> 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/3-ke-hu-duan-apiclientapi/3.3-socket/socket_binary_value.md).

# 3.3.10 socket.binary(value)

指定发出的数据是否包含二进制。指定时提高性能。可以是`true`的也可以是`false`的。

```javascript
socket.binary(false).emit('an event',{some:"data"});
```