cursor:not-allowed 的使用

今天新发现一个鼠标样式 not-allowed，是一个红色的圈加一个斜杠，表示禁止的意思，似乎IE，chrome firefox 都能够正常显示，很好用

 

 

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详细使用：

Syntax

/* Keyword value only */
cursor: pointer;
cursor: auto;

/* Using URL and coordinates */
cursor:  url(cursor1.png) 4 12, auto;
cursor:  url(cursor2.png) 2 2, pointer;

 

Values

<uri>

A url(…) or a comma separated list url(…), url(…), …, pointing to an image file. More than one <uri>may be provided as fallback, in case some cursor image types are not supported. A non-URL fallback (one or more of the other values) must be at the end of the fallback list. See Using URL values for the cursor property for more details.

<x> <y> 

Optional x- and y-coordinates. Two unit-less non-negative numbers less than 32.

Keyword values

Move mouse over value for testing:

Category	CSS value		Description
General	auto		The browser determines the cursor to display based on the current context. E.g. equivalent to text when hovering text.
	default		Default cursor, typically an arrow.
	none		No cursor is rendered.
Links & status	context-menu		A context menu is available under the cursor. Only IE 10 and up have implemented this on Windows: bug 258960.
	help		Indicating help is available.
	pointer		E.g. used when hovering over links, typically a hand.
	progress		The program is busy in the background but the user can still interact with the interface (unlike for wait).
	wait		The program is busy (sometimes an hourglass or a watch).
Selection	cell		Indicating that cells can be selected.
	crosshair  十字准心		Cross cursor, often used to indicate selection in a bitmap.
	text		Indicating text can be selected, typically an I-beam.
	vertical-text		Indicating that vertical text can be selected, typically a sideways I-beam.
Drag and drop	alias		Indicating an alias or shortcut is to be created.
	copy		Indicating that something can be copied.
	move		The hovered object may be moved.
	no-drop		Cursor showing that a drop is not allowed at the current location. bug 275173 on Windows and Mac OS X, "no-drop is the same as not-allowed".
	not-allowed		Cursor showing that something cannot be done.
Resize & scrolling	all-scroll		Cursor showing that something can be scrolled in any direction (panned). bug 275174 on Windows, "all-scroll is the same as move".
	col-resize		The item/column can be resized horizontally. Often rendered as arrows pointing left and right with a vertical bar separating.
	row-resize		The item/row can be resized vertically. Often rendered as arrows pointing up and down with a horizontal bar separating them.
	n-resize		Some edge is to be moved. For example, the se-resize cursor is used when the movement starts from the south-east corner of the box.
	e-resize
	s-resize
	w-resize
	ne-resize
	nw-resize
	se-resize
	sw-resize
	ew-resize		Indicates a bidirectional resize cursor.
	ns-resize
	nesw-resize
	nwse-resize
Zoom	zoom-in		Indicates that something can be zoomed (magnified) in or out.
	zoom-out
Grab	grab		Indicates that something can be grabbed (dragged to be moved).
	grabbing

Formal syntax

How to read CSS syntax.

[ [ <uri> [<x> <y>]?,]* [ auto | default | none | context-menu | help | pointer | progress | wait | cell | crosshair | text | vertical-text | alias | copy | move | no-drop | not-allowed | e-resize | n-resize | ne-resize | nw-resize | s-resize | se-resize | sw-resize | w-resize | ew-resize | ns-resize | nesw-resize | nwse-resize | col-resize | row-resize | all-scroll | zoom-in | zoom-out | grab | grabbing ] ]

Examples

.foo { cursor: crosshair; }

/* use prefixed-value if "zoom-in" isn't supported */
.bar { cursor: -webkit-zoom-in;  cursor: zoom-in; } 

/* standard cursor value as fallback for url() must be provided (doesn't work without) */
.baz { cursor: url(hyper.cur), auto }