d3.js continuous.domain()用法及代碼示例

Continuous.domain()函數用於將秤的域設置為指定的數字數組。此處指定的數組中包含兩個或兩個以上元素。

用法:

continuous.domain([domain]);

參數：該函數接受上麵提到的和下麵描述的單個參數。

[域]：這是一個采用兩個或多個指定域的值的數組。

返回值：此函數不返回任何內容。

以下示例說明了JavaScript中的D3.js Continuous.domain()函數：

範例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 style="text-align:center;">  
    <h2 style="color:green;"> 
        Geeksforgeeks 
    </h2> 
      
    <p>D3.js continuous.domain() Function </p> 
  
    <script>  
    var object = d3.scaleLinear() 
                // Domain ranges 0 to 1 
                    .domain([0, 1]) 
                    .range(["red", "green"]); 
    document.write("<br/>") 
    document.write("<h4>"+object(0)+"</h4>"); 
    document.write("<h4>"+object(1)+"</h4>"); 
    </script>  
</body>  
</html>

輸出：

範例2：

HTML

<!DOCTYPE html> 
<html lang="en"> 
    <head> 
        <meta charset="UTF-8" /> 
        <meta name="viewport"
              content="width=device-width,  
                       initial-scale=1.0"/> 
    </head> 
    <style> 
        div { 
            padding:6px; 
            text-align:center; 
            vertical-align:middle; 
            display:flex; 
            justify-content:center; 
            color:White; 
            width:fit-content; 
            margin-top:2px; 
            height:20px; 
        } 
    </style> 
    <body> 
        <h2 style="color:green;"> 
            GeeksforGeeks 
        </h2> 
        <p>D3.js continuous.domain()</p> 
        <div class="box1"> 
            <span>continuous(0.5)</span> 
        </div> 
        <div class="box2"> 
            <span>continuous(0.4)</span> 
        </div> 
        <div class="box3"> 
            <span>continuous(0.3)</span> 
        </div> 
        <div class="box4"> 
            <span>continuous(0.2)</span> 
        </div> 
        <div class="box5"> 
            <span>continuous(0.1)</span> 
        </div> 
        <!--Fetching from CDN of D3.js -->
        <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> 
        <script> 
            var continuous = d3 
                .scaleLinear() 
                // Domain ranges 0 to 1 
                .domain([-2, -1, 0, 1, 2]) 
                .range(["Blue", "green", "orange", 
                        "Red", "black"]); 
            let color1 = continuous(-2); 
            let color2 = continuous(-1.5); 
            let color3 = continuous(0); 
            let color4 = continuous(1.5); 
            let color5 = continuous(2); 
  
            // Selecting Div using query selector 
            let box1 = document.querySelector(".box1"); 
            let box2 = document.querySelector(".box2"); 
            let box3 = document.querySelector(".box3"); 
            let box4 = document.querySelector(".box4"); 
            let box5 = document.querySelector(".box5"); 
  
            // Setting style and BG color of  
            // the particular DIVs 
            box1.style.backgroundColor = color1; 
            box2.style.backgroundColor = color2; 
            box3.style.backgroundColor = color3; 
            box4.style.backgroundColor = color4; 
            box5.style.backgroundColor = color5; 
        </script> 
    </body> 
</html>

輸出：

相關用法

注：本文由純淨天空篩選整理自tarun007大神的英文原創作品 D3.js continuous.domain() Function。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。