如何使用angular删除数组的指定索引内的元素

Question

I need to remove some elements inside an array with specified index. I am trying to use slice function for it but it is giving me undefined error.

This is my controller code:

if($scope.startColm<$scope.endColm){
//Suppose here startColm value is 1 and endColm value is 4

  for(var j=0;j<rowCellData.length;j++){
  //rowCellData is an array. Attaching its image for reference

    for(var k=$scope.startColm;k<($scope.endColm-$scope.startColm);k++){

      var cellData=rowCellData[j].slice($scope.startColm,$scope.endColm)
      //Here i want to remove data inside rowCellData from specified index.
    }
  }
}

rowCellData consists data like this:

Inside each index there is some data which I need to fetch based on the specified startColm and endColm value. Like here i want the data from 1st to 4th position for all the index of rowCellData.

Please suggest how to remove data inside array elements.

Answer 1

You want the 'splice' method, not the 'slice' method. However, since you have objects inside the main array and not other arrays, you could use delete to remove the items:

for (var i = $scope.startColm; i <= $scope.endColm; i++) { 
  delete rowCellData[j][i] 
}