module.exports TypeError 并且没有方法

Question

t1.js

module.exports = function(app) {
    return new obj(app);
};

var obj = function(app) {
    this.app = app;

};

obj.prototype.query = function() {


    return "ok";
};

t2.js

var a = require('./t1.js');

console.log(a.query()); 

执行节点 t2.js

它报告

console.log(a.query());
                  ^
TypeError: Object function (app) {
    return new obj(app);
} has no method 'query'

欢迎您的评论

Answer 1

问题在于require('./t1.js') 返回一个您导出的函数。

解决办法如下：

var a = require('./t1.js')();
/* or...
var myApp = {};
var a = require('./t1.js')(myApp);
*/
console.log(a.query());  //now it's "ok"