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<!doctype html>
<html>
<head>
<title>Drag and drop passing over body with all events handled at body</title>
<style type="text/css">
div:first-child {
height: 100px;
width: 100px;
background: orange;
display: inline-block;
}
div:first-child + div {
height: 100px;
width: 100px;
margin-left: 200px;
background: blue;
display: inline-block;
}
</style>
<script type="text/javascript">
window.onload = function () {
var drag = document.getElementsByTagName('div')[0], drop = document.getElementsByTagName('div')[1], sequence = [];
function targ(el) {
if( el == drag ) { return 'drag'; }
else if( el == drop ) { return 'drop'; }
else if( el == document.body ) { return 'body'; }
else { return el; }
}
document.body.ondragstart = function (e) {
e.dataTransfer.setData('text','data');
e.dataTransfer.effectAllowed = 'copy';
};
document.body.ondragenter = function (e) {
e.preventDefault();
sequence[sequence.length] = targ(e.target)+'.ondragenter';
};
document.body.ondragover = function (e) {
e.preventDefault();
var seqname = targ(e.target)+'.ondragover';
if( sequence[sequence.length-1] != seqname ) {
sequence[sequence.length] = seqname;
}
};
document.body.ondrop = function (e) {
e.preventDefault();
sequence[sequence.length] = targ(e.target)+'.ondrop';
sequence[sequence.length] = e.dataTransfer.getData('text');
};
document.body.ondragend = function (e) {
sequence[sequence.length] = targ(e.target)+'.ondragend';
sequence = sequence.join('=&gt;')
var desiredsequence = (['drag.ondragenter','drag.ondragover','body.ondragenter','body.ondragover','drop.ondragenter','drop.ondragover','drop.ondrop','data','drag.ondragend']).join('=&gt;')
if( sequence == desiredsequence ) {
document.getElementsByTagName('div')[2].innerHTML = 'PASS';
} else {
document.getElementsByTagName('div')[2].innerHTML = 'FAIL, got:<br>'+sequence+'<br>instead of:<br>'+desiredsequence;
}
};
};
</script>
</head>
<body>
<div draggable="true"></div><div></div>
<div>&nbsp;</div>
<p>Drag the orange square onto the blue square and release it. For the entire duration of the drag, if supported by the platform, the mouse cursor should show as a drop-allowed or drop-copy-allowed cursor.</p>
<noscript><p>Enable JavaScript and reload</p></noscript>
</body>
</html>