Javascript date.setUTCSeconds()用法及代碼示例

date.setUTCSeconds()是JavaScript中的內置函數，用於根據通用時間將秒設置為使用Date()構造函數創建的日期對象。

用法:

DateObj.setUTCSeconds(seconds_Value);

DateObj是使用Date()構造函數創建的有效Date對象，我們要在其中設置秒數.second的值從0到59。

參數：在這裏，參數seconds_Value是我們想要在使用Date()構造函數創建的日期中設置的秒數。

返回值：它返回由setUTCSeconds()函數設置的新的即更新的秒。

下麵的程序演示了setUTCSeconds()函數：

<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 second of 52 is being set in above Date 
// Object with the help of setUTCSeconds() function 
dateobj.setUTCSeconds(52); 
  
// new second from above Date Object is 
// being extracted using getUTCSeconds() 
var B = dateobj.getUTCSeconds(); 
  
// Printing new Second 
document.write(B); 
</script>

輸出：

52

錯誤和異常

• 示例1:如果在Date()構造函數中創建日期對象時不給任何秒數，則setUTCSeconds()函數仍將能夠設置新的秒數，該秒數將根據創建的Date對象中的通用時間作為其參數給出。

  <script> 
  // Here second has not been assigned according to 
  // universal time while creating Date object 
  var dateobj = new Date('October 13, 1996 GMT-3:00'); 
    
  // new second of 51 is being set in above Date 
  // Object with the help of setUTCSeconds() function 
  dateobj.setUTCSeconds(51); 
    
  // new second from above Date Object is 
  // being extracted using getUTCSeconds() 
  var B = dateobj.getUTCSeconds(); 
    
  // Printing new Second 
  document.write(B); 
  </script>

  輸出：

  51

• 示例2:如果在Date()構造函數中未提供任何參數，則setUTCSeconds()函數仍可以設置第二個，但月，年，日期等仍為當前值。

  <script> 
  // Here nothing has been assigned 
  // while creating Date object 
  var dateobj = new Date(); 
    
  // new second of 42 is being set in above Date 
  // Object with the help of setUTCSeconds() function 
  dateobj.setUTCSeconds(42); 
    
  // Seconds from above Date Object is 
  // being extracted using getUTCSeconds() 
  var B = dateobj.getUTCSeconds(); 
    
  // 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 seconds 
  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：

  42
  3
  1
  2018

  根據通用時間，這裏42是新的秒數，3是當前月份，即4月，1是當前日期，2018是當前年份。

• 示例3:如果將秒66的值作為setSeconds()函數的參數給出，則它將6設置為秒，因為第二範圍是從0到59的形式，因此，此處減去60，因為0到59為60。

  <script> 
  // Here 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 second of 66 is being set in above Date 
  // Object with the help of setUTCSeconds() function 
  dateobj.setUTCSeconds(66); 
    
  // seconds from above Date Object is 
  // being extracted using getUTCSeconds() 
  var B = dateobj.getUTCSeconds(); 
    
  // Minute from above Date Object is 
  // being extracted using getUTCMinutes() 
  var C = dateobj.getUTCMinutes(); 
    
  // Printing new seconds 
  document.write(B + "<br>"); 
    
  // Printing minutes 
  document.write(C); 
  </script>

  輸出：

  6
  36

支持的瀏覽器：JavaScript date.setUTCSeconds()函數支持的瀏覽器如下：

• 穀歌瀏覽器
• IE瀏覽器
• 火狐瀏覽器
• Opera
• 蘋果瀏覽器