How to scroll the page up or down using anchor element in jQuery ?

Last Updated : 24 Apr, 2020

The problem is to include a slide effect whenever we click a local anchor and we want to scroll up or down the page accordingly. Earlier we can do it natively by using CSS property. Syntax:

a {
  scroll-behavior: smooth;
}

Now with the help of jQuery, we can do it by using the following two methods:

jQuery.offset() method: This method allows us to retrieve the current position of any element relative to the document. This method is particularly useful when we want to perform drag and drop operations or when we want to position the new element on top of another existing element.
jQuery.animate() method: This method allows to create animations on any numeric CSS property. CSS object is required in order to use the method. We can use this to animate both style and non-style properties.

Example:

html

<!DOCTYPE html>
<html>

<head>
    <title>
        How to scroll the page up or down
        using anchor element in jQuery ?
    </title>

    <script src=
"https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js">
    </script>

    <script>
        $(document).ready(function () {

            // Add smooth scrolling to all links
            $("a").on('click', function (event) {

                // Make sure this.hash has a value
                // before overriding default behavior
                if (this.hash !== "") {

                    // Prevent default anchor
                    // click behavior
                    event.preventDefault();

                    // Store hash
                    var hash = this.hash;

                    // Using jQuery's animate() method 
                    // to add smooth page scroll
                    // The optional number (800) specifies
                    // the number of milliseconds it takes
                    // to scroll to the specified area
                    $('html, body').animate({
                        scrollTop: $(hash).offset().top
                    }, 500, function () {

                        // Add hash (#) to URL when done 
                        // scrolling (default click behavior)
                        window.location.hash = hash;
                    });
                } // End if
            });
        });
    </script>

    <style>
        body,
        html, .primary {
            height: 150%;
        }

        section {
            min-height: 150%;
        }
    </style>
</head>

<body>
    <div>
        <a href="#section1">
            Click Me to Smooth Scroll
            to Section 1 Below
        </a>
    </div>
    <div>
        <a href="#section2">
            Click Me to Smooth Scroll
            to Section 2 Below
        </a>
    </div>
    <div>
        <a href="#section3">
            Click Me to Smooth Scroll
            to Section 3 Below
        </a>
    </div>

    <div class="primary">
        <section></section>
    </div>
    
    <div class="primary" id="section1">
        <section style="background-color:cyan"></section>
    </div>
    
    <div class="primary" id="section2">
        <section style="background-color:yellow"></section>
    </div>
    
    <div class="primary" id="section3">
        <section style="background-color:red"></section>
    </div>
</body>

</html>