The HTML DOM Input DatetimeLocal required property determines whether Input DatetimeLocal is compulsory to set or not.
Syntax
Following is the syntax −
- Returning boolean value - true/false
inputDatetimeLocalObject.required
- Setting required to booleanValue
inputDatetimeLocalObject.required = booleanValue
Boolean Values
Here, “booleanValue” can be the following −
booleanValue | Details |
---|---|
true | It is compulsory to set the datetimeLocal field to submit form. |
false | It is the default value and to set datetimeLocal field is not compulsory. |
Example
Let us see an example of Input DatetimeLocal required property −
<!DOCTYPE html> <html> <head> <title>Input DatetimeLocal required</title> <style> form { width:70%; margin: 0 auto; text-align: center; } * { padding: 2px; margin:5px; } input[type="button"] { border-radius: 10px; } </style> </head> <body> <form> <fieldset> <legend>Datetime-Local-required</legend> <label for="datetimeLocalSelect">Examination Slot : <input type="datetime-local" id="datetimeLocalSelect" value="" required> </label> <input type="button" onclick="confirmSlotBooking()" value="Confirm Slot"> <div id="divDisplay"></div> </fieldset> </form> <script> var divDisplay = document.getElementById("divDisplay"); var inputDatetimeLocal = document.getElementById("datetimeLocalSelect"); divDisplay.textContent = 'Slot Required: '+inputDatetimeLocal.required; function confirmSlotBooking() { if(inputDatetimeLocal.value === '') divDisplay.textContent += ', Choose a valid Exam Slot. '; else divDisplay.textContent = 'Slot Confirmed: '+inputDatetimeLocal.required+', Your Slot: '+inputDatetimeLocal.value; } </script> </body> </html>
Output
This will produce the following output −
Clicking ‘Confirm Slot’ button −
After clicking ‘Confirm Slot’ button with value of datetimeLocal field set −