Question

我有这个HTML

<ion-item ng-repeat="item in ::itemsToShow = extensionItems | orderBy:'distance' " class="entry" ng-class="{'alt-background': $index % 2 == 1}" ng-click="itemDetail(item)">
    ...details...
</ion-item>

我无法找出添加track by:item._id的正确方法我总是收到此错误：

语法错误：令牌跟踪＆＃39;是表达式第30列的意外标记[itemsToShow = extensionItems track by：_id | ...

我试过了：

<ion-item ng-repeat="item in ::itemsToShow = extensionItems track by:item._id | orderBy:'distance' " class="entry" ng-class="{'alt-background': $index % 2 == 1}" ng-click="itemDetail(item)">

<ion-item ng-repeat="item in ::itemsToShow = extensionItems track by:_id | orderBy:'distance' " class="entry" ng-class="{'alt-background': $index % 2 == 1}" ng-click="itemDetail(item)">

<ion-item ng-repeat="item in ::itemsToShow = extensionItems  | orderBy:'distance' track by:_id" class="entry" ng-class="{'alt-background': $index % 2 == 1}" ng-click="itemDetail(item)">

<ion-item ng-repeat="item in ::itemsToShow track by:_id = extensionItems  | orderBy:'distance' " class="entry" ng-class="{'alt-background': $index % 2 == 1}" ng-click="itemDetail(item)">

还尝试使用_id和item._id并且我总是得到相同的错误（当然是不同的列）。我应该如何或在哪里写track by？

修改：Angular版本1.4.3

编辑2 ：Json数据具有此结构

_id: "000000426"
_rev: "1-5003008fcf25b8f130233b944bb761c9"
someText: "<p class="bodytext ">Something for you.</p>"
name : "You-Shop"
homepage : "http://www.youshop.com"
id: 426

Answer 1

您错过了track by必须不后跟冒号（:）...

的事实

Answer 2

`track by` MUST be the final statement in a ng-repeat.

如何正确添加＆＃34;跟踪＆＃34;到ngRepeat

2 个答案: