Fires on the target element continuously while the user drags the object over a valid drop target. dhtml语法 | Inline HTML | <ELEMENT ondragover = "handler" ... >
| All platforms |
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| Event property | object.ondragover = handler | JScript only |
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| object.ondragover = GetRef("handler") | Visual Basic Scripting Edition (VBScript) 5.0 or later only | | Named script |
<SCRIPT FOR =
object EVENT = ondragover>
| Internet Explorer only |
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Event Information | Bubbles | Yes |
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| Cancels | Yes |
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| To invoke | - Drag the selection over a valid drop target within the browser.
- Drag the selection to a valid drop target within another browser window.
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| Default action |
Calls the associated event handler. |
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Event Object Properties Although event handlers in the DHTML Object Model do not receive parameters directly, a handler can query an event object for data. available properties | altKey |
Sets or retrieves a value that indicates the state of the ALT key. |
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| altLeft |
Sets or retrieves a value that indicates the state of the left ALT key. |
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| cancelBubble |
Sets or retrieves whether the current event should bubble up the hierarchy of event handlers. |
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| clientX |
Sets or retrieves the x-coordinate of the mouse pointer's position relative to the client area of the window, excluding window decorations and scroll bars. |
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| clientY |
Sets or retrieves the y-coordinate of the mouse pointer's position relative to the client area of the window, excluding window decorations and scroll bars. |
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| ctrlKey |
Sets or retrieves the state of the CTRL key. |
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| ctrlLeft |
Sets or retrieves the state of the left CTRL key.
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| dataTransfer |
Provides access to predefined clipboard formats for use in drag-and-drop operations. |
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| offsetX |
Sets or retrieves the x-coordinate of the mouse pointer's position relative to the object firing the event. |
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| offsetY |
Sets or retrieves the y-coordinate of the mouse pointer's position relative to the object firing the event. |
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| returnValue |
Sets or retrieves the return value from the event. |
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| screenX |
Retrieves the x-coordinate of the mouse pointer's position relative to the user's screen. |
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| screenY |
Sets or retrieves the y-coordinate of the mouse pointer's position relative to the user's screen. |
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| shiftLeft |
Retrieves the state of the left SHIFT key.
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| srcElement |
Sets or retrieves the object that fired the event. |
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| type |
Sets or retrieves the event name from the event object. |
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| x |
Sets or retrieves the x-coordinate, in pixels, of the mouse pointer's position relative to a relatively positioned parent element. |
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| y |
Sets or retrieves the y-coordinate, in pixels, of the mouse pointer's position relative to a relatively positioned parent element. |
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Remarks The ondragover event fires on the target object after the ondragenter event has fired. when scripting custom functionality, use the returnvalue property to disable the default action.
是否符合公共标准
There is no public standard that applies to this event.
Applies To |
A,
ACRONYM,
ADDRESS,
AREA,
B,
BDO,
BIG,
BLOCKQUOTE,
BODY,
BUTTON,
CAPTION,
CENTER,
CITE,
CODE,
CUSTOM,
DD,
DEL,
DFN,
DIR,
DIV,
DL,
document,
DT,
EM,
FIELDSET,
FONT,
FORM,
hn,
HR,
I,
IMG,
INPUT type=button,
INPUT type=checkbox,
INPUT type=file,
INPUT type=image,
INPUT type=password,
INPUT type=radio,
INPUT type=reset,
INPUT type=submit,
INPUT type=text,
KBD,
LABEL,
LI,
LISTING,
MAP,
MARQUEE,
MENU,
NOBR,
OBJECT,
OL,
P,
PLAINTEXT,
PRE,
Q,
S,
SAMP,
SELECT,
SMALL,
SPAN,
STRIKE,
STRONG,
SUB,
SUP,
TABLE,
TBODY,
TD,
TEXTAREA,
TR,
TT,
U,
UL,
VAR,
XMP | |
更多语法参考 about dhtml data transfer, ondragstart
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