顯示某筆記錄的某個欄位(node.js+mongodb)

Question

怎麼顯示某筆記錄的某個欄位(node.js+mongodb)?

Answer 1

使用mongoose應該可以吧

Answer 2

雷雷

Answer 3

不妨看下文件：Collection#find（以下程式碼引用自文件）

// A simple query showing skip and limit
var MongoClient = require('mongodb').MongoClient,
  test = require('assert');
MongoClient.connect('mongodb://localhost:27017/test', function(err, db) {

  // Create a collection we want to drop later
  var collection = db.collection('simple_limit_skip_query');
  // Insert a bunch of documents for the testing
  collection.insertMany([{a:1, b:1}, {a:2, b:2}, {a:3, b:3}], {w:1}, function(err, result) {
    test.equal(null, err);

    // Perform a simple find and return all the documents
    collection.find({})
      .skip(1).limit(1).project({b:1}).toArray(function(err, docs) {
        test.equal(null, err);
        test.equal(1, docs.length);
        test.equal(null, docs[0].a);
        test.equal(2, docs[0].b);

        db.close();
    });
  });
});

注意find部分，應該就是你要的內容。