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Non-standard
This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.
Call this method during the handling of a mousedown event to retarget all mouse events to this element until the mouse button is released or document.releaseCapture() is called.
element.setPointerCapture instead, from the Pointer Events API.Syntax
element.setCapture(retargetToElement);
retargetToElement- If
true, all events are targeted directly to this element; iffalse, events can also fire at descendants of this element.
Example
In this example, the current mouse coordinates are drawn while you mouse around after clicking and holding down on an element.
<html>
<head>
<title>Mouse Capture Example</title>
<style type="text/css">
#myButton {
border: solid black 1px;
color: black;
padding: 2px;
box-shadow: black 2px 2px;
}
</style>
<script type="text/javascript">
function init() {
var btn = document.getElementById("myButton");
if (btn.setCapture) {
btn.addEventListener("mousedown", mouseDown, false);
btn.addEventListener("mouseup", mouseUp, false);
} else {
document.getElementById("output").innerHTML
= "Sorry, there appears to be no setCapture support on this browser";
}
}
function mouseDown(e) {
e.target.setCapture();
e.target.addEventListener("mousemove", mouseMoved, false);
}
function mouseUp(e) {
e.target.removeEventListener("mousemove", mouseMoved, false);
}
function mouseMoved(e) {
var output = document.getElementById("output");
output.innerHTML = "Position: " + e.clientX + ", " + e.clientY;
}
</script>
</head>
<body onload="init()">
<p>This is an example of how to use mouse capture on elements in Gecko 2.0.</p>
<p><a id="myButton" href="#">Test Me</a></p>
<div id="output">No events yet</div>
</body>
</html>
Notes
The element may not be scrolled completely to the top or bottom, depending on the layout of other elements.
Specification
Based on Internet Explorer's implementation.
Browser compatibility
| Desktop | Mobile | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Basic support | Chrome No support No | Edge ? | Firefox Full support Yes | IE ? | Opera No support No | Safari ? | WebView Android No support No | Chrome Android No support No | Edge Mobile ? | Firefox Android ? | Opera Android No support No | Safari iOS ? | Samsung Internet Android ? |
Legend
- Full support
- Full support
- No support
- No support
- Compatibility unknown
- Compatibility unknown
- Non-standard. Expect poor cross-browser support.
- Non-standard. Expect poor cross-browser support.