channel.unsubscribe(onMessage)

• onMessage <Function> 要删除的先前订阅的处理程序

  \onMessage <Function> The previous subscribed handler to remove

• 返回:<boolean> 如果找到处理程序则为 true,否则为 false。

  \Returns: <boolean> true if the handler was found, false otherwise.

删除以前使用 channel.subscribe(onMessage) 注册到此通道的消息处理程序。

\Remove a message handler previously registered to this channel with channel.subscribe(onMessage).

import diagnostics_channel from 'node:diagnostics_channel';
const channel = diagnostics_channel.channel('my-channel');
function onMessage(message, name) {
 // Received data
}
channel.subscribe(onMessage);
channel.unsubscribe(onMessage);const diagnostics_channel = require('node:diagnostics_channel');
const channel = diagnostics_channel.channel('my-channel');
function onMessage(message, name) {
 // Received data
}
channel.subscribe(onMessage);
channel.unsubscribe(onMessage);拷贝