有一点我想问，关于nodejs中的继承
很多都是exports，而没有继承，我想问下，exports方式有没有提供继承！ 还是说继承的话要使用global来应用！ 不知道大家有没有遇到需要继承的情况！
11 回复
继承用**util.inherits(constructor, superConstructor)**嘛，官方文档中的例子：
var util = require("util");
var events = require("events");
function MyStream() {
events.EventEmitter.call(this);
}
util.inherits(MyStream, events.EventEmitter);
MyStream.prototype.write = function(data) {
this.emit("data", data);
}
var stream = new MyStream();
console.log(stream instanceof events.EventEmitter); // true
console.log(MyStream.super_ === events.EventEmitter); // true
stream.on("data", function(data) {
console.log('Received data: "' + data + '"');
})
stream.write("It works!"); // Received data: "It works!"
var classA = require("./classa");
function classB() {
classA.call(this);
}
util.inherits(classB, classA);
classB.prototype.fun = function() {
};
exports = module.exports = classB;
