How to Add Two Values in Bootstrap Range Slider ?

Last Updated : 16 Apr, 2024

The range slider is used to allow users to select values within a defined range. Sliders offer a user-friendly interface to interact, users can select values by sliding a handle along a track. We will focus on the steps that how to add two values in the Bootstrap 5 range slider.

Approach

First, create a html structure and add the CDN links. Set the background color of the page to light using the "bg-light" class in the <body> tag.
In the 'body' section, create a main container using the 'container' class, which serves as the main holding point for all elements.
And inside the container, create an <div> element with classes "text-center", "bg-success", "p-5", and "rounded" to style the content area.
After that include two <input> elements of type range with classes "form-range", "range-primary", and "range-info" for styling the range sliders. You can set their min, max, and value attributes as you need.
Write JavaScript code to update the displayed values whenever the slider values change.

Example: This example shows the implementation of adding two values in the Bootstrap 5 range slider.

HTML

<!DOCTYPE html>
<html lang="en">

<head>
    <title>Dynamic Tabs Example</title>
    <link rel="stylesheet" href=
"https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css">
</head>

<body class="bg-light">
    <div class="container d-flex 
                justify-content-center 
                align-items-center vh-100">
        <div class="text-center bg-success
                    p-5 rounded">
            <h1 class="text-light">
              Adding two values in Bootstrap 5 Range Slider
              </h1>
            <div class="mb-3">
                <input type="range" 
                       class="form-range range-primary" 
                       id="rangeSlider1" min="0"
                       max="1000" value="0">
                <input type="range" 
                       class="form-range mt-3 range-info" 
                       id="rangeSlider2" 
                       min="0" max="1000" value="0">
            </div>
            <div class="text-center">
                <span id="sliderValue1" class="text-light">
                  0
                  </span> 
                  <span class="text-light">
                  + 
                  </span>
                  <span id="sliderValue2" class="text-light">
                0
              </span> 
                  <span class="text-light">
                  =
                  </span> 
                  <span id="sum" class="text-light">
                  0
                  </span>
            </div>
        </div>
    </div>

    <script src=
"https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.bundle.min.js">
      </script>

    <script>
        let range_slide1 = document.getElementById('rangeSlider1');
        let range_slide2 = document.getElementById('rangeSlider2');
        let sliderValue1 = document.getElementById("sliderValue1");
        let sliderValue2 = document.getElementById("sliderValue2");
        let sumDisplay = document.getElementById("sum");

        function updateSum() {
            let val1 = parseInt(range_slide1.value);
            let val2 = parseInt(range_slide2.value);

            let sum = val1 + val2;

            sliderValue1.textContent = val1;
            sliderValue2.textContent = val2;
            sumDisplay.textContent = sum;
        };

        range_slide1.addEventListener('input', function () {
            updateSum();
        });

        range_slide2.addEventListener('input', function () {
            updateSum();
        });

        window.addEventListener('load', updateSum);
    </script>

</body>

</html>