Javascript 如何在自定义指令中使用控制器方法?
一旦从Select using ng options(使用ng选项选择)中选择了值,此时用户将单击startRecording(开始记录),我想显示从控制器工作的progressbar,但我想在用户单击startRecording(开始记录)时在指令控制器中使用该逻辑,我想将值传递给指令或从指令so调用方法Javascript 如何在自定义指令中使用控制器方法?,javascript,angularjs,angular-directive,Javascript,Angularjs,Angular Directive,一旦从Select using ng options(使用ng选项选择)中选择了值,此时用户将单击startRecording(开始记录),我想显示从控制器工作的progressbar,但我想在用户单击startRecording(开始记录)时在指令控制器中使用该逻辑,我想将值传递给指令或从指令so调用方法startRecordingprogressbar可以显示 diactive.js angular.module("App").directive('progressBarCustom',fu
startRecording
progressbar可以显示
diactive.js
angular.module("App").directive('progressBarCustom',function () {
return {
restrict: 'E',
scope:{
message: "=",
fileSize: "=",
fileValue: "="
},
templateUrl: '/view/partials/progressbar.html',
controller: function ($scope) {
var data = $scope.message;
$scope.progressBarFlag = false;
}
});
ctrl.js
$scope.startRecording = function () {
$scope.progressBarFlag = true;
}
main.html
<div class="col-md-3">
<select class="form-control" ng-model="selectedFileSize" ng-options="item as item.value for item in FileSizeOptions" ng-change="onSizeChange()"><option value="">Select</option></select>
</div>
<div class="col-md-2">
<button type="button" class="btn btn-primary" ng-click="startRecording()">Start Recording</button>
</div>
<progress-bar-custom message="event" fileSize="selectedFileSize.size" fileValue="selectedFileSize.value"></progress-bar-custom>
挑选
开始录音
progressbar.html
<uib-progressbar ng-show="progressBarFlag" type="success" class="progress-striped" max="max" animate="true" value="dynamic"><span>{{downloadPercentage}}%</span></uib-progressbar>
{{downloadPercentage}}%
如果使用ng if
,根据需要显示和隐藏进度条怎么样?如果您所做的只是按需显示和隐藏元素,那么在实际指令中添加传递函数似乎是不必要的。向指令和调用范围添加一个链接函数。$parent()访问保存进度条方法的控制器
示例:
angular.module("App").directive('progressBarCustom',function () {
return {
restrict: 'E',
scope:{
message: "=",
fileSize: "=",
fileValue: "="
},
templateUrl: '/view/partials/progressbar.html',
controller: function ($scope) {
var data = $scope.message;
$scope.progressBarFlag = false;
},
link: function(scope, el, attrs) {
el.bind('click', function(event) {
scope.$parent.startRecording();
});
}
});
希望这对您有所帮助您只需将该函数的引用传递到包含的范围中即可
angular.module("App").directive('progressBarCustom',function () {
return {
restrict: 'E',
scope:{
message: "=",
fileSize: "=",
fileValue: "=",
startRecording: "@" //Added code
},
templateUrl: '/view/partials/progressbar.html',
controller: function ($scope) {
var data = $scope.message;
$scope.progressBarFlag = false;
//You can call it like so
$scope.startRecording(); //Added code
}
});
<div class="col-md-3">
<select class="form-control"
ng-model="selectedFileSize"
ng-options="item as item.value for item in FileSizeOptions"
ng-change="onSizeChange()">
<option value="">Select</option>
</select>
</div>
<div class="col-md-2">
<button type="button"
class="btn btn-primary"
ng-click="startRecording()">
Start Recording
</button>
</div>
<!-- Pass in the function here -->
<progress-bar-custom
message="event"
fileSize="selectedFileSize.size"
fileValue="selectedFileSize.value"
start-recording="startRecording()"<!-- Added code --> >
</progress-bar-custom>
angular.module(“App”).directive('progressBarCustom',function(){
返回{
限制:'E',
范围:{
消息:“=”,
文件大小:“=”,
fileValue:“=”,
开始记录:“@”//添加了代码
},
templateUrl:“/view/partials/progressbar.html”,
控制器:功能($scope){
var data=$scope.message;
$scope.progressBarFlag=false;
//你可以这样称呼它
$scope.startRecording();//添加了代码
}
});
挑选
开始录音
可能重复的可能重复,因此我想将$scope.progressBarFlag
设置为true。一旦启动,我将如何在指令中执行该操作记录invokedscope。$parent().progressBarFlag=true;…在链接函数中执行此逻辑。如果选择执行此操作,可以删除控制器函数