下麵是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>
- 輸出:
11
date.setUTCHours()方法用於根據使用Date()構造函數創建的通用時間將小時設置為日期對象。
用法:
DateObj.setUTCHours(hours_Value);
參數:該方法接受上述和以下描述的單個參數:
- hours_Value:此參數保存小時值,該值用於設置使用date()構造函數創建的日期對象。
返回值:它返回由setUTCHours()方法設置的新的即更新的小時。
注意:DateObj是使用Date()構造函數創建的有效Date對象,我們要在其中構造小時數。
上述方法的更多代碼如下:
程序1:如果在Date()構造函數中我們在創建Date對象時沒有給出小時,則setUTCHours()方法仍然能夠根據通用時間設置新小時,這是在創建的Date對象中作為其參數給出的。
<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>
輸出:
11
程序2:如果Date()構造函數中未提供任何參數,則setUTCHours()方法仍可以設置小時,但根據通用時間,月,年和日期仍為當前時間。
這裏11是新小時,2是當前月,即3月,30是當前日期,2018是當前年。
<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>
輸出:
11 2 30 2018
程序3:如果將setHours()方法的參數的小時值設置為26,則將小時設置為2,因為小時範圍是從0到23,因此,這裏減去24是因為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>
輸出:
2 9 14 1996
支持的瀏覽器:下麵列出了JavaScript Date setUTCHours()方法支持的瀏覽器:
- 穀歌瀏覽器
- IE瀏覽器
- 火狐瀏覽器
- Opera
- Safari
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注:本文由純淨天空篩選整理自Kanchan_Ray大神的英文原創作品 JavaScript Date setUTCHours() Method。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。