JavaScript HTML DOM Event: dragstart

The dragstart event occurs when dragging begins. In the handler you set data with dataTransfer.setData() and (optionally) restrict allowed effects via dataTransfer.effectAllowed. A visual hint (e.g., a border/outline) is often added to show that the element is being dragged.

EXAMPLE

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>ondragstart</title>
    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">

    <style>
        p {
            width: 300px;
            height: 80px;
            text-align: center;
            line-height: 5;
            border: 1px solid lightgrey;
            border-radius: 6px;
        }
    </style>
</head>
<body>
    <h1 id="a"></h1>
    <p id="b" ondragstart="start()" ondragend="stop()" draggable="true">
        Welcome to the JavaScript tutorial!
    </p>
   
    <script>
        function start() {
            document.getElementById("a").innerHTML = "You started dragging the content.";
        }
    
        function stop() {
            document.getElementById("a").innerHTML = "You are not dragging the content.";
        }
    </script>
</body>
</html>

RESULT