Javascript date.setUTCDate()用法及代码示例

date.setUTCDate()是JavaScript中的内置函数，用于根据通用时间将一个月的日期设置为使用Date()构造函数创建的日期对象。

用法:

DateObj.setUTCDate(date_Value);

DateObj是使用Date()构造函数创建的有效Date对象，在该构造函数中，我们要根据通用时间设置一个月的日期。

参数：这里的参数date_Value是要在使用Date()构造函数创建的日期对象中设置的日期值。

返回值：它返回由setUTCDate()函数设置的新的月更新日期，该月的日期是1到31之间的整数值。

以下示例程序旨在说明setITCDate()函数：

<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() function 
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>

输出：

15

错误和异常

• 示例1:在这里，我们知道月份的日期在1到31之间，但是如果我们尝试将日期设置为33，则它将下个月的日期设置为2，因为33-31 = 2，并且此日期2成为下一个日期上个月的。

  <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>

  输出：

  2
  10

  在上面的输出中，2是十一月的日期，而10是十一月的月份，因为月份名称从0到11开始，即，一月为0，十二月为11。

• 示例2:如果在Date()构造函数中我们在创建日期对象时未提供月份的任何日期，则setUTCDate()函数仍将能够设置新日期，该日期作为其在创建的日期对象中的参数给出。

  <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() function 
  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>

  输出：

  12

• 示例3:如果Date()构造函数中未提供任何参数，则setDate()函数仍然可以设置日期，而月份仍为当前日期。

  <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() function 
  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>

  输出：

  13
  3

• 示例4:如果将月份的新日期设置为零(0)，则新日期将设置为上个月的最后一天。

  <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() function 
  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>

  输出：

  30
  8

支持的浏览器：JavaScript date.setUTCDate()函数支持的浏览器如下：

• 谷歌浏览器
• IE浏览器
• 火狐浏览器
• Opera
• 苹果浏览器