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d3.js schemeOrRd[]用法及代码示例


D3.js中的d3.schemeOrRd []函数用于从“OrRd”顺序配色方案中返回特定颜色，该颜色以十六进制字符串形式返回。

用法:

d3.schemeOrRd[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。

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"/>  
   
    <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 schemeOrRd[] Function</h3> 
      
    <script>  
        document.write(d3.schemeOrRd[8][0]+"<br>");  
        document.write(d3.schemeOrRd[8][1]+"<br>"); 
        document.write(d3.schemeOrRd[8][2]+"<br>"); 
        document.write(d3.schemeOrRd[8][3]+"<br>"); 
        document.write(d3.schemeOrRd[8][4]+"<br>"); 
        document.write(d3.schemeOrRd[8][5]+"<br>"); 
        document.write(d3.schemeOrRd[8][6]+"<br>"); 
        document.write(d3.schemeOrRd[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"/>  
   
    <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>  
  
    <style>  
        div {  
            padding:3px;  
            width:fit-content;  
            height:20px; 
            width:250px; 
        }  
    </style>  
</head>  
  
<body>  
    <center> 
    <h1 style="color:green;">GeeksForGeeks</h1> 
      
    <h3>D3.js schemeOrRd() Function</h3> 
      
    <div class="b1">  
        <span>  
            D3.schemeOrRd[8][0]  
        </span>  
    </div>  
    <div class="b2">  
        <span>  
            D3.schemeOrRd[8][1]    
        </span>  
    </div>  
    <div class="b3">  
        <span>  
            D3.schemeOrRd[8][2]  
        </span>  
    </div>  
    <div class="b4">  
        <span>  
            D3.schemeOrRd[8][3]   
        </span>  
    </div>  
    <div class="b5">  
        <span>  
            D3.schemeOrRd[8][4]  
        </span>  
    </div>  
    <div class="b6">  
        <span>  
            D3.schemeOrRd[8][5]   
        </span>  
    </div>  
    <div class="b7">  
        <span>  
            D3.schemeOrRd[8][6]   
        </span>  
    </div>  
    <div class="b8">  
        <span>  
            D3.schemeOrRd[8][7]  
        </span>  
    </div>  
    <script>  
        // Array of colors is given  
        let color1 = d3.schemeOrRd[8][0];  
        let color2 = d3.schemeOrRd[8][1];  
        let color3 = d3.schemeOrRd[8][2];  
        let color4 = d3.schemeOrRd[8][3];  
        let color5 = d3.schemeOrRd[8][4];  
        let color6 = d3.schemeOrRd[8][5]; 
        let color7 = d3.schemeOrRd[8][6];  
        let color8 = d3.schemeOrRd[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 schemeOrRd[] 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。