Javascript date.setUTCSeconds()用法及代码示例

date.setUTCSeconds()是JavaScript中的内置函数，用于根据通用时间将秒设置为使用Date()构造函数创建的日期对象。

用法:

DateObj.setUTCSeconds(seconds_Value);

DateObj是使用Date()构造函数创建的有效Date对象，我们要在其中设置秒数.second的值从0到59。

参数：在这里，参数seconds_Value是我们想要在使用Date()构造函数创建的日期中设置的秒数。

返回值：它返回由setUTCSeconds()函数设置的新的即更新的秒。

下面的程序演示了setUTCSeconds()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 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>

输出：

52

错误和异常

• 示例1:如果在Date()构造函数中创建日期对象时不给任何秒数，则setUTCSeconds()函数仍将能够设置新的秒数，该秒数将根据创建的Date对象中的通用时间作为其参数给出。

  <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>

  输出：

  51

• 示例2:如果在Date()构造函数中未提供任何参数，则setUTCSeconds()函数仍可以设置第二个，但月，年，日期等仍为当前值。

  <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>

  输出：

  42
  3
  1
  2018

  根据通用时间，这里42是新的秒数，3是当前月份，即4月，1是当前日期，2018是当前年份。

• 示例3:如果将秒66的值作为setSeconds()函数的参数给出，则它将6设置为秒，因为第二范围是从0到59的形式，因此，此处减去60，因为0到59为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>

  输出：

  6
  36

支持的浏览器：JavaScript date.setUTCSeconds()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