angular指令中scope的绑定策略
scope的作用是让父与子的scope可以进行传递数据，它的绑定一般分为三种情况:
@ ：把当前属性作为字符串传递，还可以绑定来自外层scope上的值，在属性中插入{{}}即可；
=： 与父scope中的属性进行双向绑定；
&：传递一个来自父scope中的函数，稍后调用。
'@' 的使用
<person name="{{zhangsan}}"></person>
<person name="{{lisi}}"></person>
js部分：
var app = angular.module('app',[]);
app.controller('apCtrl',['$scope',function($scope){
$scope.zhangsan = '张三';
$scope.lisi = '李四';
$scope.greet = function(name,word){
console.log(name +'----'+word)
};
}])
app.directive('person',function(){
return {
replace: true,
scope: {
nameself:'@name' //此处的name是<person name="{{lisi}}"></person>的name,也就是{{lisi}}
},
restrict:'E',
template:'<div>姓名：{{nameself}} <input type="text" ng-model="nameself"></div>'
}
})
'=' 的使用
{{zhangsan}}
{{lisi}}
<person name="zhangsan"></person>
<person name="lisi"></person>
js部分：
var app = angular.module('app',[]);
app.controller('apCtrl',['$scope',function($scope){
$scope.zhangsan = '张三';
$scope.lisi = '李四';
$scope.greet = function(name,word){
console.log(name +'----'+word)
};
}])
app.directive('person',function(){
return {
replace: true,
scope: {
nameself:'=name' //此处的name父scope下的属性，实现双向绑定，子变父也变
},
restrict:'E',
template:'<div>姓名：{{nameself}} <input type="text" ng-model="nameself"></div>'
}
})
'&' 的使用
{{zhangsan}}
{{lisi}}
<person name="zhangsan" greet="greet(name,word)"></person>
<person name="lisi" greet="greet(name,word)"></person>
var app = angular.module('app',[]);
app.controller('apCtrl',['$scope',function($scope){
$scope.zhangsan = '张三';
$scope.lisi = '李四';
$scope.greet = function(name,word){
console.log(name +'----'+word)
};
}])
app.directive('person',function(){
return {
replace: true,
scope: {
nameself:'=name',
greetself:'&greet'
},
restrict:'E',
template:'<div>姓名：{{nameself}} <input type="text" ng-model="word"><div ng-click="greetself({name: nameself,word:word})">click</div></div>'
}
})
