【AngularJS】—— 2 初识AngularJs(续)
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‘; $scope.email = ‘[email protected]‘; } </script> </body> </html>
可以通过.$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
郑重声明:本站内容如果来自互联网及其他传播媒体,其版权均属原媒体及文章作者所有。转载目的在于传递更多信息及用于网络分享,并不代表本站赞同其观点和对其真实性负责,也不构成任何其他建议。