GlobalEventHandlers.onselectstart

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!
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