JavaScript method setHours() to set the hour field of a specified time

Definition and Usage

The setHours() method is used to set the hour field of the specified time.

Syntax

dateObject.setHours(hour,min,sec,millisec)

Return value

Adjusted date expressed in milliseconds. Before ECMAScript was standardized, this method returned nothing.

Tips and Notes:

Note: If one of the above parameters is specified with a single digit, JavaScript will add one or two leading 0s to the result.

Note: This method is always used in conjunction with a Date object.

Example

Example 1

In this example, we will set the hour field of the current time to 15 through the setHours() method:

<script type="text/javascript">

var d = new Date()
d.setHours(15)
document.write(d)

</script>

Output:

Tue Nov 07 2017 15:46:45 GMT+0800 (中国标准时间)

Example 2

In this example, we will set the time to 15:35:01 through the setHours() method:

<script type="text/javascript">

var d = new Date()
d.setHours(15,35,1)
document.write(d)

</script>

Output:

Tue Nov 07 2017 15:35:01 GMT+0800 (中国标准时间)

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