D3.js interpolateCool()函数

D3.js中的d3.interpolateCool()函数用于从 Niccoli 的感知彩虹中返回特定颜色，该颜色作为 RGB字符串返回。

句法：

d3.interpolateCool(t)

参数：此函数接受如上所述和如下所述的单个参数：

• t： “t”是 [0, 1] 范围内的数字

返回值：它返回一个 RGB字符串。

示例 1：

HTML

  

    
    
  
    D3.js interpolateCool() Function
    
    
    
    
    
    
    
    

  

    
        GeeksForGeeks
  
        D3.js interpolateCool() Function
  
        
            document.write(d3.interpolateCool(0) + "<br>");
            document.write(d3.interpolateCool(0.1) + "<br>");
            document.write(d3.interpolateCool(0.2) + "<br>");
            document.write(d3.interpolateCool(0.3) + "<br>");
            document.write(d3.interpolateCool(0.4) + "<br>");
            document.write(d3.interpolateCool(0.5) + "<br>");
            document.write(d3.interpolateCool(0.6) + "<br>");
            document.write(d3.interpolateCool(0.7) + "<br>");
            document.write(d3.interpolateCool(0.8) + "<br>");
            document.write(d3.interpolateCool(0.9) + "<br>");
            document.write(d3.interpolateCool(1));
        
    

  

输出：

示例 2：

HTML

 
 
 
     
     
          
    D3.js interpolateCool() Function 
    
    
    
    
    
    
    
    
  
     
        div { 
            padding: 3px; 
            width: fit-content; 
            height: 20px;
            width: 200px;
        } 
     
 
  
 
    
    GeeksForGeeks
      
    D3.js interpolateCool() Function
      
     
         
            D3.interpolateCool(0) 
         
     
     
         
            D3.interpolateCool(0.1)  
         
     
     
         
            D3.interpolateCool(0.2)
         
     
     
         
            D3.interpolateCool(0.3)  
         
     
     
         
            D3.interpolateCool(0.4) 
         
     
     
         
            D3.interpolateCool(0.5)  
         
     
     
         
            D3.interpolateCool(0.6)  
         
     
     
         
            D3.interpolateCool(0.7) 
         
     
     
         
            D3.interpolateCool(0.8)  
         
     
     
         
            D3.interpolateCool(0.9)  
         
     
     
         
            D3.interpolateCool(1)  
         
     
     
        // Array of colors is given 
        let color1 = d3.interpolateCool(0.0); 
        let color2 = d3.interpolateCool(0.1); 
        let color3 = d3.interpolateCool(0.2); 
        let color4 = d3.interpolateCool(0.3); 
        let color5 = d3.interpolateCool(0.4); 
        let color6 = d3.interpolateCool(0.5);
        let color7 = d3.interpolateCool(0.6); 
        let color8 = d3.interpolateCool(0.7); 
        let color9 = d3.interpolateCool(0.8); 
        let color10 = d3.interpolateCool(0.9); 
        let color11 = d3.interpolateCool(1.0); 
  
        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"); 
        let b10 = document.querySelector(".b10"); 
        let b11 = document.querySelector(".b11"); 
          
        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;
        b10.style.backgroundColor = color10; 
        b11.style.backgroundColor = color11;
     
    
 

输出：