我试图“桥接”两个事件侦听器,以通过一个事件触发它们。此外,在此“链”中,我可以将额外的值作为参数传递给后续的侦听器。
我尝试通过以下方式实现它
var events = require('events');
var receiv = new events.EventEmitter();
var midl = new events.EventEmitter();
receiv.on("test", function() {
console.log("HERE", arguments);
});
midl.on("test", receiv.on.bind(receiv, "test", "foo", "bar"));
midl.emit("test", 123);
然而,当我遇到以下错误时,这种方法似乎使EventEmitter出错了
TypeError: listener must be a function
at TypeError (<anonymous>)
at EventEmitter.addListener (events.js:130:11)
at EventEmitter.emit (events.js:95:17)
at Object.<anonymous> (myEventTest.js:12:6)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Function.Module.runMain (module.js:497:10)
at startup (node.js:119:16)
干杯。
附言我使用节点v0.10.5
最佳答案
抱歉,我的回答是正确的,但我找到了解决方案。
var events = require('events');
var receiv = new events.EventEmitter();
var midl = new events.EventEmitter();
receiv.on("test", function() {
console.log("HERE", arguments);
});
midl.on("test", receiv.emit.bind(receiv, "test", "foo", "bar"));
midl.emit("test", 123);
关于javascript - 用一个事件桥接两个事件监听器,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/16636488/