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    Copyright
    Dedication
    Preface
    Ch. 1. Introduction to JavaScript
    Pt. I. Core JavaScript
    Pt. II. Client-Side JavaScript
    Pt. III. Core JavaScript Reference
    Ch. 24. Core JavaScript Reference
    Sample Entry: how to read these reference pages
    arguments[ ]: an array of function arguments
    Arguments: arguments and other properties of a function
    Arguments.callee: the function that is currently running
    Arguments.length: the number of arguments passed to a function
    Array: built-in support for arrays
    Array.concat( ): concatenate arrays
    Array.join( ): concatenate array elements to form a string
    Array.length: the size of an array
    Array.pop( ): remove and return the last element of an array
    Array.push( ): append elements to an array
    Array.reverse( ): reverse the elements of an array
    Array.shift( ): shift array elements down
    Array.slice( ): return a portion of an array
    Array.sort( ): sort the elements of an array
    Array.splice( ): insert, remove, or replace array elements
    Array.toLocaleString( ): convert an array to a localized string
    Array.toString( ): convert an array to a string
    Array.unshift( ): insert elements at the beginning of an array
    Boolean: support for boolean values
    Boolean.toString( ): convert a boolean value to a string
    Boolean.valueOf( ): the boolean value of a Boolean object
    Date: manipulate dates and times
    Date.getDate( ): return the day-of-the-month field of a Date
    Date.getDay( ): return the day-of-the-week field of a Date
    Date.getFullYear( ): return the year field of a Date
    Date.getHours( ): return the hours field of a Date
    Date.getMilliseconds( ): return the milliseconds field of a Date
    Date.getMinutes( ): return the minutes field of a Date
    Date.getMonth( ): return the month field of a Date
    Date.getSeconds( ): return the seconds field of a Date
    Date.getTime( ): return a Date in milliseconds
    Date.getTimezoneOffset( ): determine the offset from GMT
    Date.getUTCDate( ): return the day-of-the-month field of a Date (universal time)
    Date.getUTCDay( ): return the day-of-the-week field of a Date (universal time)
    Date.getUTCFullYear( ): return the year field of a Date (universal time)
    Date.getUTCHours( ): return the hours field of a Date (universal time)
    Date.getUTCMilliseconds( ): return the milliseconds field of a Date (universal time)
    Date.getUTCMinutes( ): return the minutes field of a Date (universal time)
    Date.getUTCMonth( ): return the month-of-the-year field of a Date (universal time)
    Date.getUTCSeconds( ): return the seconds field of a Date (universal time)
    Date.getYear( ): return the year field of a Date
    Date.parse( ): parse a date/time string
    Date.setDate( ): set the day-of-the-month field of a Date
    Date.setFullYear( ): set the year and, optionally, the month and date fields of a Date
    Date.setHours( ): set the hours, minutes, seconds, and milliseconds fields of a Date
    Date.setMilliseconds( ): set the milliseconds field of a Date
    Date.setMinutes( ): set the minutes, seconds, and milliseconds fields of a Date
    Date.setMonth( ): set the month and day fields of a Date
    Date.setSeconds( ): set the seconds and milliseconds fields of a Date
    Date.setTime( ): set a Date in milliseconds
    Date.setUTCDate( ): set the day-of-the-month field of a Date (universal time)
    Date.setUTCFullYear( ): set the year, month, and day fields of a Date (universal time)
    Date.setUTCHours( ): set the hours, minutes, seconds, and milliseconds fields of a Date (universal time)
    Date.setUTCMilliseconds( ): set the milliseconds field of a Date (universal time)
    Date.setUTCMinutes( ): set the minutes, seconds, and milliseconds fields of a Date (universal time)
    Date.setUTCMonth( ): set the month and day fields of a Date (universal time)
    Date.setUTCSeconds( ): set the seconds and milliseconds fields of a Date (universal time)
    Date.setYear( ): set the year field of a Date
    Date.toDateString( ): return the date portion of a Date as a string
    Date.toGMTString( ): convert a Date to a universal time string
    Date.toLocaleDateString( ): return the date portion of a Date as a locally formatted string
    Date.toLocaleString( ): convert a Date to a locally formatted string
    Date.toLocaleTimeString( ): return the time portion of a Date as a locally formatted string
    Date.toString( ): convert a Date to a string
    Date.toTimeString( ): return the time portion of a Date as a string
    Date.toUTCString( ): convert a Date to a string (universal time)
    Date.UTC( ): convert a Date specification to milliseconds
    Date.valueOf( ): convert a Date to millisecond representation
    decodeURI( ): unescape characters in a URI
    decodeURIComponent( ): unescape characters in a URI component
    encodeURI( ): escape characters in a URI
    encodeURIComponent( ): escape characters in a URI component
    Error: a generic exception
    Error.message: a human-readable error message
    Error.name: the type of an error
    Error.toString( ): convert an Error object to a string
    escape( ): encode a string
    eval( ): execute JavaScript code from a string
    EvalError: thrown when eval( ) is used improperly
    Function: a JavaScript function
    Function.apply( ): invoke a function as a method of an object
    Function.arguments[]: arguments passed to a function
    Function.call( ): invoke a function as a method of an object
    Function.caller: the function that called this one
    Function.length: the number of declared arguments
    Function.prototype: the prototype for a class of objects
    Function.toString( ): convert a function to a string
    getClass( ): return the JavaClass of a JavaObject
    Global: the global object
    Infinity: a numeric property that represents infinity
    isFinite( ): determine whether a number is finite
    isNaN( ): check for not-a-number
    java: the JavaPackage for the java.* package hierarchy
    JavaArray: JavaScript representation of a Java array
    JavaClass: JavaScript representation of a Java class
    JavaObject: JavaScript representation of a Java object
    JavaPackage: JavaScript representation of a Java package
    JSObject: see JSObject in Part IV
    Math: mathematical functions and constants
    Math.abs( ): compute an absolute value
    Math.acos( ): compute an arccosine
    Math.asin( ): compute an arcsine
    Math.atan( ): compute an arctangent
    Math.atan2( ): compute the angle from the X axis to a point
    Math.ceil( ): round a number up
    Math.cos( ): compute a cosine
    Math.E: the mathematical constant 'e'
    Math.exp( ): compute 'e'x
    Math.floor( ): round a number down
    Math.LN10: the mathematical constant loge2
    Math.LN2: the mathematical constant loge10
    Math.log( ): compute a natural logarithm
    Math.LOG10E: the mathematical constant log2 e
    Math.LOG2E: the mathematical constant log10 e
    Math.max( ): return the largest argument
    Math.min( ): return the smallest argument
    Math.PI: the mathematical constant π
    Math.pow( ): compute 'x'y
    Math.random( ): return a pseudorandom number
    Math.round( ): round to the nearest integer
    Math.sin( ): compute a sine
    Math.sqrt( ): compute a square root
    Math.SQRT1_2: the mathematical constant 1/␁
    Math.SQRT2: the mathematical constant ␁
    Math.tan( ): compute a tangent
    NaN: the not-a-number property
    Number: support for numbers
    Number.MAX_VALUE: the maximum numeric value
    Number.MIN_VALUE: the minimum numeric value
    Number.NaN: the special not-a-number value
    Number.NEGATIVE_INFINITY: negative infinity
    Number.POSITIVE_INFINITY: infinity
    Number.toExponential( ): format a number using exponential notation
    Number.toFixed( ): format a number using fixed-point notation
    Number.toLocaleString( ): convert a number to a locally formatted string
    Number.toPrecision( ): format the significant digits of a number
    Number.toString( ): convert a number to a string
    Number.valueOf( ): return the primitive number value
    Object: a superclass that contains features of all JavaScript objects
    Object.constructor: an object's constructor function
    Object.hasOwnProperty( ): check whether a property is inherited
    Object.isPrototypeOf( ): is one object the prototype of another?
    Object.propertyIsEnumerable( ): will property be seen by a for/in loop?
    Object.toLocaleString( ): return an object's localized string representation
    Object.toString( ): define an object's string representation
    Object.valueOf( ): the primitive value of the specified object
    Packages: the root JavaPackage
    parseFloat( ): convert a string to a number
    parseInt( ): convert a string to an integer
    RangeError: thrown when a number is out of its legal range
    ReferenceError: thrown when reading a variable that does not exist
    RegExp: regular expressions for pattern matching
    RegExp.exec( ): general-purpose pattern matching
    RegExp.global: whether a regular expression matches globally
    RegExp.ignoreCase: whether a regular expression is case-insensitive
    RegExp.lastIndex: the starting position of the next match
    RegExp.source: the text of the regular expression
    RegExp.test( ): test whether a string matches a pattern
    RegExp.toString( ): convert a regular expression to a string
    String: support for strings
    String.charAt( ): get the 'n'th character from a string
    String.charCodeAt( ): get the 'n'th character code from a string
    String.concat( ): concatenate strings
    String.fromCharCode( ): create a string from character encodings
    String.indexOf( ): search a string
    String.lastIndexOf( ): search a string backward
    String.length: the length of a string
    String.localeCompare( ): compare one string to another, using locale-specific ordering
    String.match( ): find one or more regular-expression matches
    String.replace( ): replace substring(s) matching a regular expression
    String.search( ): search for a regular expression
    String.slice( ): extract a substring
    String.split( ): break a string into an array of strings
    String.substr( ): extract a substring
    String.substring( ): return a substring of a string
    String.toLocaleLowerCase( ): convert a string to lowercase
    String.toLocaleUpperCase( ): convert a string to uppercase
    String.toLowerCase( ): convert a string to lowercase
    String.toString( ): return the string
    String.toUpperCase( ): convert a string to uppercase
    String.valueOf( ): return the string
    SyntaxError: thrown to signal a syntax error
    TypeError: thrown when a value is of the wrong type
    undefined: the undefined value
    unescape( ): decode an escaped string
    URIError: thrown by URI encoding and decoding methods
    Pt. IV. Client-Side JavaScript Reference
    Colophon
    Index
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    Chapter 24. Core JavaScript Reference > Date.setHours( ): set the hours, minute...

    Date.setHours( ): set the hours, minutes, seconds, and milliseconds fields of a DateECMAScript v1

    Synopsis

    date.setHours(hours)

    date.setHours(hours, minutes)

    date.setHours(hours, minutes, seconds)

    date.setHours(hours, minutes, seconds, millis)

    Arguments


    hours

    An integer between 0 (midnight) and 23 (11 p.m.) local time that is set as the new hours value of date.


    minutes

    An optional integer, between 0 and 59, that is used as the new value (in local time) of the minutes field of date. This argument is not supported prior to ECMAScript standardization.


    seconds

    An optional integer, between 0 and 59, that is used as the new value (in local time) of the seconds field of date. This argument is not supported prior to ECMAScript standardization.


    millis

    An optional integer, between 0 and 999, that is used as the new value (in local time) of the milliseconds field of date. This argument is not supported prior to ECMAScript standardization.

    Returns

    The millisecond representation of the adjusted date. Prior to ECMAScript standardization, this method returns nothing.


      

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