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我想從控制器（或服務）更新任何第二個html值，但我不明白爲什麼$ watch無法正常工作。爲什麼當更新fn被稱爲$ watch時看不到更改？如何在AngularJS中更新控制器的html值？
HTML：
<body ng-app="app">
<div ng-controller="BitWatch as bw">
<p>{{bw.watch.hours}}</p>
<p>{{bw.watch.mins}}</p>
<p>{{bw.watch.secs}}</p>
</div>
</body>
JS：
angular.module("app", [])
.controller("BitWatch", ["$scope", BitWatch])
.service("bitTime", bitTime);
function BitWatch($scope){
var self = this;
self.watch = new bitTime();
$scope.secs = self.watch.secs;
setInterval(function(){ self.watch.update(); $scope.secs = self.watch.secs; console.log(self.watch.secs, $scope.secs);}, 3000);
$scope.$watch("secs", function(){ self.watch.update(); $scope.secs = self.watch.secs; console.log("chaged", self.watch.secs, $scope.secs); });
}
function bitTime(){
var date = new Date();
var self = this;
var hours = date.getHours().toString(2);
self.hours = hours.length<4 ? "0000".substr(hours.length)+hours : hours;
var mins = date.getMinutes().toString(2);
self.mins = mins.length<6 ? "000000".substr(mins.length)+mins : mins;
var secs = date.getSeconds().toString(2);
self.secs = secs.length<6 ? "000000".substr(secs.length)+secs : secs;
self.update = function(){
var date_updated = new Date();
hours = date_updated.getHours().toString(2);
self.hours = hours.length<4 ? "0000".substr(hours.length)+hours : hours;
var mins = date_updated.getMinutes().toString(2);
self.mins = mins.length<6 ? "000000".substr(mins.length)+mins : mins;
var secs = date_updated.getSeconds().toString(2);
self.secs = secs.length<6 ? "000000".substr(secs.length)+secs : secs;
}
}
你能幫我弄清楚如何使用它嗎？ – Donovant 2014-12-07 01:45:29
好，完成了，感謝隊友！ – Donovant 2014-12-07 01:55:02
沒問題！樂意效勞。 – gsalisi 2014-12-07 02:34:53