Dylan0916

Splashtop Inc. 前端工程師測驗題

一、執行順序

1. 元件載入時: B -> D -> E -> A -> C -> B -> D -> A
2. 按下按鈕: D -> E -> A

二、時間複雜度估算

1. 請估算 getTeamLeaderInformation 的平均時間複雜度: O(n ^ 4)

Dylan0916

const axios = require("axios");
+ const aws = require("aws-sdk");

+ const s3 = new aws.S3();
+ const bucketName = "test-firebase-dynamic-links";
+ const s3FileName = "links_map.json";

+ function getDataFromS3() {
+   const params = {
+     Bucket: bucketName,

Dylan0916

const aws = require("aws-sdk");

const s3 = new aws.S3();
const bucketName = "test-firebase-dynamic-links";
const s3FileName = "links_map.json";

function getDataFromS3() {
  const params = {
    Bucket: bucketName,
    Key: s3FileName,

Dylan0916

const axios = require("axios");

const headers = {
  "Access-Control-Allow-Headers": "Content-Type",
  "Access-Control-Allow-Origin": "*",
  "Access-Control-Allow-Methods": "OPTIONS,POST,GET",
}

exports.handler = async (event) => {
  const queryString = event.queryStringParameters || {};

Dylan0916

import { Machine, interpret } from 'xstate';

// This machine is completely decoupled from React
export const toggleMachine = Machine({
  id: 'toggle',
  initial: 'inactive',
  states: {
    inactive: {
      on: { TOGGLE: 'active' }
    },

Dylan0916

firebase.database().ref('user-datas').on('value', snapshot => {
    console.log(snapshot.val());
});

Dylan0916

<button onclick="setData()">set</button>

<script>
  function setData() {
    firebase.database().ref('user-datas').set({
      username: 'dylan',
      email: '[email protected]'
    });
  }
</script>

Dylan0916

<button onclick="getData()">get</button>

<script>
  function getData() {
    const docs = db.collection("to-do-list").doc("to-do");

    docs
      .get()
      .then(doc => {
        if (doc.exists) {

Dylan0916

<button onclick="setData()">set</button>

<script>
  const db = firebase.firestore();

  function setData() {
    db.collection("to-do-list").doc("to-do").set({
      item: "處理 ...",
      date: "20XX-XX-XX",
      desctiption: "...",

Dylan0916

// 一般寫法
let temp = true

if (temp) {
  todoSomething()
}

// 短路求值
temp && todoSomething()