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JavaScript Reference
JavaScript Objects
Date Object (JavaScript)
constructor Property (Date)
prototype Property (Date)
Date.now Function (JavaScript)
Date.parse Function (JavaScript)
Date.UTC Function (JavaScript)
getDate Method (Date) (JavaScript)
getDay Method (Date) (JavaScript)
getFullYear Method (Date) (JavaScript)
getHours Method (Date) (JavaScript)
getMilliseconds Method (Date) (JavaScript)
getMinutes Method (Date) (JavaScript)
getMonth Method (Date) (JavaScript)
getSeconds Method (Date) (JavaScript)
getTime Method (Date) (JavaScript)
getTimezoneOffset Method (Date) (JavaScript)
getUTCDate Method (Date) (JavaScript)
getUTCDay Method (Date) (JavaScript)
getUTCFullYear Method (Date) (JavaScript)
getUTCHours Method (Date) (JavaScript)
getUTCMilliseconds Method (Date) (JavaScript)
getUTCMinutes Method (Date) (JavaScript)
getUTCMonth Method (Date) (JavaScript)
getUTCSeconds Method (Date) (JavaScript)
getVarDate Method (Date) (JavaScript)
getYear Method (Date) (JavaScript)
setDate Method (Date) (JavaScript)
setFullYear Method (Date) (JavaScript)
setHours Method (Date) (JavaScript)
setMilliseconds Method (Date) (JavaScript)
setMinutes Method (Date) (JavaScript)
setMonth Method (Date) (JavaScript)
setSeconds Method (Date) (JavaScript)
setTime Method (Date) (JavaScript)
setUTCDate Method (Date) (JavaScript)
setUTCFullYear Method (Date) (JavaScript)
setUTCHours Method (Date) (JavaScript)
setUTCMilliseconds Method (Date) (JavaScript)
setUTCMinutes Method (Date) (JavaScript)
setUTCMonth Method (Date) (JavaScript)
setUTCSeconds Method (Date) (JavaScript)
setYear Method (Date) (JavaScript)
toDateString Method (Date) (JavaScript)
toGMTString Method (Date) (JavaScript)
toISOString Method (Date) (JavaScript)
toJSON Method (Date) (JavaScript)
toLocaleDateString Method (Date) (JavaScript)
toLocaleTimeString Method (Date) (JavaScript)
toTimeString Method (Date) (JavaScript)
toUTCString Method (Date) (JavaScript)
toString Method (Date)
valueOf Method (Date)
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valueOf Method (Date)

JavaScript - Internet Explorer 10

Returns the stored time value in milliseconds since midnight, January 1, 1970 UTC.

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date.valueOf()

The date object is any instance of a Date.

The stored time value in milliseconds since midnight, January 1, 1970 UTC. This is the same value as getTime.

The following example illustrates the use of the valueOf method with a date.

JavaScript
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var myDate = new Date();
myDate.setFullYear(2100, 5, 5);
if (myDate.getTime() == myDate.valueOf())
    document.write("values are the same");
else
    document.write("values are different");

// Output: values are the same

Supported in the following document modes: Quirks, Internet Explorer 6 standards, Internet Explorer 7 standards, Internet Explorer 8 standards, Internet Explorer 9 standards, Internet Explorer 10 standards. Also supported in Windows Store apps. See Version Information.

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