我有一个运行angularJS的页面。有时,当我打开文档时,有时只显示需要显示的数据。当我不断尝试刷新页面时,它几乎是随机的:有时会出现内容,有时它不会。
运行此代码的代码部分如下所示:
<div class="row">
<div class="col-md-12" ng-repeat="(observer,hosts2) in bugDuration">
{{observer}}
<div class="row">
<div class="col-md-3" ng-repeat="(host, bugs2) in hosts2"> {{host}}
<div ng-repeat="(bug, duration) in bugs2">
{{bug}} for {{duration}} seconds.
</div>
</div>
</div>
</div>
</div>
正如您所看到的,它正在使用ng-repeat,我最好的猜测是,当此代码运行时,ng-repeat对象(例如bugDuration
)为空,因此它们都不会运行。
初始化所有这些变量的脚本位于我的文档之后。我是否应该在控制器中执行某些操作,以便可以刷新变量并且每次都可以显示内容?
修改
以下是初始化bugDuration的代码:
bugDuration = {};
bugTracker = {};
$.getJSON('../java_output/bugs.json', function (data) {
for ( var observer in data ) {
bugDuration[observer] = {};
for (var host in data[observer]) {
bugDuration[observer][host] = {};
for (var bug in data[observer][host]) {
bugDuration[observer][host][bug] = data[observer][host][bug].duration;
}
}
}
console.log (bugDuration);
});
$.getJSON('../java_output/bug_summary.json', function (data) {
var numObservers = data.numObservers;
delete data['numObservers'];
JSONbugsList = data;
var bugTracker = {};
for (var observer = 1; observer <= numObservers; observer++) {
observers.push(observer);
observerKeys = Object.keys(data);
// observerKeys.splice(observerKeys.indexOf('numObservers'));
for (var host in data["observer" + observer]) {
if (hosts.indexOf(host) == -1) {
hosts.push(host);
}
hostKeys = Object.keys(data["observer" + observer]);
for (var bug in data["observer" + observer][host]) {
if (bugs.indexOf(bug) == -1) {
bugs.push(bug);
}
for (var i in data["observer" + observer][host][bug]) {
bugTracker[bug] = true;
var dateVar = data["observer" + observer][host][bug][i];
var intoList = {"observer":observer, "host":host, "bug":bug, "start":(new Date(1000*dateVar.start)), "end":(dateVar.end==null?' the end.':(new Date(1000*dateVar.end)))}
}
}
}
}
// Removed unimportant stuff here//
$scope.$apply();
$scope.hostsS = hosts;
$scope.bugsS = bugs;
$scope.observersS = observers;
$scope.JSONbugsList = JSONbugsList;
$scope.hostKeys = hostKeys;
$scope.observerKeys = observerKeys;
$scope.start = 'start';
$scope.end = 'end';
$scope.bugDuration = bugDuration;
$scope.$apply();
答案 0 :(得分:1)
其中最大的问题是$scope.$apply()
需要在$scope
上设置数据后发生$scope.$apply()
。由于$ .getJSON是异步的,因此在触发回调时,底部的$.getJSON('../java_output/bug_summary.json', function (data) {
/*do stuff outside of angular context when the ASYNC callback fires*/
$scope.stuff = data;
/*then call $scope.$apply()*/
$scope.$apply();
});
行将被触发。
{{1}}