JeasyUI treegrid deletes multiple rows in batches

It seems that javascript variable types can also be divided into value types and reference types. In assignment operations, value types are independent of each other. A reference type, just a pointer, they all point to the same object.

Why do you say that?

I know this from jeasyUI’s Treegrid batch deletion of multiple rows.

To delete multiple rows in a Treegrid batch, get the selected rows first:

var rows = _grid.treegrid(‘getSelections’); \

And then iterate over it and delete it

for (var i = 0; i < rows.length; i++) { var id = rows[i].id; _grid.treegrid(‘remove’, id); } \

There’s always some left over.

The reason for this is that rows is a reference type, it refers to those rows, the rows are deleted, the rows.length is reduced by 1, and the loop ends very quickly. This is the same as before in C#, traversing and deleting records in the DataTable.

Select * from ‘rows’ where the id is stored in an array (array is the value type), then iterate over the array and delete:

//var _grid = $("treegridDemo");
var rows = _grid.treegrid('getSelections');
var ids = new Array(a);for (var i = 0; i < rows.length; i++) {
    ids[i] = rows[i].id;
}
for (var i = 0; i < ids.length; i++) {
    _grid.treegrid('remove', ids[i]);
}
_grid.treegrid('reloadFooter');
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