Node.js的引用錯誤：類名沒有定義

Question

我有一個文件bloom.js是如下：

 function Bloom(k, m, n, hashFunction){ 

     if(!m) 
      m = 1000 

     this.m = m; 

     if(!n) 
      n = 100 

     this.n = n; 

     if(!k) 
      k = Math.max(Math.round(m/n * Math.LN2), 1) 

     this.k = k 


     this.insert = function(string){ 

      for(var i = 0; i < this.k; i++){ 

       var index = parseInt(this.hashFunction(i + string), 16) % this.array.length 

       this.array[index] = 1; 
      } 

      return true; 
     } 





    } 
module.exports = Bloom; 

在我main.js這樣做時，我得到錯誤：

var Bloom = require（「./ bloom」）; var bloom = new Bloom（）;

錯誤：

TypeError: Bloom is not a function 
at Object.<anonymous> (J:\code\Main.js:114:13) 
at Module._compile (module.js:409:26) 

我怎樣才能解決這個問題？我也試過出口模塊，但它沒有奏效。

Answer 1

// bloom.js 
    function Bloom(k, m, n, hashFunction){ 

    if(!m) 
     m = 1000 

    this.m = m; 

    if(!n) 
     n = 100 

    this.n = n; 

    if(!k) 
     k = Math.max(Math.round(m/n * Math.LN2), 1) 

    this.k = k 


    this.insert = function(string){ 

     for(var i = 0; i < this.k; i++){ 

      var index = parseInt(this.hashFunction(i + string), 16) % this.array.length 

      this.array[index] = 1; 
     } 

     return true; 
    } 
} 
module.exports = Bloom; 

然後，在main.js：

// NOTE! the variable name here is what matters, not what you defined in bloom.js 
var Bloom = require("./bloom"); 
var bloom = new Bloom();