Sign in Welcome! Log into your account your username your password Forgot your password? Get help Password recovery Recover your password your email A password will be e-mailed to you. HomeArenaQuiz #4 ArenaQuiz Quiz #4 By Coding Artist 23rd September 2022 0 414 Share Facebook Twitter Pinterest WhatsApp 130 Created by Coding Artist Quiz #4 1 / 10 let arr1 = [1, 2, 3];let arr2 = [4, 5];console.log(arr1 + arr2);What will the above code output to the console? NaN Throws An Error 1, 2, 3, 4, 5 1, 2, 34, 5 2 / 10 const arr = ["Hello", "Hi", "Hey"];arr[0] = "Bye";console.log(arr);What will the above code output to the console? TypeError: Assignment to constant variable. ["Hello", "Hi", "Hey"] ['Bye', 'Hi', 'Hey'] 3 / 10 let a = NaN;let b = 19;console.log(a + b);What will the above code output to the console? NaN19 19 NaN null 4 / 10 let a = "Hello";let b = a.padEnd(8, "o");console.log(b);What will the above code output to the console? Hellooooooooo Helloooo ooooooooHello Hello oooooooo 5 / 10 let a = "Coding Artist"; let b = new String("Coding Artist"); console.log(a == b);What will the above code output to the console? true false 6 / 10 let arr = [9, 3, 6, 54, 20];arr.sort();console.log(arr);What will the above code output to the console? [20, 3, 54, 6, 9] [9, 6, 54, 3, 20] [54, 20, 9, 6, 3] [3, 6, 9, 20, 54] 7 / 10 let a = "Coding Artist";let b = new String("Coding Artist");console.log(a === b);What will the above code output to the console? true false 8 / 10 let str = 'That\'s mine';console.log(str);What will the above code output to the console? That\ That s mine That's Mine s mine 9 / 10 let a = "Tall";a[0] = "W";console.log(a);What will the above code output to the console? Wall Throws an error Tall 10 / 10 let a = NaN;let b = "19";console.log(a + b); nul NaN NaN19 19 Your score is The average score is 44% LinkedIn Facebook Twitter VKontakte 0% Restart quiz Tagscss advanced quizcss basic quizhtml quizhtml quiz bankjavascript advanced quizjavascript quizquiz Share Facebook Twitter Pinterest WhatsApp Previous articleMCQ – 23/9/22Next articleBlack Sheep Animation Coding Artist RELATED ARTICLES Arena Javascript Quiz For Intermediates 24th July 2023 Arena Javascript Quiz For Beginners 16th July 2023 Arena MCQ – 10/2/23 10th February 2023 LEAVE A REPLY Cancel reply Comment: Please enter your comment! Name:* Please enter your name here Email:* You have entered an incorrect email address! Please enter your email address here Website: Save my name, email, and website in this browser for the next time I comment. Please enter an answer in digits:18 − twelve = Most Popular JavaScript Cheat Sheet – Free PDF Download 23rd May 2026 Build a Fun Balloon Pop Game Using HTML, CSS, and JavaScript 3rd July 2025 Build an Analog Clock with HTML, CSS, and JavaScript 3rd July 2025 Responsive Pricing Cards with Hover Effect Using HTML and CSS 2nd July 2025 Load more