Jquery insert new row into table at a certain index

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I know how to append or prepend a new row into a table using jquery:

$('#my_table > tbody:last').append(html);

How to I insert the row (given in the html variable) into a specific "row index" i. So if i=3, for instance, the row will be inserted as the 4th row in the table.

10 Answers

Adding on to Nick Craver's answer and also considering the point raised by rossisdead, if scenario exists like one has to append to an empty table, or before a certain row, I have done like this:

var arr = []; //array
if (your condition) {
  arr.push(row.id); //push row's id for eg: to the array
  idx = arr.sort().indexOf(row.id);

  if (idx === 0) {   
    if (arr.length === 1) {  //if array size is only 1 (currently pushed item)
        $("#tableID").append(row);
    }
    else {       //if array size more than 1, but index still 0, meaning inserted row must be the first row
       $("#tableID tr").eq(idx + 1).before(row);
    }   
  }          
  else {     //if index is greater than 0, meaning inserted row to be after specified index row
      $("#tableID tr").eq(idx).after(row);
  }    
}

Hope it helps someone.

To add the right under a specific node(data-tt-id), this worked for me:

var someValue = "blah-id";

$("#tableID > tbody > tr[data-tt-id="' + someValue + '"]').after(row);
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