Why order array shows different values than array[0][0], array[0][1].

Why order array shows different values than array[0][0], array[0][1].

dobrzycdobrzyc Posts: 5Questions: 2Answers: 0
edited April 16 in Free community support

Why the values are different?
let tableOrder = $('#id_main_table').DataTable().order();

then
tableOrder[0][0]
tableOrder[0][1]

For example:
console.log(tableOrder) shows: [5, 'asc',...]
console.log(tableOrder[0][0]) shows 32
console.log(tableOrder[0][1]) shows ''

What is going on? Is this an error?

I'm using dataTables 2.0.3, FixedHeader 4.0.1, Jquery 3.7.1 and Bootstrap 5.3.3

Answers

  • allanallan Posts: 61,970Questions: 1Answers: 10,160 Site admin

    No idea! I've just tried it here and it works as expected. Perhaps you can update the test case to show the issue please?

    Allan

  • dobrzycdobrzyc Posts: 5Questions: 2Answers: 0

    My code:

    $("span[class='dt-column-order'],span[class='dt-column-title']").on( "click", function() {
    var order = $('#id_main_table').DataTable().order();
    console.log(order);
    console.log(order[0][0]);
    console.log(order[0][1]);
    });

    Thank you.

  • kthorngrenkthorngren Posts: 20,420Questions: 26Answers: 4,794

    The code Allan used in his test case is the same as the code you posted twice. What Allan is asking for is a running test case showing the issue. Debugging just your code snippet is impossible. Please provide a link to a test case that shows the issue.
    https://datatables.net/manual/tech-notes/10#How-to-provide-a-test-case

    Kevin

  • allanallan Posts: 61,970Questions: 1Answers: 10,160 Site admin

    If you could update the test case to show the issue please, that would let me see the problem and help resolve it.

    Allan

  • dobrzycdobrzyc Posts: 5Questions: 2Answers: 0

    Sorry, but I don't know how to do it. :(

  • allanallan Posts: 61,970Questions: 1Answers: 10,160 Site admin

    I don't know how to see the issue you reported, since the example I provided appears to work just fine.

    Please link to a page showing the issue so I can offer some help.

    Allan

  • kthorngrenkthorngren Posts: 20,420Questions: 26Answers: 4,794

    I built a test case for you with FixedHeader, etc. Used the [Download Builder]https://datatables.net/download/index) to get the proper library files and pasted them into the HTML tab, replacing the existing script and link tags:
    https://live.datatables.net/xusuviye/2/edit

    It includes your click event. Here is the result:

    There is a slight delay between clicking the header and resorting the table. The code in the click event executes before sorting is completed. I added console.log(JSON.stringify( order )); to the second line of output. This shows the value at the time the code is executed. What you see in the first line is the change to the order object after the output. This is behavior from the browser.

    I think what you want is to use the order event. Updated the test case using the order event:
    https://live.datatables.net/xudofeqe/1/edit

    I believe this is the behavior you are after.

    Kevin

  • allanallan Posts: 61,970Questions: 1Answers: 10,160 Site admin

    A click on the header uses a small setTimeout to allow the processing indicator to show. That might well be what you are seeing since your own click listener isn't accounting for that.

    The issue is that the values inside the object are updated, but the scalars shown on the console can't ben updated and are written synchronously.

    I think Kevin has hit upon exactly what is happening (as usual - nice one Kevin!).

    Allan

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