动态设置表单元素的编辑属性
将表单元素禁用
txtOwnerPart.setDisabled(true); txtOwnerPart.removeClass('x-form-text'); txtOwnerPart.addClass('form_field_readonly');
将表单元素启用
txtOwnerPart.setDisabled(false); txtOwnerPart.removeClass('form_field_readonly'); txtOwnerPart.addClass('x-form-text');