GlobalEventHandlers.onselectstart - Web API 接口参考 编辑

这是一个实验中的功能
此功能某些浏览器尚在开发中，请参考浏览器兼容性表格以得到在不同浏览器中适合使用的前缀。由于该功能对应的标准文档可能被重新修订，所以在未来版本的浏览器中该功能的语法和行为可能随之改变。

GlobalEventHandlers.onselectstart 表示 selectstart 事件绑定的事件处理器，比如用户在网页上开始选择任意文本内容时触发。

译者注：在输入控件中选择文本时，触发的是控件绑定的 select 事件。

Syntax

obj.onselectstart = function;

Example

document.onselectstart = function() {
  console.log("Selection started!");
};

详细用法参见 Key quote generator 示例。

Specifications

Specification	Status	Comment
Selection API GlobalEventHandlers.onselectstart	Working Draft	Initial definition.

Browser compatibility

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

• Desktop
• Mobile

Feature	Firefox (Gecko)	Chrome	Internet Explorer	Opera	Safari
Basic support	43 (43)[1] 52 (52)[2]	(Yes)	(Yes)	?	1.3

Feature	Firefox Mobile (Gecko)	Android	IE Mobile	Opera Mobile	Safari Mobile
onselectionchange	43.0 (43)[1] 52.0 (52)[2]	?	?	?	?

[1] This is implemented behind the dom.select_events.enabled preference, which defaults to false except on Nightly.

[2] This is now fully enabled on Firefox 52 release version.

See also

• selectstart
• GlobalEventHandlers.onselectionchange