最近在做Hybird App,接触到了AngularJs,感觉用起来蛮爽的，今天share下AngularJs的核心功能之一：双向数据绑定。
我们在页面中加入一个表单：
<!DOCTYPE html>
<html ng-app="userInfoModule">
<head>
<meta name="content-type" content="text/html; charset=UTF-8">
<script src="angular-1.5.0/angular.min.js"></script>
<script src="js/Forms.js"></script>
<link href="http://libs.baidu.com/bootstrap/3.0.3/css/bootstrap.min.css" rel="stylesheet">
<script>
</script>
</head>
<body>
<div class="panel panel-primary">
<div class="panel-heading">
<div class="panel-title">
Two-way Binding demo
</div>
</div>
<div class="panle-body">
<div class="row">
<div class="col-md-12">
<form class="form-horizontal" role="form" ng-controller="userInfoControl">
<div class="form-group">
<label class="col-md-2 control-label">
email-address:
</label>
<div class="col-md-10">
<input type="email" class="form-control" placeholder="please input you email-address" ng-model="userInfo.email">
</div>
</div>
<div class="from-group">
<label class="col-md-2 control-label">
password:
</label>
<div class="col-md-10">
<input type="password" class="form-control" placeholder="please input your password" ng-model="userInfo.password">
</div>
</div>
<div class="form-group">
<div class="col-md-offset-2 col-md-10">
<div class="checkbox">
<label >
<input type="checkbox" ng-model="userInfo.autoLogin">login auto
</label>
</div>
</div>
</div>
<div class="form-group">
<div class="col-md-offset-2 col-md-10">
<button class="btn btn-default" ng-click="getFormData()">
get form data
</button>
<button class="btn btn-default" ng-click="setFormData()">
set form data
</button>
<button class="btn btn-default" ng-click="resetFormData()">
reset form data
</button>
</div>
</div>
</form>
</div>
</div>
</div>
</div>
</body>
</html>
之后，定义模块跟controller,并在controller中绑定我们的model跟事件。
var userInfoModule=angular.module('userInfoModule',[]); /*定义模块*/
userInfoModule.controller('userInfoControl',['$scope',function($scope){/*定义Controller，并注入对象*/
$scope.userInfo={ /*初始化数据*/
email:"liuhuichao1128@163.com",
password:"1112345",
autoLogin:true
};
$scope.getFormData=function(){ /*获取模型数据*/
console.log($scope.userInfo);
};
$scope.setFormData=function(){/*设置数据*/
$scope.userInfo={
email:"2523579001@163.com",
password:"000000000000",
autoLogin:true
};
};
$scope.resetFormData=function(){/*重置数据*/
$scope.userInfo={
email:"liuhuichao1128@163.com",
password:"1112345",
autoLogin:true
};
};
}]);
代码解析：
用完之后，最大的感觉就是，DOM操作少了，数据双向绑定后，页面上表单改变值，也不用再重新取值，非常方便。
![【笔记】AngularJs学习笔记[01] 数据绑定](https://ucc.alicdn.com/images/user-upload-01/img_convert/149b4355742438d1ceb099d9b2b75418.png?x-oss-process=image/resize,h_160,m_lfit)
