Why var is not updated?

Question

I have the following code in jQuery

var fila;
$(document).ready(function(){
   acciones_filas('tbl_producto', 'acciones-activos', productoTable);
   $("#id_producto").val(fila.nProCodigo);
}

function acciones_filas(tabla_id, acciones_id, tabla_objeto, fila)
{
    //click on a row
    $("#"+tabla_id+" tbody").on('click', 'tr', function(){
        $("#"+acciones_id+" .btn").removeAttr('disabled');
        if ( $(this).hasClass('row_selected') ) {
            $(this).removeClass('row_selected');
        }
        else {
            tabla_objeto.$('tr.row_selected').removeClass('row_selected');
            $(this).addClass('row_selected');
        }

        if($('#'+tabla_id+' .row_selected').length < 1)
            $("#"+acciones_id+" button").attr('disabled', 'disabled');

        fila = tabla_objeto.fnGetData(this); 
    });
}

When I click on a row of a table the variable fila must save the value of the selected row, but when I print the result I get and undefined

Don't include `fila` in the argument list of `acciones_filas`, it will become a local variable, and shadow the global `fila` within the function. — Teemu, Jan 26 '16 at 18:09
@laviku Nope, it just means the problem is fixed and an answer should be accepted, I would also suggest to undo the edit to the main post so other users with a similar problem can find it. — Le Woogush, Jan 26 '16 at 19:05

score 2 · Accepted Answer · edited May 23 '17 at 12:15

2

On you context, you have two vars fila. One inside the function, other outside. Javascript will try to use the one that is closer. On that case, the argument of the function acciones_filas.

Give a look on point 8 of that link: What is the scope of variables in JavaScript?

edited May 23 '17 at 12:15

Community

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answered Jan 26 '16 at 18:09

anolsi

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Why var is not updated?

1 Answers1