HTML | DOM Time dateTime Property

The DOM Time dateTime Property is used to set or return the value of the DateTime attribute of the <time> Element. The date-time is inserted in the format YYYY-MM-DDThh:mm:ssTZD.

Syntax:

It is used to return the DateTime property.
```
timeObject.dateTime
```

It is used to set the dateTime property.

timeObject.dateTime = YYYY -MM-DDThh:mm:ssTZD

Property Values:

YYYY-MM-DDThh:mm:ssTZD YYYY-MM-DDThh:mm:ssTZD It specifies the date and time.

Explanation:

YYYY – year (e.g. 2009)
MM – month (e.g. 01 for January)
DD – day of the month (e.g. 04)
T – a required separator
hh – hour (e.g. 20 for 8.00pm)
mm – minutes (e.g. 35)
ss – seconds (e.g. 09)
TZD – Time Zone Designator (Z denotes Zulu, also known as Greenwich Mean Time)

Return value: It returns a string value which represent the date and time.

Example-1: This Example sets the dateTime Property.

<!DOCTYPE html>
<html>
  
<head>
    <title>
        HTML DOM Time dateTime Property
    </title>
</head>
  
<body style="text-align:center;">
    <h1>GeeksforGeeks</h1>
  
    <h2>
    DOM Time dateTime Property
</h2>
  
    <p>
        <time id="GFG" 
              datetime="2018-11-21T15:55:03Z">
        </time>
    </p>
  
    <button onclick="myGeeks()">
        Submit
    </button>
  
    <p id="sudo"></p>
  
    <script>
        function myGeeks() {
            var g = document.getElementById(
                "GFG").dateTime = "2013-11-15T21:40:07Z";
  
            document.getElementById("sudo").innerHTML =
                "The value of the dateTime attribute was changed to "
            + g;
        }
    </script>
  
</body>
  
</html>

Output:
Before Clicking On Button:

After Clicking On Button:

Example-2:This Example returns the dateTime Property.

<!DOCTYPE html>
<html>
  
<head>
    <title>
        HTML DOM Time dateTime Property
    </title>
  
</head>
  
<body style="text-align:center;">
    <h1>
    GeeksforGeeks
</h1>
  
    <h2>
    DOM Time dateTime Property
</h2>
  
    <time id="GFG" 
          datetime="2018-11-21T15:55:03Z">
    </time>
  
    <button onclick="myGeeks()"> 
      Submit
  </button>
  
    <p id="sudo"></p>
  
    <script>
        function myGeeks() {
            var g = 
                document.getElementById(
                  "GFG").dateTime;
            
            document.getElementById(
              "sudo").innerHTML = g;
        }
    </script>
  
</body>
  
</html>