user-select

非标准
该特性是非标准的，请尽量不要在生产环境中使用它！

Note: Check the compatibility table for the proper prefixes to use in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers.

控制选取能否被选择. This does not have any affect on actual selection operation. This doesn't have any effect on content loaded as chrome, except in textboxes. A similar property 'user-focus' was proposed in early drafts of a predecessor of css3-ui but was rejected by the working group.

Formal syntax: none | text | all | element

(-prefix-)user-select: none;
(-prefix-)user-select: text;
(-prefix-)user-select: all;
(-prefix-)user-select: element;

none: 元素内的文字及其子元素将不会被选中. Selection can contain these elements. Starting with Firefox 21 none behaves like -moz-none, so selection can be re-enabled on sub-elements using -moz-user-select:text.
text: 用户可以选中文字.
-moz-none: The text of the element and sub-elements will appear as if they cannot be selected. Selection can contain these elements. Selection can be re-enabled on sub-elements using -moz-user-select:text. Starting with Firefox 21 none behaves like -moz-none.
all: 在一个HTMl编辑器中，当双击子元素或者上下文时，那么包含该子元素的最顶层元素也会被选中。
element: 火狐和IE中有效. Enables selection to start within the element; however, the selection will be contained by the bounds of that element.

Note: user-select is not currently part of any W3C CSS specification. As such, there are minor differences between the browser implementations. Be sure to test your application across browsers.

Examples

.unselectable {
  -moz-user-select: none;
  -webkit-user-select: none;
  -ms-user-select: none;
}

<body>
  <p class="unselectable">The user is not able to select this text in Firefox, Chrome, Safari and IE.</p>

</body>

Feature	Chrome	Firefox (Gecko)	Internet Explorer	Opera	Safari (WebKit)
Basic support	1-webkit	(Yes)-moz	10-ms	-	(Yes)-webkit
`element`	未实现	(Yes)	(Yes)		未实现

Feature	Android	Firefox Mobile (Gecko)	IE Phone	Opera Mobile	Safari Mobile
Basic support	?	?	?	?	?

user-select

Examples

Browser compatibility

See also

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