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Does Antd Table have multiple custom selection?

I am using the Antd Table with the custom selection option that's demoed here.
I was able to get my code to work like the demo, where I click on one item from the dropdown menu and the respective table rows will be selected.
But I would like to be able to select multiple items from the dropdown menu and have all respective rows be selected in the table.
Can somebody please throw some light into this? Thanks very much!

I was able to render a Checkbox component in place of each of the options listed in the dropdown, and use the onChange hook on checking/unchecking to trigger the rowSelection.

jQuery Datatables Dropdown in Table can't Filter

I'm using Datatables based on jQuery.
I have a Datatable which has dropdown inputs within the table to modify the data in the table.
Unfortunately I can't filter for the selected value in the dropdown.
Any ideas on how to achieve that?

Multi-select dropdown menu

I am working on creating a website using node.js and express. I want to add a multi-select dropdown box. I have a Javascript object which contains a variety of properties and would like to populate the dropdown box with all the property values. I would also like to be able to add new options to the dropdown and have them visible without having to refresh the page. Is there someway to accomplish this? Perhaps using JQuery? I would appreciate if someone could provide an example.
I've tried this example, but I would like to have a multi select checkbox for the dropdown. The example requires the user to press ctrl while clicking to select multiple options.
Thanks!

$("#select_id").append("<option value='value'>name</option>");

Making sharepoint List dropdown read-only

In my sharepoint list newform.aspx, I have two cascading dropdown *(Country, Training), where based on the Country, Trainings gets populated. I had achieved this using spservices.
Now for some country users I need to make default country as their own country in dropdown and show its corresponding trainings.
Kindly let me know how can I get this. I'm able to disable dropdown with specific country using jquery. But i want make readonly, because only when the value newform saves to sharepoint list.
Its happen for textbox not for dropdown.

Basically, this has been answered here:
How to make a dropdown readonly using jquery?
A hidden field is the key.

html dropdown menu populated by mysql after selection load another dropdown menu

I'm using PHP to pull from a MySQL table then populate an XML for the javascript to get that information.
Table results example shown here
I want to make a dropdown menu the the hobbienames then when that selection is made another menu to appear with the hsnames that match the hobbiename. obviously if null nothing will appear.

If the first dropdown is not very lengthy, and has a fixed length, then you can retrieve all the possible dropdowns and hide them initially.. On selection of an item from dropdown1 you can then display its corresponding dropdown.
In the other case, if the first dropdown is lengthy, then on its selection, run an AJAX function which will eventually populate the other dropdown.

Here's a sample code which you can use as reference...
http://theitbranch.com/transfer/country.zip