当前位置: 首页>>代码示例 >>用法及示例精选 >>正文


d3.js d3.utcWeek用法及代码示例


D3.js中的d3.utcWeek函数用于返回所有星期,其日期和时间在协调世界时(UTC)的给定开始和结束日期范围内。

用法:

d3.utcWeek.range(start, end, step);

参数:该函数接受以下三个参数:


  • Start:此参数保存给定的开始日期。
  • end:此参数保存给定的结束日期。
  • step:它是可选参数,其中包含用于跳过星期的值。

返回值:此函数返回给定范围内的所有可能的星期。

以下程序说明了D3.js中的d3.utcWeek函数:

示例1:

<!DOCTYPE html> 
<html> 
   <head> 
      <title> 
          D3.js | d3.utcWeek Function 
      </title> 
  
      <script src = 
          "https://d3js.org/d3.v4.min.js"> 
      </script> 
   </head> 
   
   <body> 
         
      <script> 
         
         // Initialising start and end date 
         var start = new Date(2015, 01, 01); 
         var end = new Date(2015, 02, 01); 
           
         // Calling the utcWeek function 
         // without step value 
         var a = d3.utcWeek.range(start, end); 
           
         // Getting the week values 
         console.log(a); 
      </script> 
   </body> 
</html>

输出:

["2015-02-01T00:00:00.000Z", "2015-02-08T00:00:00.000Z",
"2015-02-15T00:00:00.000Z", "2015-02-22T00:00:00.000Z"]

示例2:

<!DOCTYPE html> 
<html> 
   <head> 
      <title> 
          D3.js | d3.utcWeek Function 
      </title> 
  
      <script src = 
          "https://d3js.org/d3.v4.min.js"> 
      </script> 
   </head> 
   
   <body> 
         
      <script> 
         
         // Initialising start and end date 
         var start = new Date(2015, 01, 01); 
         var end = new Date(2015, 02, 01); 
           
         // Calling the utcWeek function 
         // with step value 
         var a = d3.utcWeek.range(start, end, 2); 
           
         // Getting the week values 
         console.log(a); 
      </script> 
   </body> 
</html>

输出:

["2015-02-01T00:00:00.000Z", "2015-02-15T00:00:00.000Z"]

参考: https://devdocs.io/d3~5/d3-time#timeWeek



相关用法


注:本文由纯净天空筛选整理自Kanchan_Ray大神的英文原创作品 D3.js | d3.utcWeek Function。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。