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d3.js schemePuBu[]用法及代码示例

D3.js 中的 d3.schemePuBu[] 函数用于从 “PuBu” 顺序配色方案中返回特定颜色，该颜色作为十六进制字符串返回。

用法:

d3.schemePuBu[k]

参数：该函数接受如上所述和以下描述的单个参数。

  • k:“k”是3到9之间的一个数字。

返回值它返回一个十六进制字符串。

下面给出的是上面给出的函数的一些示例。



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>D3.js schemePuBu[] Function</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> 
    <center>
    <h1 style="color:green;">GeeksForGeeks</h1>
      
    <h3>D3.js schemePuBu[] Function</h3>
      
    <script> 
        document.write(d3.schemePuBu[8][0]+"<br>"); 
        document.write(d3.schemePuBu[8][1]+"<br>");
        document.write(d3.schemePuBu[8][2]+"<br>");
        document.write(d3.schemePuBu[8][3]+"<br>");
        document.write(d3.schemePuBu[8][4]+"<br>");
        document.write(d3.schemePuBu[8][5]+"<br>");
        document.write(d3.schemePuBu[8][6]+"<br>");
        document.write(d3.schemePuBu[8][7]+"<br>");
    </script> 
    </center>
</body> 
</html>

输出：

范例2：

HTML


<!DOCTYPE html> 
<html lang="en"> 
<head> 
    <meta charset="UTF-8" /> 
    <meta name="viewport"
        path1tent="width=device-width,  
        initial-scale=1.0"/> 
          
    <title>D3.js schemePuBu() Function</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> 
<style> 
    div { 
        padding:3px; 
        width:fit-content; 
        height:20px;
        width:250px;
    } 
</style> 
<body> 
    <center>
    <h1 style="color:green;">GeeksForGeeks</h1>
      
    <h3>D3.js schemePuBu() Function</h3>
      
    <div class="b1"> 
        <span> 
            D3.schemePuBu[8][0] 
        </span> 
    </div> 
    <div class="b2"> 
        <span> 
            D3.schemePuBu[8][1]   
        </span> 
    </div> 
    <div class="b3"> 
        <span> 
            D3.schemePuBu[8][2] 
        </span> 
    </div> 
    <div class="b4"> 
        <span> 
            D3.schemePuBu[8][3]  
        </span> 
    </div> 
    <div class="b5"> 
        <span> 
            D3.schemePuBu[8][4] 
        </span> 
    </div> 
    <div class="b6"> 
        <span> 
            D3.schemePuBu[8][5]  
        </span> 
    </div> 
    <div class="b7"> 
        <span> 
            D3.schemePuBu[8][6]  
        </span> 
    </div> 
    <div class="b8"> 
        <span> 
            D3.schemePuBu[8][7] 
        </span> 
    </div> 
    <script> 
        // Array of colors is given 
        let color1 = d3.schemePuBu[8][0]; 
        let color2 = d3.schemePuBu[8][1]; 
        let color3 = d3.schemePuBu[8][2]; 
        let color4 = d3.schemePuBu[8][3]; 
        let color5 = d3.schemePuBu[8][4]; 
        let color6 = d3.schemePuBu[8][5];
        let color7 = d3.schemePuBu[8][6]; 
        let color8 = d3.schemePuBu[8][7]; 
  
        let b1 = document.querySelector(".b1"); 
        let b2 = document.querySelector(".b2"); 
        let b3 = document.querySelector(".b3"); 
        let b4 = document.querySelector(".b4"); 
        let b5 = document.querySelector(".b5"); 
        let b6 = document.querySelector(".b6"); 
        let b7 = document.querySelector(".b7"); 
        let b8 = document.querySelector(".b8"); 
          
        b1.style.backgroundColor = color1; 
        b2.style.backgroundColor = color2;
        b3.style.backgroundColor = color3; 
        b4.style.backgroundColor = color4;
        b5.style.backgroundColor = color5; 
        b6.style.backgroundColor = color6;
        b7.style.backgroundColor = color7;
        b8.style.backgroundColor = color8; 
    </script> 
    </center>
</body> 
</html>

输出：




相关用法


注：本文由纯净天空筛选整理自SHUBHAMSINGH10大神的英文原创作品 D3.js schemePuBu[] 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。