The continuous.domain() function is used to set the scale’s domain to the specified array of numbers. The array specified here contains two or more than two elements in it.
Syntax:
continuous.domain([domain]);
Parameters: This function accepts a single parameter as mentioned above and described below.
- [domain]: This is an array that takes two or more values that specify the domain.
Return Values: This function does not return anything.
Below examples illustrate the D3.js continuous.domain() function in JavaScript:
Example 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= </script> <script src= </script> <script src= </script> <script src= </script> </head> <body style="text-align: center;"> <h2 style="color: green;"> Geeksforneveropen </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> |
Output: 
Example 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;"> neveropen </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= </script> <script src= </script> <script src= </script> <script src= </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> |
Output:
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