From 33058f2b292b3a581333bdfb21b8f671898c5060 Mon Sep 17 00:00:00 2001 From: Peter Bengtsson Date: Tue, 8 Dec 2020 14:40:17 -0500 Subject: initial commit --- .../global_objects/date/setutchours/index.html | 94 ++++++++++++++++++++++ 1 file changed, 94 insertions(+) create mode 100644 files/zh-cn/web/javascript/reference/global_objects/date/setutchours/index.html (limited to 'files/zh-cn/web/javascript/reference/global_objects/date/setutchours/index.html') diff --git a/files/zh-cn/web/javascript/reference/global_objects/date/setutchours/index.html b/files/zh-cn/web/javascript/reference/global_objects/date/setutchours/index.html new file mode 100644 index 0000000000..16d4989a4b --- /dev/null +++ b/files/zh-cn/web/javascript/reference/global_objects/date/setutchours/index.html @@ -0,0 +1,94 @@ +--- +title: Date.prototype.setUTCHours() +slug: Web/JavaScript/Reference/Global_Objects/Date/setUTCHours +translation_of: Web/JavaScript/Reference/Global_Objects/Date/setUTCHours +--- +
{{JSRef}}
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The setUTCHours() method sets the hour for a specified date according to universal time, and returns the number of milliseconds since 1 January 1970 00:00:00 UTC until the time represented by the updated {{jsxref("Date")}} instance.

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{{EmbedInteractiveExample("pages/js/date-setutchours.html")}}
+ + + +

Syntax

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dateObj.setUTCHours(hoursValue[, minutesValue[, secondsValue[, msValue]]])
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 参数

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+
hoursValue
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表示小时的整数，取值0到23之间。
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minutesValue
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可选参数。表示分钟的整数，取值0到59之间。
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secondsValue
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可选参数。表示秒数的整数，取值0到59之间。如果指定了该参数，就要同时指定minutesValue这个参数。
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msValue
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可选参数。表示毫秒的整数，取值0到999之间。如果指定了该参数，就要指定minutesValue和secondsValue这两个参数。
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返回值

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返回从1970-01-01 00:00:00 UTC 到更新后的日期所表示时间的毫秒数。

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描述

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If you do not specify the minutesValue, secondsValue, and msValue parameters, the values returned from the {{jsxref("Date.prototype.getUTCMinutes()", "getUTCMinutes()")}}, {{jsxref("Date.prototype.getUTCSeconds()", "getUTCSeconds()")}}, and {{jsxref("Date.prototype.getUTCMilliseconds()", "getUTCMilliseconds()")}} methods are used.

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If a parameter you specify is outside of the expected range, setUTCHours() attempts to update the date information in the {{jsxref("Date")}} object accordingly. For example, if you use 100 for secondsValue, the minutes will be incremented by 1 (minutesValue + 1), and 40 will be used for seconds.

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例子

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使用 setUTCHours()

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var theBigDay = new Date();
+theBigDay.setUTCHours(8);
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规范

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SpecificationStatusComment
{{SpecName('ES1')}}{{Spec2('ES1')}}Initial definition. Implemented in JavaScript 1.3.
{{SpecName('ES5.1', '#sec-15.9.5.35', 'Date.prototype.setUTCHours')}}{{Spec2('ES5.1')}} 
{{SpecName('ES6', '#sec-date.prototype.setutchours', 'Date.prototype.setUTCHours')}}{{Spec2('ES6')}} 
{{SpecName('ESDraft', '#sec-date.prototype.setutchours', 'Date.prototype.setUTCHours')}}{{Spec2('ESDraft')}} 
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浏览器兼容性

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{{Compat("javascript.builtins.Date.setUTCHours")}}

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相关链接

+ + -- cgit v1.2.3-54-g00ecf