我有我使用的項(xiàng)目列表forEach。我檢查每個(gè)項(xiàng)目的類型，對(duì)于一個(gè)項(xiàng)目類型，我需要向 mongoDB 發(fā)送請(qǐng)求，然后等待響應(yīng)以進(jìn)一步使用它。如果這很重要 - 我使用 forEach 在超時(shí)時(shí)使用 socket.io 發(fā)射。這是我現(xiàn)在如何迭代列表：questionList.forEach((question) => {    let respName = "";    let respObj = question;    if (question.type === "some_type") {      // some not important code      // respName = "some_name"     } else if (question.type === "some_typeN") {      // some not important code      // respName = "some_nameN"    } else if (question.type === "some_type4") {      respName = "some_name4"      respObj = getBlockStats(handle, block);    } else {      // some not important code      // respName = "some_nameX"    }    setTimeout(() => {      io.emit(respName, respObj);    }, offset);    offset += offsetIncrease;});這是我在循環(huán)中調(diào)用的函數(shù)：const getBlockStats = (handle, block) => {  return GameAnswers.findOne({ handle })    .then(gameAnswers => {      let maxQuesstionInBlock = gameAnswers.answers        .reduce((a, b) => {          return (parseInt(a.ownId) > parseInt(b.ownId) ? a : b)        })      let results = [];      for (let i = 1; i <= maxQuesstionInBlock.ownId; i++) {        let team1AllAnswers = gameAnswers.answers          .filter(el => {            return el.blockId === block          })          .filter((el) => {            return el.team === "team1"          })          .filter((el) => {            return parseInt(el.ownId) === i          });        let team1CorrectAnswers = team1AllAnswers          .filter(el => {            return el.correct === "true"          });        let team2AllAnswers = gameAnswers.answers          .filter(el => {            return el.blockId === block          })          .filter((el) => {            return el.team === "team2"          })          .filter((el) => {            return parseInt(el.ownId) === i          });目前，我對(duì) mongoDB 的請(qǐng)求僅在 forEach 遍歷所有列表之后發(fā)生。因?yàn)閟ome_type4在respObj我有空對(duì)象。我需要在其中得到服務(wù)器的響應(yīng)（即請(qǐng)求停止循環(huán)并等待結(jié)果，然后再進(jìn)一步）