总的来说用法 分三种:
》1: scope: false --> 继承父域,实现 双向数据绑定
示例代码 可自测:
<!DOCTYPE html>
<html lang="en" ng-app="myApp">
<head>
<meta charset="UTF-8">
<title>directive属性 scope:{}</title>
</head>
<body ng-controller="mainCtrl">
<p>scope:false --> 继承父域,实现 双向数据绑定</p>
姓名:<input type="text" name="" ng-model="myName">
年龄:<input type="text" name="" ng-model="myAge">
性别:<input type="text" name="" ng-model="mySex" > <div my-directive name="myName" this-is-age="myAge" sex="mySex" say-words="say(arg)"></div> <script type="text/javascript" src="../../../../lib/jquery/v1.10.2/jquery.min.js"></script>
<script type="text/javascript" src="../../js/angular-v1.4.6.min.js"></script>
<script type="text/javascript">
var myApp = angular.module('myApp', []);
// mainCtrl
myApp.controller('mainCtrl', mainController);
// myDirective
myApp.directive('myDirective', myDirective ) // main controller
function mainController($scope){
$scope.myName = 'jcy';
$scope.myAge = '22';
$scope.mySex = 'male';
$scope.info = '想知道我的个人信息吗,不告诉你。。。';
$scope.say = function(arg){
alert(arg);
}
}; // my directive
function myDirective(){
return {
scope: false, // {} = isolate, true = child, false/undefined = no change
restrict: 'AE', // E = Element, A = Attribute, C = Class, M = Comment
template: '<div>'+
'<button>我要说话</button>'+
'<p>'+
'姓名:<input type="text" name="" ng-model="myName">'+
'年龄:<input type="text" name="" ng-model="myAge">'+
'性别:<input type="text" name="" ng-model="mySex" > <br>'+
'介绍1:<span ng-bind="info"></span><br>'+
'介绍2:<span>{{info}}</span>'+
'</p>'+
'</div>',
link: function($scope, iElm, iAttrs, controller) {
$(iElm).on('click','button',function(e){
var words = '注意这个传值方式哦' ;
$scope.say( { arg:words } );
});
}
};
} </script> </body>
</html>
》2: scope: true -->
初始化,继承父域;
子域属性值没有发生改变前,可实现 单向数据绑定(父变 --> 子变);
子域属性值发生改变后,实现子域与发父域隔离(父变 --> 子不变);
示例代码 可自测:
<!DOCTYPE html>
<html lang="en" ng-app="myApp">
<head>
<meta charset="UTF-8">
<title>directive属性 scope:{}</title>
</head>
<body ng-controller="mainCtrl">
<p>scope:true --> 初始化,继承父域;
子域属性值没有发生改变前,可实现 单向数据绑定(父变 --> 子变);
子域属性值发生改变后,实现子域与发父域隔离(父变 --> 子不变)</p>
姓名:<input type="text" name="" ng-model="myName">
年龄:<input type="text" name="" ng-model="myAge">
性别:<input type="text" name="" ng-model="mySex" > <div my-directive name="myName" this-is-age="myAge" sex="mySex" say-words="say(arg)"></div> <script type="text/javascript" src="../../../../lib/jquery/v1.10.2/jquery.min.js"></script>
<script type="text/javascript" src="../../js/angular-v1.4.6.min.js"></script>
<script type="text/javascript">
var myApp = angular.module('myApp', []);
// mainCtrl
myApp.controller('mainCtrl', mainController);
// myDirective
myApp.directive('myDirective', myDirective ) // main controller
function mainController($scope){
$scope.myName = 'jcy';
$scope.myAge = '22';
$scope.mySex = 'male';
$scope.info = '想知道我的个人信息吗,不告诉你。。。';
$scope.say = function(arg){
alert(arg.arg);
}
}; // my directive
function myDirective(){
return {
scope: true, // {} = isolate, true = child, false/undefined = no change
restrict: 'AE', // E = Element, A = Attribute, C = Class, M = Comment
template: '<div>'+
'<button>我要说话</button>'+
'<p>'+
'姓名:<input type="text" name="" ng-model="myName">'+
'年龄:<input type="text" name="" ng-model="myAge">'+
'性别:<input type="text" name="" ng-model="mySex" > <br>'+
'介绍1:<span ng-bind="info"></span><br>'+
'介绍2:<span>{{info}}</span>'+
'</p>'+
'</div>',
link: function($scope, iElm, iAttrs, controller) {
$(iElm).on('click','button',function(e){
var words = '这是要测试 scope绑定函数,并且给函数传值的方式' ;
$scope.say( { arg:words } );
});
}
};
} </script> </body>
</html>
》3:
scope 的绑定方式:“@”、“=”、“&”
绑定的名称:要全为小写 中间可用 “-” 符号连接, 绑定到到 scope中时,去掉“-”,并将“-”后第一个字符改为大写,驼峰式命名
scope 绑定方式的区别:
“=”:指令中的属性取值为controller中对应$scope上属性的取值,可用于双向数据的绑定.
“@”:
1.指令中的取值为html中的字面量/直接量. 即:attr="xxx"时,"@attr"形式得到的是 “xxx”字符串;
2.绑定 controller中的$scope property. 即:arrt="{{xxx}}",或者其它绑定$scope.property时,“@attr"形式得到的是$scope.property。
可用于单向数据绑定。父(改变)-->子(改变),子(改变)-->父(不改变)。
“&”:指令中的取值为Contoller中对应$scope上的属性,但是这属性必须为一个函数回调。
当为"func:&aa"时,传值方式 $scope.func({ arg1:"xxx", arg2:"xxxx", .... }), html如 <div my-directive aa="xxfunction(arg1, arg2,......)"></div>
示例代码 可自测:
<!DOCTYPE html>
<html lang="en" ng-app="myApp">
<head>
<meta charset="UTF-8">
<title>directive属性 scope:{}</title>
</head>
<body ng-controller="mainCtrl">
<p>
总结:<br>
scope 的绑定方式:“@”、“=”、“&” <br>
绑定的名称:要全为小写 中间可用 “-” 符号连接, 绑定到到 scope中时,去掉“-”,并将“-”后第一个字符改为大写,驼峰式命名 <br>
scope 绑定方式的区别:<br>
“=”:指令中的属性取值为controller中对应$scope上属性的取值,可用于双向数据的绑定. <br>
“@”:
1.指令中的取值为html中的字面量/直接量. 即:attr="xxx"时,"@attr"形式得到的是 “xxx”字符串;<br>
2.绑定 controller中的$scope property. 即:arrt="{{xxx}}",或者其它绑定$scope.property时,“@attr"形式得到的是$scope.property。
可用于单向数据绑定。父(改变)-->子(改变),子(改变)-->父(不改变)。<br>
“&”:指令中的取值为Contoller中对应$scope上的属性,但是这属性必须为一个函数回调。
当为"func:&aa"时,传值方式 $scope.func({ arg1:"xxx", arg2:"xxxx", .... }), html如 <pre><div my-directive aa="xxfunction(arg1, arg2,......)"></div></pre> <br>
</p> 姓名:<input type="text" name="" ng-model="myName">
年龄:<input type="text" name="" ng-model="myAge">
性别:<input type="text" name="" ng-model="mySex" > <div my-directive name="myName" this-is-age="myAge" sex="{{mySex}}" say-words="say(arg)"></div> <script type="text/javascript" src="../../../../lib/jquery/v1.10.2/jquery.min.js"></script>
<script type="text/javascript" src="../../js/angular-v1.4.6.min.js"></script>
<script type="text/javascript">
var myApp = angular.module('myApp', []);
// mainCtrl
myApp.controller('mainCtrl', mainController);
// myDirective
myApp.directive('myDirective', myDirective ) // main controller
function mainController($scope){
$scope.myName = 'jcy';
$scope.myAge = '22';
$scope.mySex = 'male';
$scope.say = function(arg){
alert(arg);
}
}; // my directive
function myDirective(){
return {
scope: {
name: "=",
age: "=thisIsAge",
sex: "@",
say: "&sayWords"
}, // {} = isolate, true = child, false/undefined = no change
restrict: 'AE', // E = Element, A = Attribute, C = Class, M = Comment
template: '<div>'+
'<button>我要说话</button>'+
'<p>'+
'姓名:<input type="text" name="" ng-model="name">'+
'年龄:<input type="text" name="" ng-model="age">'+
'性别:<input type="text" name="" ng-model="sex" >'+
'</p>'+
'</div>',
link: function($scope, iElm, iAttrs, controller) {
$(iElm).on('click','button',function(e){
var words = '这是要测试 scope绑定函数,并且给函数传值的方式' ;
$scope.say( { arg:words } );
});
}
};
} </script> </body>
</html>