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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Drag and Drop</title>
<style>
div {
margin: 0em;
padding: 2em;
}
#source {
color: blue;
border: 1px solid black;
}
#target {
border: 1px solid black;
}
</style>
</head>
<body>
<section>
<h1>
<code>DataTransfer.setData()</code> <br>
<code>DataTransfer.getData()</code> <br>
<code>DataTransfer.clearData()</code>
</h1>
<div>
<p id="source" ondragstart="dragstart_handler(event);" draggable="true">
Select this element, drag it to the Drop Zone and then release the selection to move the element.
</p>
</div>
<div id="target" ondrop="drop_handler(event);" ondragover="dragover_handler(event);">
Drop Zone
</div>
</section>
<!-- js -->
<script>
function dragstart_handler(ev) {
console.log("dragStart");
// Change the source element's background color to signify drag has started
ev.currentTarget.style.border = "dashed";
// Set the drag's format and data. Use the event target's id for the data
ev.dataTransfer.setData("text/plain", ev.target.id);
}
function dragover_handler(ev) {
console.log("dragOver");
// prevent Default event
ev.preventDefault();
}
function drop_handler(ev) {
console.log("Drop");
ev.preventDefault();
// Get the data, which is the id of the drop target
var data = ev.dataTransfer.getData("text");
console.log("data",data);
// appendChild
ev.target.appendChild(document.getElementById(data));
// Clear the drag data cache (for all formats/types)
ev.dataTransfer.clearData();
}
</script>
</body>
</html>
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