下面是Date setUTCHours()方法的示例。
- 例:
<script> // Here a date has been assigned according to // universal time while creating Date object var dateobj = new Date('October 13, 1996 05:35:32 GMT-3:00'); // New hour 11 is being set in above Date // Object with the help of setUTCHours() method dateobj.setUTCHours(11); // New hour from above Date Object is // being extracted using getUTCHours() var B = dateobj.getUTCHours(); // Printing new hour document.write(B); </script>
- 输出:
11
date.setUTCHours()方法用于根据使用Date()构造函数创建的通用时间将小时设置为日期对象。
用法:
DateObj.setUTCHours(hours_Value);
参数:该方法接受上述和以下描述的单个参数:
- hours_Value:此参数保存小时值,该值用于设置使用date()构造函数创建的日期对象。
返回值:它返回由setUTCHours()方法设置的新的即更新的小时。
注意:DateObj是使用Date()构造函数创建的有效Date对象,我们要在其中构造小时数。
上述方法的更多代码如下:
程序1:如果在Date()构造函数中我们在创建Date对象时没有给出小时,则setUTCHours()方法仍然能够根据通用时间设置新小时,这是在创建的Date对象中作为其参数给出的。
<script>
// Here hour has not been assigned according to
// universal time while creating Date object
var dateobj = new Date('October 13, 1996 GMT-3:00');
// New hour 11 is being set in above Date
// Object with the help of setUTCHours() method
dateobj.setUTCHours(11);
// New hour from above Date Object is
// being extracted using getUTCHours()
var B = dateobj.getUTCHours();
// Printing new hour
document.write(B);
</script>
输出:
11
程序2:如果Date()构造函数中未提供任何参数,则setUTCHours()方法仍可以设置小时,但根据通用时间,月,年和日期仍为当前时间。
这里11是新小时,2是当前月,即3月,30是当前日期,2018是当前年。
<script>
// Here nothing has been assigned
// while creating Date object
var dateobj = new Date();
// New hour 11 is being set in above Date
// Object with the help of setUTCHours() method
dateobj.setUTCHours(11);
// Hour from above Date Object is
// being extracted using getUTCHours()
var B = dateobj.getUTCHours();
// Month from above Date Object is
// being extracted using getUTCMonth()
var C = dateobj.getUTCMonth();
// date from above Date Object is
// being extracted using getUTCDate()
var D = dateobj.getUTCDate();
// Year from above Date Object is
// being extracted using getUTCFullYear()
var E = dateobj.getUTCFullYear();
// Printing new Hour
document.write(B + "<br />");
// Printing current month
document.write(C + "<br />");
// Printing current date
document.write(D + "<br />");
// Printing current year
document.write(E);
</script>
输出:
11 2 30 2018
程序3:如果将setHours()方法的参数的小时值设置为26,则将小时设置为2,因为小时范围是从0到23,因此,这里减去24是因为0到23是24。
<script>
// Here nothing has been assigned
// while creating Date object
var dateobj =
new Date('October 13, 1996 05:35:32');
// New hour 26 is being set in above Date
// Object with the help of setUTCHours() method
dateobj.setUTCHours(26);
// Hour from above Date Object is
// being extracted using getUTCHours()
var B = dateobj.getUTCHours();
// Month from above Date Object is
// being extracted using getUTCMonth()
var C = dateobj.getUTCMonth();
// Date from above Date Object is
// being extracted using getUTCDate()
var D = dateobj.getUTCDate();
// Year from above Date Object is
// being extracted using getUTCFullYear()
var E = dateobj.getUTCFullYear();
// Printing new Hour
document.write(B + "<br />");
// Printing month
document.write(C + "<br />");
// Printing date
document.write(D + "<br />");
// Printing year
document.write(E);
</script>
输出:
2 9 14 1996
支持的浏览器:下面列出了JavaScript Date setUTCHours()方法支持的浏览器:
- 谷歌浏览器
- IE浏览器
- 火狐浏览器
- Opera
- Safari
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注:本文由纯净天空筛选整理自Kanchan_Ray大神的英文原创作品 JavaScript Date setUTCHours() Method。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。