scroll-snap-align · Properties · CSS

The scroll-snap-align CSS property specifies the box's snap position as an alignment of its snap area within its snap container's snapport.

Syntax

CSS

scroll-snap-align: value;

JS

object.style.scrollSnapAlign = "value";

Values

<'scroll-snap-align'> = [ none | start | end | center ]{1,2}

none

This box does not define a snap position in the specified axis.

start

Start alignment of this box's scroll snap area within the scroll container's snapport is a snap position in the specified axis.

end

End alignment of this box's scroll snap area within the scroll container's snapport is a snap position in the specified axis.

center

Center alignment of this box's scroll snap area within the scroll container's snapport is a snap position in the specified axis.

Initial

none

<!doctype html>
<html>
<head>
    <style>
        .myclass
        {
            display: grid;
            grid-template-columns: repeat(3, 75%);
            grid-template-rows: repeat(3, 75%);
            height: 50vh;
            overflow: scroll;
            scroll-snap-type: both mandatory;
            width: 50%;
        }
        .myclass > div
        {
            background-image: linear-gradient(135deg, white, lightgray);
        }
    </style>
</head>
<body>
    <button onmouseover="myfunction(innerHTML)">initial</button>
    <button onmouseover="myfunction(innerHTML)">none</button>
    <button onmouseover="myfunction(innerHTML)">start</button>
    <button onmouseover="myfunction(innerHTML)">end</button>
    <button onmouseover="myfunction(innerHTML)">center</button>
    <div class="myclass">
        <div>scroll-snap-align</div>
        <div>scroll-snap-align</div>
        <div>scroll-snap-align</div>
        <div>scroll-snap-align</div>
        <div>scroll-snap-align</div>
        <div>scroll-snap-align</div>
        <div>scroll-snap-align</div>
        <div>scroll-snap-align</div>
        <div>scroll-snap-align</div>
    </div>
    <script>
        function myfunction(myparameter)
        {
            const myelements = document.querySelectorAll(".myclass > div");
            for(let myelement of myelements)
            {
                myelement.style.scrollSnapAlign = myparameter;
            }
        }
    </script>
</body>
</html>

6 · JS · Internal

<!doctype html>
<html>
<head>
    <style>
        .myclass
        {
            display: grid;
            grid-template-columns: repeat(3, 75%);
            grid-template-rows: repeat(3, 75%);
            height: 50vh;
            overflow: scroll;
            scroll-snap-type: both mandatory;
            width: 50%;
        }
        .myclass > div
        {
            background-image: linear-gradient(135deg, white, lightgray);
        }
    </style>
</head>
<body>
    <button>initial</button>
    <button>none</button>
    <button>start</button>
    <button>end</button>
    <button>center</button>
    <div class="myclass">
        <div>scroll-snap-align</div>
        <div>scroll-snap-align</div>
        <div>scroll-snap-align</div>
        <div>scroll-snap-align</div>
        <div>scroll-snap-align</div>
        <div>scroll-snap-align</div>
        <div>scroll-snap-align</div>
        <div>scroll-snap-align</div>
        <div>scroll-snap-align</div>
    </div>
    <script>
        function myfunction(myparameter)
        {
            const myelements = document.querySelectorAll(".myclass > div");
            for(let myelement of myelements)
            {
                myelement.style.scrollSnapAlign = myparameter;
            }
        }
        const myelements = document.querySelectorAll("button");
        for(let myelement of myelements)
        {
            myelement.addEventListener("mouseover", function(){myfunction(myelement.innerHTML)});
        }
    </script>
</body>
</html>