Kết quả xuất ra của các câu lệnh dưới đây là gì? let login = false; let outputHolder = ""; let userOkay = login ? outputHolder = "logout" : outputHolder = "login"; console.log(userOkay);
Question
Kết quả xuất ra của các câu lệnh dưới đây là gì? let login = false; let outputHolder = ""; let userOkay = login ? outputHolder = "logout" : outputHolder = "login"; console.log(userOkay);
Solution
Kết quả xuất ra của các câu lệnh trên là "login".
Giải thích:
- Đầu tiên, biến
loginđược khai báo với giá trị làfalse. - Biến
outputHolderđược khai báo với giá trị là một chuỗi rỗng. - Biến
userOkayđược khai báo và gán giá trị dựa trên điều kiện của toán tử ba ngôi. NếuloginlàtruethìoutputHoldersẽ được gán là "logout", nếu không thìoutputHoldersẽ được gán là "login". Trong trường hợp này, vìloginlàfalsenênoutputHoldersẽ được gán là "login". console.log(userOkay)sẽ in ra giá trị củauserOkay, tức là "login".
Similar Questions
1 . Pertanyaan :Untuk membersihkan jendela terminal. Jadi isi jendela terminal akan kosong, bisa menggunakan perintah clear, ada shortcut lain bisa menggunakan perintah…A. ctrl + CB. ctrl + AC. ctrl + VD. ctrl + BE. ctrl + L2 . Pertanyaan :Melihat log login di /var/log/auth.log bisa menggunakan perintahA. cat /var/log/auth.log | tail -100B. sed -i ‘s/root/root/g’ /var/log/auth.logC. scp /var/log/auth.logD. git add /var/log/auth.logE. rm -rf /var/log/auth.log3 . Pertanyaan :Program pengarsipan atau untuk mekompress beberapa file menjadi satu file, dengan ekstensi "nama file.tar”, menggunakan perintah…A. aptB. nanoC. killD. tarE. zip4 . Pertanyaan :seseorang ingin menginstall git bash, program mana yang dipakai?A. vimB. nanoC. aptD. killE. top5 . Pertanyaan :Melihat log login di /var/log/auth.log bisa menggunakan perintahA. rm -rf /var/log/auth.logB. sed -i ‘s/root/root/g’ /var/log/auth.logC. cat /var/log/auth.log | tail -100D. scp /var/log/auth.logE. git add /var/log/auth.log6 . Pertanyaan :Menghentikan program yang berjalan menggunakan signal.menggunakan perintah?A. nanoB. aptC. topD. vimE. kill7 . Pertanyaan :mengkompres folder atau beberapa file didalam folder menjadi file.zip dengan perintah?A. zip -r [folder asal] file.zipB. zip -r file.zipC. zip -r file.zipD. folder asal> zip -r file.zipE. zip file.zip8 . Pertanyaan :Jika ingin mengubah file configurasi ssh seperti merubah port ssh itu sendiri kita membutuhkan file konfigurasi nya, dimanakah file konfigurasi ssh tersebut…A. etc/ssh/sshd_configirationB. /etc/ssh/config_sshdC. /etc/ssh/ssh_configD. /etc/ssh/sshd_configE. /etc/ssh/sshd_banner9 . Pertanyaan :Mengirim folder dari cloud ke cloud lain bisa dengan menggunakan perintah?A. scp <user> <folder>@<ip server/cloud>:<folder tujuan>B. scp <folder> <user>@<ip server/cloud>:<folder tujuan>C. scp <folder> <ip server/cloud>:<folder tujuan>@<user>D. scp -r <folder> <folder>@<ip server/cloud>:<user>E. scp -r <folder> <user>@<ip server/cloud>:<folder tujuan>10 . Pertanyaan :Program pengarsipan atau untuk mekompress beberapa file menjadi satu file, dengan ekstensi "nama file.zip”, menggunakan perintah…A. killB. nanoC. aptD. tarE. zipSubmit Quiz
import React, { Component } from 'react'; // Message Component function Message(props) { if (props.isLoggedIn) return <h1>Welcome Back!!!</h1>; else return <h1>Please Login First!!!</h1>; } // Login Component function Login(props) { return( <button onClick = {props.clickInfo}> Login </button> ); } // Logout Component function Logout(props) { return( <button onClick = {props.clickInfo}> Logout </button> ); } class App extends Component{ constructor(props) { super(props); this.handleLogin = this.handleLogin.bind(this); this.handleLogout = this.handleLogout.bind(this); this.state = {isLoggedIn : false}; } handleLogin() { this.setState({isLoggedIn : true}); } handleLogout() { this.setState({isLoggedIn : false}); } render(){ return( <div> <h1> Conditional Rendering Example </h1> <Message isLoggedIn = {this.state.isLoggedIn}/> { (this.state.isLoggedIn)?( <Logout clickInfo = {this.handleLogout} /> ) : ( <Login clickInfo = {this.handleLogin} /> ) } </div> ); } } export default App; Output:When you execute the above code, you will get the following screen.
Problem statementSend feedbackYou are working on a web application that involves managing user authentication.Objective:Implement the login method on the User prototype.This method should take two parameters:username and password.The method should check if the provided username and password match the systemCredentials. If they match, it should log "Login successful!" to the console. Otherwise, it should log "Login failed!".Lastly, modify the login method by using the bind method to create a reusable function named loginFunction that is bound to the systemCredentials object.
What would be logged to the console by the following block of code?let a = "ILoveProgramming"; let result = a.substring(3, 6);console.log(result);vePILogniing
What would get logged to the console by the following block of code?let word = "world";if (word.length < 5) { console.log("less than 5");} else if (word.length > 5) { console.log("more than 5");} else { console.log("exactly 5");}less than 5more than 5exactly 5
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.