我是刚进入AngularJS的Salesforce开发人员。
我的问题是关于这段代码：Unknown watcher。
我使用一个很棒的片段来查找所选DOM元素的上下文中的观察者：
（我不得不删除此链接，因为我无法发布超过2个链接）
如果您在控制台中看到突出显示的＆＃39; tr＆＃39; ，则它有3个关联的观察者，但＆＃39; tr＆＃39; 只有一个单个与之关联的Angular表达式 - ＆gt; showTheRow（），而所有其他表达式都使用＆＃39; ::＆＃39;进行单向绑定。运营商。为什么会这样？我错过了什么吗？
以下是代码段：
<tr ng-repeat="acc in ::setting_Records.dataWrapperMap['Dealer'] track by acc.account.Id" ng-show="showTheRow(acc.account)" class="dealerRow">
<td class="filterable-cell">{{::acc.account.Name}} - {{::acc.account.Location__c}} - {{::acc.account.Unit_Name__c}}</td>
<td class="filterable-cell" ng-class="::acc.pastCompVisits.indexOf('0') == 0 ? 'redClass' : 'greenClass' ">{{::acc.pastCompVisits}}</td>
<td ng-repeat="set in ::acc.dayMon track by set.customerID+set.dayNumber" ng-class="::set.typeCol" class="filterable-cell">
<div class="multipleEvents" ng-if="::(set.eventList.length > 1)">
<apex:image value="{!URLFOR($Resource.MultiUser_Icon)}" styleClass="multiUserIcon" html-ng-click="showPopup(set)"/>
<div class="eventDetailTooltipStyle" ng-show="evaluatePopup(set)">
<div ng-repeat="event in ::set.eventList track by event.event.Id">
<table style="width: 100%;">
<tr>
<td>
{{::$index + 1}}
</td>
<td>
Time:
</td>
<td>
{{::event.event["StartDateTime"] | date: "hh a"}} - {{::event.event["EndDateTime"] | date: "hh a"}}
</td>
<td ng-if="($index == 0)" align="right" ng-click="closePopup(set)">
Close
</td>
<td ng-if="($index != 0)">
</td>
</tr>
<tr>
<td>
</td>
<td>
Subject:
</td>
<td>
{{::event.event["Subject"]}}
</td>
<td>
</td>
</tr>
<tr>
<td>
</td>
<td>
Contact Person:
</td>
<td>
{{::event.event["Who"]["Name"]}}
</td>
<td>
</td>
</tr>
<tr>
<td>
</td>
<td once-style="{'background-color': SAColourMapping[event.event['Owner']['Name']]}" style="border-top-left-radius: 4px;border-bottom-left-radius: 4px;">
Assigned To:
</td>
<td once-style="{'background-color': SAColourMapping[event.event['Owner']['Name']]}" style="border-top-right-radius: 4px;border-bottom-right-radius: 4px;">
{{::event.event["Owner"]["Name"]}}
</td>
<td>
</td>
</tr>
<tr>
<td>
</td>
<td style="padding-top: 7px;">
<div class="round" ng-if="event.event.OwnerId == scopedUser.Id">
<input type="checkbox" once-id="acc.account.Id + '-' + 'colouredcheckbox-' + set.dayNumber + '-' + event.event.Id" ng-disabled="::(set.typeCol == 'Holiday' || set.readOnlySt)" ng-checked="true"/>
<label ng-attr-for="{{::(acc.account.Id + '-' + 'colouredcheckbox-' + set.dayNumber + '-' + event.event.Id)}}" once-style="{'background-color': SAColourMapping[(event.event.Owner.Name)]}" ng-class="::{'disabledCheckboxClass': set.typeCol == 'Holiday' || set.readOnlySt, 'enabledCheckboxClass' : set.typeCol != 'Holiday' && !set.readOnlySt}" ></label>
<span class="ahevent" ng-if="::(!event.event.WhatId.startsWith('a02'))">AH</span>
</div>
<div class="round" ng-if="event.event.OwnerId != scopedUser.Id">
<input type="checkbox" once-id="acc.account.Id + '-' + 'colouredcheckbox-' + set.dayNumber + '-' + event.event.Id" ng-disabled="::(set.typeCol == 'Holiday' || set.readOnlySt)" ng-checked="false"/>
<label ng-attr-for="{{::(acc.account.Id + '-' + 'colouredcheckbox-' + set.dayNumber + '-' + event.event.Id)}}" once-style="{'background-color': SAColourMapping[(event.event.Owner.Name)]}" ng-class="::{'disabledCheckboxClass': set.typeCol == 'Holiday' || set.readOnlySt, 'enabledCheckboxClass' : set.typeCol != 'Holiday' && !set.readOnlySt}"></label>
<span class="ahevent" ng-if="::(!event.event.WhatId.startsWith('a02'))">AH</span>
</div>
</td>
<td>
</td>
<td>
</td>
</tr>
</table>
</div>
</div>
</div>
<div class="round" ng-class="::{'adjustCheckboxClass': set.dayNumber >=1 && set.dayNumber <= 9, '' : set.dayNumber <1 || set.dayNumber > 9}" ng-if="::(set.eventList.length == 1 && set.eventList[0].event.OwnerId == scopedUser.Id)">
<input type="checkbox" once-id="acc.account.Id + '-' + 'colouredcheckbox-' + set.dayNumber" ng-disabled="::(set.typeCol == 'Holiday' || set.readOnlySt)" ng-checked="true" />
<label ng-attr-for="{{::(acc.account.Id + '-' + 'colouredcheckbox-' + set.dayNumber)}}" once-style="{'background-color': SAColourMapping[(set.eventList[0].event.Owner.Name)]}" ng-class="::{'disabledCheckboxClass': set.typeCol == 'Holiday' || set.readOnlySt, 'enabledCheckboxClass' : set.typeCol != 'Holiday' && !set.readOnlySt}" ></label>
<span class="ahevent" ng-if="::(!set.eventList[0].event.WhatId.startsWith('a02'))">AH</span>
</div>
<div class="round" ng-class="::{'adjustCheckboxClass': set.dayNumber >=1 && set.dayNumber <= 9, '' : set.dayNumber <1 || set.dayNumber > 9}" ng-if="::(set.eventList.length == 1 && set.eventList[0].event.OwnerId != scopedUser.Id)">
<input type="checkbox" once-id="acc.account.Id + '-' + 'colouredcheckbox-' + set.dayNumber" ng-disabled="::(set.typeCol == 'Holiday' || set.readOnlySt)" ng-checked="false" />
<label ng-attr-for="{{::(acc.account.Id + '-' + 'colouredcheckbox-' + set.dayNumber)}}" once-style="{'background-color': SAColourMapping[(set.eventList[0].event.Owner.Name)]}" ng-class="::{'disabledCheckboxClass': set.typeCol == 'Holiday' || set.readOnlySt, 'enabledCheckboxClass' : set.typeCol != 'Holiday' && !set.readOnlySt}"></label>
<span class="ahevent" ng-if="::(!set.eventList[0].event.WhatId.startsWith('a02'))">AH</span>
</div>
<div class="round" ng-class="::{'adjustCheckboxClass': set.dayNumber >=1 && set.dayNumber <= 9, '' : set.dayNumber <1 || set.dayNumber > 9}" ng-if="::(set.eventList.length == 0)">
<input type="checkbox" once-id="acc.account.Id + '-' + 'greycheckbox-' + set.dayNumber" ng-disabled="::(set.typeCol == 'Holiday' || set.readOnlySt)" ng-checked="false" />
<label ng-attr-for="{{::(acc.account.Id + '-' + 'greycheckbox-' + set.dayNumber)}}" ng-class="::{'disabledCheckboxClass': set.typeCol == 'Holiday' || set.readOnlySt, 'enabledCheckboxClass' : set.typeCol != 'Holiday' && !set.readOnlySt}"></label>
</div>
</td>
</tr>
更新的：
调试继续进行，我遇到了另一个Snippet，它将观察者的数量作为属性添加到每个元素：Watcher probe。这显示了＆＃39; tr＆＃39;元素本身有2个相关的未知观察者（而不是任何子元素）。所以，我想我们必须弄清楚的是为什么＆＃39; tr＆＃39;有两个额外的观察者。
