mozilla
您的搜索结果

    DOMMouseScroll

    非标准

    The DOM DOMMouseScroll event is fired asynchronously when mouse wheel or similar device is operated and the accumulated scroll amount becomes over 1 line or 1 page since last event. It's represented by the MouseScrollEvent interface.

    If you want to prevent the default action of mouse wheel events, it's not enough to handle only this event on Gecko because If scroll amount by a native mouse wheel event is less than 1 line (or less than 1 page when the system setting is by page scroll), other mouse wheel events may be fired without this event.

    On Gecko 17 (Firefox 17) or later, you need to call prevnetDefault() of wheel events which must be fired for every native event.

    On Gecko 16 or earlier, you need to call preventDefault() of MozMousePixelScroll event which must be fired for every native event.

    Use standardized wheel event if available.

    Browser compatibility

    Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
    Basic support Not supported Unknown (0.9.7) Not supported Not supported Not supported
    Feature Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
    Basic support Not supported 0.0 (0.9.7) Not supported Not supported Not supported

    detail value

    When the event causes scroll up by a page, the detail value is -32768. When the event causes scroll down by a page, the value is 32768. Otherwise, scroll amount in lines.

    Trusted events are never fired with 0.

    If native mouse wheel event indicates the scroll amount only in pixels or scroll speed is customized by user prefs, the value is computed with the line height of the nearest ancestor element which is scrollable. If the font size is smaller than "mousewheel.min_line_scroll_amount", using the pref value as the line height.

    See also

    文档标签和贡献者

    此页面的贡献者有: ziyunfei
    最后编辑者: ziyunfei,