JavaScript Date setUTCDate()用法及代碼示例

下麵是Date setUTCDate()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 date 15 of the month is being set in above  
   // Date Object with the help of setDate() method 
   dateobj.setUTCDate(15); 
  
   // New date of the month according to universal  
   // time from above Date Object is being extracted  
   // using getDate() 
   var B = dateobj.getUTCDate(); 
  
   // Printing new date of the month 
   document.write(B); 
</script>

輸出：
```
15
```

date.setUTCDate()方法用於根據通用時間將一個月的日期設置為使用Date()構造函數創建的日期對象。

用法:

DateObj.setUTCDate(date_Value);

參數：該方法接受上述和以下描述的單個參數：

date_Value此參數保存我們要在使用Date()構造函數創建的date對象中設置的date值。

返回值：它返回由setUTCDate()方法設置的新的月更新日期。月份的日期是一個整數值，範圍是1到31。

上述方法的更多代碼如下：

程序1:在這裏，我們知道該月的日期在1到31之間，但是如果我們嘗試將日期設置為33，則它將下個月的日期設置為2，因為33-31 = 2並且此日期2成為日期上個月的下個月。

在上麵的輸出中，2是11月的日期，10是11月，因為月份名稱從0到11開始，即1月為0，12月為11。

<script> 
   // Here a date according to universal time has 
   // been assigned while creating Date object 
   var dateobj =  
   new Date('October 13, 1996 05:35:32 GMT-3:00'); 
  
   // New date 33 of the month is being set in above  
   // Date Object with the help of setUTCDate() function 
   dateobj.setUTCDate(33); 
  
   // New date of the month from above Date Object is 
   // being extracted using getUTCDate() 
   var B = dateobj.getUTCDate(); 
  
   // New month from above Date Object is 
   // being extracted using getUTCMonth() 
   var C = dateobj.getUTCMonth(); 
  
   // Printing new date of the month 
   document.write(B + "<br />"); 
  
   // Printing new month 
   document.write(C); 
</script>

輸出：

2
10

程序2:如果在Date()構造函數中我們在創建日期對象時不提供月份的任何日期，則setUTCDate()方法仍然可以設置新日期，該日期作為其在創建的日期對象中的參數給出。

<script> 
   // Here date according to universal time has 
   // not been assigned while creating Date object 
   var dateobj =  
   new Date('October, 1996 05:35:32 GMT-3:00'); 
  
   // New date 12 of the month is being set in above Date 
   // Object with the help of setUTCDate() method 
   dateobj.setUTCDate(12); 
  
   // New date of the month from above Date Object is 
   // being extracted using getUTCDate() 
   var B = dateobj.getUTCDate(); 
  
   // Printing new date of the month 
   document.write(B); 
</script>

輸出：

程序3:如果Date()構造函數中未提供任何參數，則setDate()函數仍可以設置日期，而月份仍為當前日期。

<script> 
   // Here nothing has been assigned 
   // while creating Date object 
   var dateobj = new Date(); 
  
   // new date 13 of the month is being set in above 
   // Date Object with the help of setUTCDate() method 
   dateobj.setUTCDate(13); 
  
   // Date of the month from above Date Object is 
   // being extracted using getUTCDate() 
   var B = dateobj.getUTCDate(); 
  
   // Month from above Date Object is 
   // being extracted using getUTCMonth() 
   var C = dateobj.getUTCMonth(); 
  
   // Printing new date of the month 
   document.write(B + "<br />"); 
  
   // Printing new month 
   document.write(C); 
</script>

輸出：

13
3

程序4:如果將月份的新日期設置為零(0)，則新日期將設置為上個月的最後一天。

<script> 
   // Here a date according to universal time 
   // has been assigned while creating Date object 
   var dateobj =  
   new Date('October 13, 1996 05:35:32 GMT-3:00'); 
  
   // New date 0 of the month is being set in above  
   // Date Object with the help of setUTCDate() method 
   dateobj.setUTCDate(0); 
  
   // Date of the month from above Date Object is 
   // being extracted using getUTCDate() 
   var B = dateobj.getUTCDate(); 
  
   // Month from above Date Object is 
   // being extracted using getUTCMonth() 
   var C = dateobj.getUTCMonth(); 
  
   // Printing new date of the month 
   document.write(B + "<br>"); 
  
   // Printing new month 
   document.write(C); 
</script>

輸出：

30
8

支持的瀏覽器：下麵列出了JavaScript Date setUTCDate()方法支持的瀏覽器：

穀歌瀏覽器
IE瀏覽器
火狐瀏覽器
Opera
Safari

相關用法

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 setUTCDate() 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。