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当一个元素不再是拖动操作的直接选择目标时,将会触发dragexit
事件。
General info
- Specification
- HTML5
- Interface
DragEvent
- Bubbles
- Yes
- Cancelable
- No
- Target
- The previous target element.
- Default Action
- None.
Properties
Property | Type | Description |
---|---|---|
target 只读 |
EventTarget |
The element that was underneath the element being dragged. |
type 只读 |
DOMString |
The type of event. |
bubbles 只读 |
Boolean |
Whether the event normally bubbles or not |
cancelable 只读 |
Boolean |
Whether the event is cancellable or not? |
view 只读 |
WindowProxy |
document.defaultView (window of the document) |
detail 只读 |
long (float ) |
0. |
dataTransfer |
DataTransfer | The data that underlies a drag-and-drop operation, known as the drag data store. Protected mode. |
currentTarget 只读 |
EventTarget | The node that had the event listener attached. |
relatedTarget 只读 |
EventTarget | For mouseover , mouseout , mouseenter and mouseleave events: the target of the complementary event (the mouseleave target in the case of a mouseenter event). null otherwise. |
screenX 只读 |
long | The X coordinate of the mouse pointer in global (screen) coordinates. |
screenY 只读 |
long | The Y coordinate of the mouse pointer in global (screen) coordinates. |
clientX 只读 |
long | The X coordinate of the mouse pointer in local (DOM content) coordinates. |
clientY 只读 |
long | The Y coordinate of the mouse pointer in local (DOM content) coordinates. |
button 只读 |
unsigned short | The button number that was pressed when the mouse event was fired: Left button=0, middle button=1 (if present), right button=2. For mice configured for left handed use in which the button actions are reversed the values are instead read from right to left. |
buttons 只读 |
unsigned short | The buttons being pressed when the mouse event was fired: Left button=1, Right button=2, Middle (wheel) button=4, 4th button (typically, "Browser Back" button)=8, 5th button (typically, "Browser Forward" button)=16. If two or more buttons are pressed, returns the logical sum of the values. E.g., if Left button and Right button are pressed, returns 3 (=1 | 2). More info. |
mozPressure 只读 |
float | The amount of pressure applied to a touch or tabdevice when generating the event; this value ranges between 0.0 (minimum pressure) and 1.0 (maximum pressure). |
ctrlKey 只读 |
boolean | true if the control key was down when the event was fired. false otherwise. |
shiftKey 只读 |
boolean | true if the shift key was down when the event was fired. false otherwise. |
altKey 只读 |
boolean | true if the alt key was down when the event was fired. false otherwise. |
metaKey 只读 |
boolean | true if the meta key was down when the event was fired. false otherwise. |
Example
<div class="dropzone">
<div id="draggable" draggable="true" ondragstart="event.dataTransfer.setData('text/plain',null)">
This div is draggable
</div>
</div>
<div class="dropzone"></div>
<div class="dropzone"></div>
<div class="dropzone"></div>
<style>
#draggable {
width: 200px;
height: 20px;
text-align: center;
background: white;
}
.dropzone {
width: 200px;
height: 20px;
background: blueviolet;
margin-bottom: 10px;
padding: 10px;
}
</style>
<script>
var dragged;
/* events fired on the draggable target */
document.addEventListener("drag", function( event ) {
}, false);
document.addEventListener("dragstart", function( event ) {
// store a ref. on the dragged elem
dragged = event.target;
// make it half transparent
event.target.style.opacity = .5;
}, false);
document.addEventListener("dragend", function( event ) {
// reset the transparency
event.target.style.opacity = "";
}, false);
document.addEventListener("dragexit", function( event ) {
// reset the transparency
event.target.style.opacity = "";
}, false);
/* events fired on the drop targets */
document.addEventListener("dragover", function( event ) {
// prevent default to allow drop
event.preventDefault();
}, false);
document.addEventListener("dragenter", function( event ) {
// highlight potential drop target when the draggable element enters it
if ( event.target.className == "dropzone" ) {
event.target.style.background = "purple";
}
}, false);
document.addEventListener("dragleave", function( event ) {
// reset background of potential drop target when the draggable element leaves it
if ( event.target.className == "dropzone" ) {
event.target.style.background = "";
}
}, false);
document.addEventListener("drop", function( event ) {
// prevent default action (open as link for some elements)
event.preventDefault();
// move dragged elem to the selected drop target
if ( event.target.className == "dropzone" ) {
event.target.style.background = "";
dragged.parentNode.removeChild( dragged );
event.target.appendChild( dragged );
}
}, false);
</script>
Specifications
Specification | Status | Comment |
---|---|---|
HTML Living Standard dragexit |
Living Standard | |
HTML 5.1 dragexit |
Recommendation | Not included in W3C HTML5 Recommendation |
Browser compatibility
We're converting our compatibility data into a machine-readable JSON format.
This compatibility table still uses the old format,
because we haven't yet converted the data it contains.
Find out how you can help!
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
---|---|---|---|---|---|
Basic support | 未实现 | 未实现 | 未实现 | 未实现 | 未实现 |
Feature | Android | Android Webview | Chrome for Android | Firefox Mobile (Gecko) | Firefox OS | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|---|---|
Basic support | 未实现 | 未实现 | 未实现 | 未实现 | 未实现 | 未实现 | 未实现 | 未实现 |
Related events