Can't delete current row of jQuery DataTable using local button

Question

I have a jQuery Datatable and I dynamically add rows. Each row has a cell in which there's a delete button. My problem is that I can't get to delete the rows with the buttons and I can't even manage to target the current row.

Here's my DataTable code :

var tab_presta = $("#tableau_presta").DataTable({
    "searching": false,
    "paging":   false,
    "ordering": false,
    "info":     false,
    responsive: true,
    "language": {
        "emptyTable": "No product added to the contract for the moment."
      }
});

Here is how I create the buttons on each row (on a submit event) :

form2.on('submit', function (event) {

tab_presta.row.add( 
    [            
        '<center><button type="button" id="btn_supp' + (++idCount) + '" onclick="alert(this.parentNode)" class="btn btn-xs btn-block btn-danger confirmation">Delete</button></center>'
    ] 
)
.draw( false );

// here I dynamically add an id to each button based on a variable
$('.btn btn-xs btn-block btn-danger confirmation').each(function() {
        $(this).attr('id', 'suppr' + idCount);
        idCount++;
    });
});

And here is my code for deleting when clicking on each button :

for (j = 0; j <= btn_count; j++) {
    $("#tableau_presta").on("click", btn_supp[j], function(){
        //tab_presta.row($(this).parents('tr')).remove().draw(false);
        var row = $(this).closest("tr");
        console.log(row);
    });
}

As you can see I commented the remove() part because it doesn't work, so I tried to find the closest tr of $(this) (button) , but I don't get the row in the console as a result. It's empty and I don't understand why because the button actually exists and I can get its id when I click on it if I put a onclick"alert(this.id) .

Any idea ?

Answer 1

You don't need to bind the click event inside of a loop. Instead, use a class or an attribute selector . In this case, selecting all elements with an id that ^ starts with btn_supp = [id^=btn_supp] .

 $("#tableau_presta").on("click", "[id^=btn_supp]", function() { $(this).closest("tr").remove(); }); 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <table id="tableau_presta"> <tr> <td> <button type="button" id="btn_supp1" class="btn btn-xs btn-block btn-danger confirmation">Delete</button> </td> </tr> <tr> <td> <button type="button" id="btn_supp2" class="btn btn-xs btn-block btn-danger confirmation">Delete</button> </td> </tr> </table>