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D3.js color.brighter() Function

  • Last Updated : 28 Jul, 2020

The color.brighter() function of D3.js is used to make a copy of the color with some extra brightness or darkness in the original color.

Syntax:

color.brighter(k)

Parameter: This function accepts only one parameter k is the amount of brightness required in the original color. It is the Integer value.

Return Values: It returns the object.

Example 1: When the value of k is not given



HTML




<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8" />
        <meta
            name="viewport"
            content="width=device-width, 
                     initial-scale=1.0"/>
        <title>D3.js color.brighter() Function</title>
    </head>
    <style>
        .box {
            height: 100px;
            width: 100px;
        }
        .box1 {
            height: 100px;
            width: 100px;
        }
    </style>
    <body>
        Color without color.brighter() property
        <div class="box"></div>
        Color with color.brighter() property
        <div class="box1"></div>
        <!--fetching from CDN of D3.js -->
        <script type="text/javascript" src=
                "https://d3js.org/d3.v4.min.js">
        </script>
        <script>
            let box = document.querySelector(".box");
            let box1 = document.querySelector(".box1");
            var color = d3.color("green");
            box.style.backgroundColor = 
              `rgb(${color.r},${color.g},${color.b})`;
            var color = color.brighter();
            box1.style.backgroundColor = 
              `rgb(${color.r},${color.g},${color.b})`;
        </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" />
        <title>D3.js color.brighter() Function</title>
    </head>
    <style>
        .box {
            height: 100px;
            width: 100px;
        }
        .box1 {
            height: 100px;
            width: 100px;
        }
    </style>
    <body>
        Color without color.brighter() property
        <div class="box"></div>
        Color with color.brighter(10) property
        <div class="box1"></div>
        <!--fetching from CDN of D3.js -->
        <script type="text/javascript" src=
                "https://d3js.org/d3.v4.min.js">
        </script>
        <script>
            let box = document.querySelector(".box");
            let box1 = document.querySelector(".box1");
            var color = d3.color("green");
            box.style.backgroundColor = 
              `rgb(${color.r},${color.g},${color.b})`;
            var color = color.brighter(10);
            box1.style.backgroundColor = 
              `rgb(${color.r},${color.g},${color.b})`;
        </script>
    </body>
</html>

Output:

Example 3: When value of k < 0

HTML




<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8" />
        <meta name="viewport" 
              content="width=device-width, 
                       initial-scale=1.0" />
        <title>D3.js color.brighter() Function</title>
    </head>
    <style>
        .box {
            height: 100px;
            width: 100px;
        }
        .box1 {
            height: 100px;
            width: 100px;
        }
    </style>
    <body>
        Color without color.brighter() property
        <div class="box"></div>
        Color with color.brighter(-10) property
        <div class="box1"></div>
        <!--fetching from CDN of D3.js -->
        <script type="text/javascript" src=
                "https://d3js.org/d3.v4.min.js">
        </script>
        <script>
            let box = document.querySelector(".box");
            let box1 = document.querySelector(".box1");
            var color = d3.color("green");
            box.style.backgroundColor = 
              `rgb(${color.r},${color.g},${color.b})`;
            var color = color.brighter(-10);
            box1.style.backgroundColor =
              `rgb(${color.r},${color.g},${color.b})`;
        </script>
    </body>
</html>

Output:




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