The component can be restricted on a page, by setting enabled value as false which will disable the component completely from all user interactions including in form post action.
<divclass="innerwrap"><span>Disabled DateTimePicker:</span><ejs-datetimepickerid="disable"width="220px"[enabled]=falsevalue="1/1/2019 1:30 PM"></ejs-datetimepicker></div><divclass="innerwrap"><span>DateTimePicker with Placeholder:</span><ejs-datetimepickerid="placeholder"width="220px"placeholder="Enter a date and time"></ejs-datetimepicker></div><divclass="innerwrap"><span>DateTimePicker in readonly mode:</span><ejs-datetimepickerid="readonly"width="220px"readonly=truevalue="1/1/2019 1:30 PM"></ejs-datetimepicker></div>