##set## English [set] US [sɛt]

vt. Set; place, arrange; place in a certain place a situation; placing tableware

vi. setting; setting off; condensation

n.gathering; a set, a pair; scenery; television

adj. fixed; Located in...; stubborn; arranged

Third person singular: sets Plural: sets Present participle: setting Past tense: set Past participle: set

hour

UK[ˈaʊə(r)] US[aʊr]

n. Hour, hour; time, moment; fixed time; class hour

Plural: hours

javascript setHours() method syntax

Function:Set the hour field of the specified time.

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

Parameters: hour Required. A value representing the hour, between 0 (midnight) and 23 (11 p.m.), in local time (the same below). min is optional. A value representing minutes, between 0 and 59. Before EMCAScript was standardized, this parameter was not supported. sec is optional. A value representing seconds, between 0 and 59. Before EMCAScript was standardized, this parameter was not supported. millisec Optional. A value representing milliseconds, between 0 and 999. Before EMCAScript was standardized, this parameter was not supported.

Returns: The millisecond representation of the adjusted date. Before ECMAScript was standardized, this method returned nothing.

Note: If one of the above parameters is specified with a one-digit number, JavaScript will add one or two leading 0s to the result. This method is always used in conjunction with a Date object.

javascript setHours() method example

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<script type="text/javascript">
//通过 setHours() 方法把当前时间的小时字段设置为 15
    var d = new Date()
    d.setHours(15)
    document.write(d)

</script>

</body>
</html>

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