代碼未執行完整腳本

我編寫了一些代碼來檢查列表，並檢查列表中的每個項目是否存在於另一個列表中。如果找不到該項目，則會將其添加到數據庫中。代碼未執行完整腳本

掃描代碼是正確的（說db.scan的部分），但在某個地方，代碼沒有經過，因爲它沒有執行console.log部分（它說：「輸入日誌到數據庫.. 「標題文章的」當我執行這個代碼，什麼都不會發生，至少沒有錯誤...但它甚至沒有記錄該部分的console.log這樣的東西是錯誤的。

// accessing the database 
function DatabaseTime(sourcesDates, timeAdded, links, titles, descriptions) { 
    sourcesDates = sourcesDates; 
    links = links; 
    titles = titles;  // this will be used to check on our articles 
    descriptions = descriptions; 

    var autoParams; 
    var databaseOperation = function (sourcesDates, timeAdded, links, titles, descriptions) { 
     var scanParams = { TableName: "Rnews" } 
      // using code to setup for accessing the 2nd list 
      db.scan(scanParams, function(err, scanData) { // scanData = the 2nd list we are going to work with 
       var counter = 0; // just a way to help make my code more accurate as seen later in the loops 
       var counter2 = 0; 
       // this is the first list iterating on 
       for (var i = 0; i < links.length; i++) { 
        counter = 0; 
        // looping through items in second list 
        for (var x = 0; x < scanData.Items.length; x++) { 
         // if article is not in db 
         if (titles[i] !== scanData.Items[x].title) { 
          continue; 
         } 
         else if (titles[i] === scanData.Items[x].title) { 
          // intention is to immediately move to the next item in the first list if this block executes 
          console.log("Article found: \"" + titles[i] + "\". Not proceeding anymore with article."); 
          counter++; 
          break; 
         } else { 
          // if this article isnt found anywhere in the list we are checking on, add to database 
          if (x === scanData.Items.length && counter !== 0) { 
           autoParams = { 
            TableName: "Rnews", 
            Item: { 
             title: titles[i], 
             source: sourcesDates[i], 
             url: links[i], 
             description: descriptions[i], 
             lastAddOrUpdated: dbTimeStamp, 
             timePublish: timeAdded[i] 
            } 
           } 
           console.log("Entering journal to database: " + titles[i]); 
           db.put(autoParams, function(err, data) { 
            if(err) throw err; 
           }); 
          //} 
         } 
        } 
       } 
      } 
      }); 
     //console.log("Complete"); 
    }; 
    databaseOperation(sourcesDates, timeAdded, links, titles, descriptions); 
} 
//// END

來源

2016-11-27 Chris

使用您的調試器來遍歷代碼並查看它失敗的位置。（['node-inspector']（https://www.npmjs.com/package/node-inspector）就是NodeJS的一個調試器。） –

謝謝我將嘗試 – Chris

專業提示：代碼打開它的一面是而不是它是多麼棒的圖表。以快速的方式思考這段代碼是不可能的。 –

你從來沒有調用函數DatabaseTime。你的代碼只是聲明這個函數並且什麼也不做。爲了執行這個函數，你必須調用它。

來源

2016-11-27 18:49:32

代碼未執行完整腳本

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