GlobalEventHandlers.onselectionchange
GlobalEventHandlers.onselectionchange 属性表示当一个 selectstart 事件被触发，比如在页面上选中文字变化时，会执行绑定的事件处理器
语法
obj.onselectionchange = function;
示例
js
var selection;
document.onselectionchange = function () {
console.log("New selection made");
selection = document.getSelection();
};
完整例子请参阅Key quote generator demo.
规范
| 规范 |
|---|
| Selection API # selectionchange-event |
| Selection API # dom-globaleventhandlers-onselectionchange |