Чекбокс

boolean:      [value = '']
string:   [label = 'checkbox']
string:   [fieldname = 'checkbox']
boolean:  [required = true]
boolean:  [readonly = false]
boolean:  [disabled = false]
boolean:  [valid = true]
string:   [class = '']
string:   [labelClass = "checkbox"]
array of string:  [reactOn = ["onchange", "oninput"]]
function: [onchange]