[Solved] Best way to get row index in javascript

[staron]

Hi,
I'm trying to get a hold of the rowindex in javascript. I'm currently getting it by using code found in another post in this forum. However; when the grid has lots of rows, the code becomes very slow and sometimes even freezes the browser.
My current code:

function RowClick(sender, eventArgs) {
    try {

        sender.get_masterTableView().get_dataItems();
        var selectedItem = sender.get_masterTableView().get_selectedItems()[0];
        var index = selectedItem._itemIndexHierarchical;
...

Is there a better, more optimalized way to do this?

[Daniel]

Hello Staron,

To get the Item index of a first selected row:

....
{
    var index = sender.get_masterTableView().get_selectedItems()[0]._itemIndexHierarchical;
}

It would be better to move the get_dataItems() method to GridCreated event.

function GridCreated(sender, args)
{
    sender.get_masterTableView().get_dataItems();
}

Let me know if I missed something.

Regards,
Daniel
the Telerik team

Check out Telerik Trainer, the state of the art learning tool for Telerik products.

[staron]

Thanks for the reply,
Problem is that sender.get_masterTableView().get_dataItems kills performance on large datasets.

[Daniel]

Hello Staron,

Thank you for the clarification.

For such scenarios you may extract the item index from the ID as shown below:

var selected = radGrid.get_selectedItems()[0];
var ids = selected.get_element().id.split("__");
alert("Selected index: " + ids[ids.length - 1]);

I hope this helps.

Kind regards,
Daniel
the Telerik team

Check out Telerik Trainer, the state of the art learning tool for Telerik products.