javascript 从 angularJS 的内部回调更新 $scope
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Update $scope from inside callback in angularJS
提问by fmtoffolo
I have this controller and I would like to update the $scope.progressfrom within the function callback. I tried using $rootScopeand $scope.apply()but I can't get it to work.
Is there something I'm missing?
我有这个控制器，我想$scope.progress从函数回调中更新它。我尝试使用$rootScopeand$scope.apply()但我无法让它工作。有什么我想念的吗？
progressupdate is a variable returned by the event. the code is not exactly like this. I made it super simple here to show the structure.
progressupdate 是事件返回的变量。代码并不完全像这样。我在这里非常简单地展示了结构。
app.controller('player', function($scope) {
var show = function(url) {
function(err, showOK) {
if (err) {
console.log(err);
} else {
showOK.on('listening', function(){
$scope.progress = progressupdate;
});
}
});
}
show(url);
});
Am I running that function incorrectly inside the controller? Should I use something like this?
我是否在控制器内错误地运行了该功能？我应该使用这样的东西吗？
$scope.show = function(url)...etc
回答by Iqbal Fauzi
I don't see the $applyfunction on above script, and progressupdate. Try $applyafter set, or set it inside $apply:
我没有$apply在上面的脚本和progressupdate 上看到函数。$apply设置后尝试，或将其设置在里面$apply：
showOk.on('listening', function(){
$scope.$apply(function(){
$scope.progress = progressupdate;
});
});
or
或者
showOk.on('listening', function(){
$scope.progress = progressupdate;
$scope.$apply();
});
The first method is recommended.
推荐第一种方法。
