你可以在模式的底部放置一个timestamps标志，这样，每次创建文档时，你都会得到创建日期-createdAt，每次修改文档时，你都会得到更新日期-updatedAt。

const mongoose = require("mongoose");

const TaskSchema = new mongoose.Schema(
  {
    task: {
      type: String,
      required: [true, "Please enter a task name"],
    },
    info: {
      type: String,
      required: [true, "Please provide details for the task"],
    },
    due: {
      type: Date,
      required: [true, "Please provide a due date"],
    },
    complete: {
      type: Boolean,
      required: true,
      default: false,
    },
    createdBy: {
      type: mongoose.Types.ObjectId,
      ref: "User",
      required: [true, "please provide user"],
    },
  },
  { timestamps: true }
);

module.exports = mongoose.model("Task", TaskSchema);

在上面的示例中，您可以看到时间戳标志被设置为true，因此当您搜索任务文档时，您将得到如下内容：