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onscroll Event

DHTML文档教程

Fires when the user repositions the scroll box in the scroll bar on the object.

dhtml语法

Inline HTML<ELEMENT onscroll = "handler" ... > All platforms
Event propertyobject.onscroll = handlerJScript only
object.onscroll = GetRef("handler")Visual Basic Scripting Edition (VBScript) 5.0 or later only
Named script <SCRIPT FOR = object EVENT = onscroll> Internet Explorer only

Event Information

BubblesNo
CancelsNo
To invoke
  • Click and drag the scroll box with the mouse.
  • Click the scroll arrow.
  • Click the scroll bar.
  • Invoke the doScroll method.
  • Press the HOME or END key
  • Press the SPACEBAR key.
  • Press the PAGE UP or PAGE DOWN key.
  • Press the ARROW UP or ARROW DOWN key until scrolling occurs.
Default action Scrolls the contents of an object until new portions of the object become visible.

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.
altLeft Sets or retrieves a value that indicates the state of the left ALT key.
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.
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.
ctrlLeft Sets or retrieves the state of the left CTRL key.
offsetX Sets or retrieves the x-coordinate of the mouse pointer's position relative to the object firing the event.
offsetY Sets or retrieves the y-coordinate of the mouse pointer's position relative to the object firing the event.
screenX Retrieves the x-coordinate of the mouse pointer's position relative to the user's screen.
screenY Sets or retrieves the y-coordinate of the mouse pointer's position relative to the user's screen.
shiftLeft Retrieves the state of the left SHIFT key.
srcElement Sets or retrieves the object that fired the event.
type Sets or retrieves the event name from the event object.
x Sets or retrieves the x-coordinate, in pixels, of the mouse pointer's position relative to a relatively positioned parent element.
y Sets or retrieves the y-coordinate, in pixels, of the mouse pointer's position relative to a relatively positioned parent element.

Remarks

Use the componentfrompoint and doscroll methods to control the scroll bar components.

cascading style sheets (css) enable scrolling on all objects through the overflow property. these objects are not listed in the applies to list for this event.

是否符合公共标准

There is no public standard that applies to this event.

Applies To

APPLET, BDO, BODY, CUSTOM, DIV, EMBED, MAP, MARQUEE, OBJECT, TABLE, TEXTAREA, window

更多语法参考

onmousewheel