var eventEmitter=require("events").EventEmitter;
var domain=require("domain");

var emitter1=new eventEmitter();

//创建域
var domain1=domain.create();
domain1.on("error",function(err){
    console.log("domain1来处理这个错误："+err.message);
})

显示绑定
domain1.add(emitter1);
添加emitter1对error的监听
emitter1.on("error",1)">(err){
    console.log("emitter1来处理这个错误："+err.message);
})
emitter1.emit("error",1)">new Error("触发错误，指定由emitter1处理"));

emitter1.removeAllListeners("error");移除emitter1对error的监听
emitter1.emit("error",1)">new Error("触发错误，指定由domain1处理"));

var domain2=domain.create();
domain2.on("error",1)">(err){
    console.log("domain2来处理这个错误："+隐式绑定
domain2.run((){
    var emitter2= eventEmitter();
    emitter2.emit("error",1)">new Error("触发错误，指定由domain2处理"));
})

domain1.remove(emitter1);
emitter1.emit("error",1)">new Error("触发错误，系统将崩溃"));