Angular $index gets the previous data of ng-repeat

<div ng-repeat=<span style="color: #800000">"</span><span style="color: #800000">item in dataList</span><span style="color: #800000">"</span> ng-click=<span style="color: #800000">"</span><span style="color: #800000">func($index,$index-1)</span><span style="color: #800000">"</span>></div>

$scope.func =<span style="color: #000000"> function(thisIndex,preIndex){
  </span><span style="color: #0000ff">var</span> thisIndexDataName = $scope.dataList[thisIndex].dataName;<span style="color: #008000">//</span><span style="color: #008000">当前这条数据对应dataName</span>
  <span style="color: #0000ff">var</span> preIndexDataName = $scope.dataList[preIndex].dataName;<span style="color: #008000">//</span><span style="color: #008000">上一条数据里对应的dataName</span>
}

 

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