How to check if a column has hideable option or not? [closed]

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How do we check if a column has hideable option or not in column menu header in grid panel?

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The menu is built from the column config, thus:

var col_model = grid.getColumnModel();

for (var i = 0, len = col_model.config.length; i < len; i++) {
  var column = col_model.config[i];

  // Access column properties here, such as hidden
}