D3.js schemeSet1 方法

D3.js 中的d3.schemeSet1 方法用于返回一个由九种分类颜色组成的数组，该数组以 RGB 十六进制字符串的形式返回。

句法：

d3.schemeSet1

参数：此方法不接受任何参数。

返回值：它返回一个 RGB 十六进制字符串。

示例 1：

HTML

  

    
    
    
    
    
    
    
    

  

  
    GeeksForGeeks
      
    D3.js schemeSet1 Method
      
    
      document.write(d3.schemeSet1[0] + "<br>");
      document.write(d3.schemeSet1[1] + "<br>");
      document.write(d3.schemeSet1[2] + "<br>");
      document.write(d3.schemeSet1[3] + "<br>");
      document.write(d3.schemeSet1[4] + "<br>");
      document.write(d3.schemeSet1[5] + "<br>");
      document.write(d3.schemeSet1[6] + "<br>");
      document.write(d3.schemeSet1[7] + "<br>");
      document.write(d3.schemeSet1[8] + "<br>");
    
  

输出：

示例 2：

HTML

  

    
    
    
    
    
    
    
    
  
    
        div {
            padding: 3px;
            width: fit-content;
            height: 20px;
            width: 250px;
        }
    

  

  
    GeeksForGeeks
  
    D3.js schemeSet1 Method
  
    
      
        D3.schemeSet1[0]
      
    
    
      
        D3.schemeSet1[1]
      
    
    
      
        D3.schemeSet1[2]
      
    
    
      
        D3.schemeSet1[3]
      
    
    
      
        D3.schemeSet1[4]
      
    
    
      
        D3.schemeSet1[5]
      
    
    
      
        D3.schemeSet1[6]
      
    
    
      
        D3.schemeSet1[7]
      
    
    
      
        D3.schemeSet1[8]
      
    
      
    
      // Array of colors is given 
      let color1 = d3.schemeSet1[0];
      let color2 = d3.schemeSet1[1];
      let color3 = d3.schemeSet1[2];
      let color4 = d3.schemeSet1[3];
      let color5 = d3.schemeSet1[4];
      let color6 = d3.schemeSet1[5];
      let color7 = d3.schemeSet1[6];
      let color8 = d3.schemeSet1[7];
      let color9 = d3.schemeSet1[8];
  
      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");
      let b9 = document.querySelector(".b9");
  
      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;
      b9.style.backgroundColor = color9; 
    
  

输出：