functions.js

valID = $('#idhiddencurso').val()
var tabla_curso_est = $('#tabla_curso_est').DataTable( {
  destroy: true,

  ajax: {
    url: 'crud/crud_aula.php',
    type: 'post',
    dataType:'json',
    data:{opcion:opcion,valID:valID},
    dataSrc:'',
},


columns: [
  {"data": "id"},
  {"data": "estudiantes"},
  {"data": "curso"},
  {"data": "estado"},



 ],

language:{
  url:'datatables/spanish.json',

},
dom: 'Bfrtip',
buttons:[
  {
    extend:    'copy',
    text:      '<i class="fas fa-copy"></i> ',
    titleAttr: 'Copiar Todo',


  },
  {
    extend:    'excelHtml5',
    text:      '<i class="fas fa-file-excel"></i> ',
    titleAttr: 'Exportar a Excel',
    className: 'btn btn-success'
  },
  {
    extend:    'pdfHtml5',
    text:      '<i class="fas fa-file-pdf"></i> ',
    titleAttr: 'Exportar a PDF',
    className: 'btn btn-danger'
  },
  {
    extend:    'print',
    text:      '<i class="fa fa-print"></i> ',
    titleAttr: 'Imprimir',
    className: 'btn btn-info'
  },
]

} );