escape = function escape(s) {
              return s.replace(/[-/\\^$*+?.()|[\]{}]/g, '\\$&');
            }
Removes any of the specified characters (or "tokens").

 If no column is specified, then the values in all columns and
 rows are processed. A specific column may be referenced by
 either its ID or title.

 @method  removeTokens
 @param  {String} chars  String listing characters to be removed
 @param  {String|Integer} [column] Column ID (number)
                                  or name (string)

@example
<div class="norender"><code>
function setup() {
  let table = new p5.Table();

  table.addColumn('name');
  table.addColumn('type');

  let newRow = table.addRow();
  newRow.setString('name', '   $Lion  ,');
  newRow.setString('type', ',,,Mammal');

  newRow = table.addRow();
  newRow.setString('name', '$Snake  ');
  newRow.setString('type', ',,,Reptile');

  table.removeTokens(',$ ');
  print(table.getArray());
}

// prints:
//  0  "Lion"   "Mamal"
//  1  "Snake"  "Reptile"
</code></div>