Javascript 指令不';t在选择更改事件时触发
我有以下HTML代码:Javascript 指令不';t在选择更改事件时触发,javascript,angularjs,angularjs-directive,Javascript,Angularjs,Angularjs Directive,我有以下HTML代码: <select class="state ng-scope ng-pristine ng-invalid ng-invalid-required"> <option value="" selected="selected" class="">Seleccione un estado</option> </select> 为什么指令没有被触发?问题是我没有监听更改事件。正确的代码是: link: function(s
<select class="state ng-scope ng-pristine ng-invalid ng-invalid-required">
<option value="" selected="selected" class="">Seleccione un estado</option>
</select>
为什么指令没有被触发?问题是我没有监听
更改事件。正确的代码是:
link: function(scope, element, attrs) {
console.log(element);
...
}
我会在你的选择中添加一个ng型号,然后在你的指令中添加一个手表。将变量传递到指令中并输出所需的结果。伪代码:
<select ng-model="myList" class="ng-scope ng-pristine ng-invalid ng-invalid-required">
<option value="" selected="selected" class="">Seleccione un estado</option>
</select>
<span state selectedItem="myList"></span>
什么是应用程序
?指令定义很好,应该可以用。不过,我发现了我的错误所在,我会回答我自己的问题
<select ng-model="myList" class="ng-scope ng-pristine ng-invalid ng-invalid-required">
<option value="" selected="selected" class="">Seleccione un estado</option>
</select>
<span state selectedItem="myList"></span>
directive('state', ['$http', function($http){
return {
restrict: 'A',
scope: {
myList: '=myList'
},
link: function(scope, element, attrs) {
scope.$watch('myList', function (newValue, oldValue) {
console.log(changed);
}
}
}
}])