppercase 格式化字符串为大写
orderBy 排序