DIR : /home/kozerus/public_html/dd1.html
/home/kozerus/public_html
<!DOCTYPE html>
<html lang=en>
<head>
<title>Using Drag and Drop API to copy and move elements</title>
<!--
This example demonstrates using various HTML Drag and Drop interfaces including:
* Global "draggable" attribute
* Event handlers for dragstart, dragover and drop
* Global event handlers for ondragstart, ondragover and ondrop
* Using the DataTransfer interface to copy and move elements (<div>)
-->
<style>
div {
margin: 0em;
padding: 2em;
}
#src_copy, #src_move {
color: blue;
border: 5px solid black;
width: 300px;
height: 50;
}
#dest_copy, #dest_move {
border: 5px solid blue;
width: 300px;
height: 50;
}
</style>
<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";
// Add the id of the drag source element to the drag data payload so
// it is available when the drop event is fired
ev.dataTransfer.setData("text", ev.target.id);
// Tell the browser both copy and move are possible
ev.effectAllowed = "copyMove";
}
function dragover_handler(ev) {
console.log("dragOver");
// Change the target element's border to signify a drag over event
// has occurred
ev.currentTarget.style.background = "lightblue";
ev.preventDefault();
}
function drop_handler(ev) {
console.log("Drop");
ev.preventDefault();
// Get the id of drag source element (that was added to the drag data
// payload by the dragstart event handler)
var id = ev.dataTransfer.getData("text");
// Only Move the element if the source and destination ids are both "move"
if (id == "src_move" && ev.target.id == "dest_move")
ev.target.appendChild(document.getElementById(id));
// Copy the element if the source and destination ids are both "copy"
if (id == "src_copy" && ev.target.id == "dest_copy") {
var nodeCopy = document.getElementById(id).cloneNode(true);
nodeCopy.id = "newId";
ev.target.appendChild(nodeCopy);
}
}
function dragend_handler(ev) {
console.log("dragEnd");
// Restore source's border
ev.target.style.border = "solid black";
// Remove all of the drag data
ev.dataTransfer.clearData();
}
</script>
</head>
<body>
<h1>Drag and Drop: Copy and Move elements with <code>DataTransfer</code></h1>
<div draggable="true" id="src_copy" ondragstart="dragstart_handler(event);" ondragend="dragend_handler(event);">
Select this element and drag to the <strong>Copy Drop Zone</strong>.
</div>
<div id="dest_copy" ondrop="drop_handler(event);" ondragover="dragover_handler(event);"><strong>Copy Drop Zone</strong></div>
<div draggable="true" id="src_move" ondragstart="dragstart_handler(event);" ondragend="dragend_handler(event);">
Select this element and drag to the <strong>Move Drop Zone</strong>.
</div>
<div id="dest_move" ondrop="drop_handler(event);" ondragover="dragover_handler(event);"><strong>Move Drop Zone</strong></div>
</body>
</html>
//
koh5_pano
Drag mouse to navigate.
Navigation
- Left/Right Mouse drag: Changes camera heading.
- Up/Sown Mouse drag: Changes camera pitch.
- Scroll wheel: Changes camera field of view.
- I-Key: Displays Info panel with canvas size, image size and FPS.
17.Aug.2010, Martin Wengenmayer