angularjs学习系(3)指令的@=&

1:先说指令域scope的@

    我觉得描述很费劲,直接用代码来阐述:

    angularjs.html

    

<!doctype html>
<html ng-app='myApp'> 
 <head>   

 </head> 
 <body>     
  
 <div ng-controller="listCtrl">   
    <input type="text"  ng-model="t" />
	 <kid title="{{t}}" >  //这个必须指定的,这里的title是指令里scope的@对应的,t就是控制域scope下的
	    <span>我的angularjs</span>
	</kid>
</div> 
<script type="text/javascript" src="angular.js"></script>
<script type="text/javascript" src="main05.js"></script>
</body></html>

   main05.js

var myApp=angular.module('myApp',[]);
myApp.controller('listCtrl',function($scope){
   $scope.logchore="motorola";
});


myApp.directive('kid',function(){
	return {
		'restrict':'E',
		scope:{
			title:"@"
		},
		template:'<div >{{title}}</div>'
		
	}
});
在输入框输入数字会绑定到指令模板的title中。

2:再说说Scope的=

   angularjs.html

   

<!doctype html>
<html ng-app='myApp'> 
 <head>   

 </head> 
 <body>     
  
 <div ng-controller="listCtrl">   
    <input type="text"  ng-model="t" />
	 <kid title="t" > //和上面相比,这个直接赋值等于scope域下的t了
	    <p>{{title}}</p>
	    <span>我的angularjs</span>
	</kid>
</div> 
<script type="text/javascript" src="angular.js"></script>
<script type="text/javascript" src="main05.js"></script>
</body></html>
   

main05.js代码如下:

   

var myApp=angular.module('myApp',[]);
myApp.controller('listCtrl',function($scope){
   $scope.logchore="motorola";
});


myApp.directive('kid',function(){
	return {
		'restrict':'E',
		scope:{
			title:"="
		},
		template:'<div >{{title}}</div>'
		
	}
});

3:最后说&,这个是用来方法调用的

    

angularjs.html代码如下:

   

<!doctype html>
<html ng-app='myApp'> 
 <head>   

 </head> 
 <body>     
  
 <div ng-controller="listCtrl">   
      <kid flavor="logchore()" ></kid> //先比=,函数赋值的形式,而logchore函数必须是域scope下声明的函数
</div> 
<script type="text/javascript" src="angular.js"></script>
<script type="text/javascript" src="main05.js"></script>
</body></html>

main05.js代码如下:

var myApp=angular.module('myApp',[]);
myApp.controller('listCtrl',function($scope){
   $scope.logchore=function(){
	    alert('ok');
   };
});


myApp.directive('kid',function(){
	return {
		'restrict':'E',
		scope:{
			flavor:"&"  
		},
		template:'<div ><button ng-click="flavor()"></button></div>'
		
	}
});

如果logchore带有参数,

angularjs.html代码如下:

<!doctype html>
<html ng-app='myApp'> 
 <head>   

 </head> 
 <body>     
  
 <div ng-controller="listCtrl">   

      <kid flavor="logchore(t)" ></kid> 

</div> 
<script type="text/javascript" src="angular.js"></script>
<script type="text/javascript" src="main05.js"></script>
</body></html>

main05.js代码如下:

var myApp=angular.module('myApp',[]);
myApp.controller('listCtrl',function($scope){
   $scope.logchore=function(x){
	    alert(x);
   };
});


myApp.directive('kid',function(){
	return {
		'restrict':'E',
		scope:{
			flavor:"&"
		},
		template:'<div >    <input type="text"  ng-model="v" /> <button ng-click="flavor({t:v})"></button></div>'
		
	}
});


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