> For the complete documentation index, see [llms.txt](https://socket.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://socket.gitbook.io/docs/4-fu-wu-duan-apiserverapi/4.3-socket/flag_broadcast.md).

# 4.3.22 flag\_broadcast

为后续事件设置一个修饰符，该修饰符使事件数据仅广播到除发送方之外的每个socket。

```javascript
io.on('connection',socket=>{
    socket.broadcast.emit('an event',{some:"data"}) // 除了发送者，其他人都能收到
})
```