AngularJS 使用ng-repeat报错 [ngRepeat:dupes]

AngularJS 使用ng-repeat报错
[ngRepeat:dupes] Duplicates in a repeater are not allowed. Use "track by" expression to specify uniq

ng-repeat报错

 <div ng-init="words = ["高校","高校","高校"]" ng-repeat="word in words"> {{word}} </div>

[ngRepeat:dupes] Duplicates in a repeater are not allowed. Use "track by" expression to specify unique keys

发现是因为相同的内容重复引起，解决方案

<div ng-init="words = ["高校","高校","高校"]" ng-repeat="word in words track by $index"> {{word}} </div>

在ng-repeat后面加上

track by $index

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