d3.js time.domain()用法及代码示例

d3.js中的time.domain()函数用于设置时间范围的域。如果未指定域，则默认域为[2000-01-01、2000-01-02]。

用法:

time.domain([domain]);

参数：该函数接受上面给出的和下面描述的一个参数。

domain:这需要一个数字数组。默认值为[2000-01-01、2000-01-02]。

返回值：此函数不返回任何内容。

范例1：

HTML

<!DOCTYPE html> 
<html lang="en"> 
  
<head> 
    <meta charset="UTF-8" /> 
    <meta name="viewport" path1tent="width=device-width,  
        initial-scale=1.0" /> 
    <title>Geeks for geeks</title> 
    <script src="https://d3js.org/d3.v4.min.js"> 
    </script> 
    <script src="https://d3js.org/d3-color.v1.min.js"> 
    </script> 
    <script src="https://d3js.org/d3-interpolate.v1.min.js"> 
    </script> 
    <script src="https://d3js.org/d3-scale-chromatic.v1.min.js"> 
    </script> 
</head> 
  
<body> 
    <h1 style="color:green;"> 
        GeeksforGeeks 
    </h1> 
      
    <p>D3.js time.domain() Function </p> 
  
    <script> 
        var time = d3.scaleTime() 
  
            // Setting domain for the scale 
            .domain([2011 - 01 - 01, 2015 - 05 - 02]); 
              
        document.write("<h3>time(1):" + time(1) + "</h3>"); 
        document.write("<h3>time(2):" + time(2) + "</h3>"); 
        document.write("<h3>time(3):" + time(3) + "</h3>"); 
        document.write("<h3>time(4):" + time(4) + "</h3>"); 
    </script> 
</body> 
  
</html>

输出：

范例2：以下示例演示了域为字符串类型时的上述函数。

HTML

<!DOCTYPE html> 
<html lang="en"> 
  
<head> 
    <meta charset="UTF-8" /> 
    <meta name="viewport" path1tent="width=device-width,  
        initial-scale=1.0" /> 
    <script src="https://d3js.org/d3.v4.min.js"> 
    </script> 
    <script src="https://d3js.org/d3-color.v1.min.js"> 
    </script> 
    <script src="https://d3js.org/d3-interpolate.v1.min.js"> 
    </script> 
    <script src="https://d3js.org/d3-scale-chromatic.v1.min.js"> 
    </script> 
</head> 
  
<body> 
    <h1 style="color:green;"> 
        GeeksforGeeks 
    </h1> 
      
    <p>D3.js time.domain() Function </p> 
  
    <script> 
        // Setting domain for the scale  
        var time = d3.scaleTime() 
            .domain(["2011-01-01", "2015-05-02"]); 
              
        document.write("<h3>time(10):"  
                    + time(10) + "</h3>"); 
    </script> 
</body> 
  
</html>

输出：

范例3：

HTML

<!DOCTYPE html> 
<html lang="en"> 
  
<head> 
    <meta charset="UTF-8" /> 
    <meta name="viewport" path1tent="width=device-width,  
        initial-scale=1.0" /> 
    <script src="https://d3js.org/d3.v4.min.js"> 
    </script> 
    <script src="https://d3js.org/d3-color.v1.min.js"> 
    </script> 
    <script src="https://d3js.org/d3-interpolate.v1.min.js"> 
    </script> 
    <script src="https://d3js.org/d3-scale-chromatic.v1.min.js"> 
    </script> 
</head> 
  
<body> 
    <h1 style="color:green;"> 
        GeeksforGeeks 
    </h1> 
      
    <p>D3.js time.domain() Function </p> 
      
    <script> 
        // Setting domain for the scale  
        var time = d3.scaleTime() 
            .domain([1, 100]) 
        // default range is used. 
        document.write("<h3>time(1):" + time(1) + "</h3>"); 
        document.write("<h3>time(2):" + time(2) + "</h3>"); 
        document.write("<h3>time(3):" + time(3) + "</h3>"); 
        document.write("<h3>time(4):" + time(4) + "</h3>"); 
    </script> 
</body> 
  
</html>

输出：

相关用法

注：本文由纯净天空筛选整理自tarun007大神的英文原创作品 D3.js time.domain() 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。