D3.js schemePurples[]函数

D3.js 中的d3.schemePurples[]函数用于从以 HEX字符串形式返回的“Purples”顺序配色方案中返回特定颜色。

句法：

d3.schemePurples[k]

参数：此函数接受如上所述和如下所述的单个参数：

• k： “k”是一个从 3 到 9 的数字。

返回值：它返回一个 HEX字符串。

下面给出了上面给出的函数的几个例子。

示例 1：

 
 
 
     
     
          
    D3.js schemePurples[] Function 
     
     
     
     
 
 
    
    GeeksForGeeks
      
    D3.js schemePurples[] Function
      
     
        document.write(d3.schemePurples[6][0]+"<br>"); 
        document.write(d3.schemePurples[6][1]+"<br>");
        document.write(d3.schemePurples[6][2]+"<br>");
        document.write(d3.schemePurples[6][3]+"<br>");
        document.write(d3.schemePurples[6][4]+"<br>");
        document.write(d3.schemePurples[6][5]);
     
    
 

输出：

示例 2：

 
 
 
     
     
          
    D3.js schemePurples[] Function 
     
     
     
     
 
 
    div { 
        padding: 10px; 
        width: fit-content; 
        height: 20px; 
    } 
 
 
    
    GeeksForGeeks
      
    D3.js schemePurples[] Function
      
     
         
            D3.schemePurples[6][0] 
         
     
     
         
            D3.schemePurples[6][1]  
         
     
     
         
            D3.schemePurples[6][2] 
         
     
     
         
            D3.schemePurples[6][3]  
         
     
     
         
            D3.schemePurples[6][4] 
         
     
     
         
            D3.schemePurples[6][5]  
         
     
      
     
        // Array of colors is given 
        let color1 = d3.schemePurples[6][0]; 
        let color2 = d3.schemePurples[6][1]; 
        let color3 = d3.schemePurples[6][2]; 
        let color4 = d3.schemePurples[6][3]; 
        let color5 = d3.schemePurples[6][4]; 
        let color6 = d3.schemePurples[6][5]; 
  
        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"); 
          
        b1.style.backgroundColor = color1; 
        b2.style.backgroundColor = color2;
        b3.style.backgroundColor = color3; 
        b4.style.backgroundColor = color4;
        b5.style.backgroundColor = color5; 
        b6.style.backgroundColor = color6;
     
    
 

输出：