Javascript 角度表达式的增量/减量（id生成）
我想在嵌套ng重复中执行增量，如下所示：Javascript 角度表达式的增量/减量（id生成）,javascript,angularjs,auto-increment,Javascript,Angularjs,Auto Increment,我想在嵌套ng重复中执行增量，如下所示： <div ng-repeat="arr in extension.providers"> <div id="pos{{++providerId}}" ng-repeat="provider in arr track by provider.id"> </div> </div> 但我有一个错误 Error: [$parse:syntax] Syntax Error:
<div ng-repeat="arr in extension.providers">
<div id="pos{{++providerId}}"
ng-repeat="provider in arr track by provider.id">
</div>
</div>
Error: [$parse:syntax] Syntax Error: Token '+' not a primary expression at column 11 of the expression ['pos' + (providerId++)] starting at [+providerId)].
如何在我的网页上生成id 如果您使用
ng repeatdiv$indexng repeat$index<div ng-repeat="arr in extension.providers">
<div ng-repeat="provider in arr track by provider.id" id="pos{{$parent.$index}}">
</div>
</div>
$index如果您使用
ng repeatdiv$indexng repeat$index<div ng-repeat="arr in extension.providers">
<div ng-repeat="provider in arr track by provider.id" id="pos{{$parent.$index}}">
</div>
</div>
$index如果您使用
ng repeatdiv$indexng repeat$index<div ng-repeat="arr in extension.providers">
<div ng-repeat="provider in arr track by provider.id" id="pos{{$parent.$index}}">
</div>
</div>
$index如果您使用
ng repeatdiv$indexng repeat$index<div ng-repeat="arr in extension.providers">
<div ng-repeat="provider in arr track by provider.id" id="pos{{$parent.$index}}">
</div>
</div>
$index我的问题的答案是：
<div ng-repeat="arr in extension.providers" ng-init="topIndex = $index">
<div id="pos{{topIndex.toString() + $index.toString()}}"
ng-repeat="provider in arr track by provider.id">
</div>
</div>
感谢并感谢他们的帮助。我的问题的答案是：
<div ng-repeat="arr in extension.providers" ng-init="topIndex = $index">
<div id="pos{{topIndex.toString() + $index.toString()}}"
ng-repeat="provider in arr track by provider.id">
</div>
</div>
感谢并感谢他们的帮助。我的问题的答案是：
<div ng-repeat="arr in extension.providers" ng-init="topIndex = $index">
<div id="pos{{topIndex.toString() + $index.toString()}}"
ng-repeat="provider in arr track by provider.id">
</div>
</div>
感谢并感谢他们的帮助。我的问题的答案是：
<div ng-repeat="arr in extension.providers" ng-init="topIndex = $index">
<div id="pos{{topIndex.toString() + $index.toString()}}"
ng-repeat="provider in arr track by provider.id">
</div>
</div>
感谢并感谢他们的帮助。不幸的是，它不起作用了。我在所有元素上都有id=“pos1”。@Salasar您是在ng重复中使用它还是在嵌套的ng重复中使用它？那么我不能使用$index。您的答案没有将更改的值保存在变量中，那么providerId如何才能唯一？@Salasar如果需要适当的帮助，您必须向我们展示更多的代码。@Salasar对于嵌套的
ngrepeatngrepeatng init=“topinex=$index”ngrepeatngrepeatng init=“topinex=$index”ngrepeatngrepeatng init=“topinex=$index”ngrepeatngrepeatng init=“topinex=$index”