FINAL PALMER 🙏 ~1-189 Q
11) Which if-else statement correctly conveys the following information? If age is at least 16, "You can learn to drive." is output. a. if (age >= 16) { console.log("You can learn to drive."); } else { console.log("You need to wait a little longer."); } b. if (age > 16 = true) { console.log("You can learn to drive."); } else { console.log("You need to wait a little longer."); } c. if (age = 16) { console.log("You can learn to drive."); } else { console.log("You need to wait a little longer."); } d. if (age <= 16) { console.log("You can learn to drive."); } else { console.log("You need to wait a little longer."); }
a
18) What is the last number output by the loop? i = 5 while (i >= 0) { console.log(i); i--; } a. 0 b. 1 c. 5 d. 6
a
28) The variable magic is a _____. function findPower(strength, potion) { magic = strength + potion; return magic; } findPower(50, 75); console.log(magic); a. global variable b. local variable c. global object d. local object
a
3) What is rainbow's data type? let rainbow = ["red", "orange", "green", "purple"]; a. Array b. Boolean c. String d. Object
a
36) Which code segment defines a setter for the breed property, so that assigning toperson1.breedsetsperson1.pet? let person1 = { firstName: "Sophie", lastName: "Hernandez", age: 25, pet: "", _____ }; a. set breed(value) { this.pet = value; } b. set breed(value) { this.breed = pet; } c. set breed(value) { pet = breed; } d. set breed(value) { breed = pet; }
a
42) What is the final output? let quote = "Talk and they will listen."; quote = quote.replace("talk", "Speak"); quote = quote.replace("they", "I"); quote = quote.replace("LISTEN", "be heard"); a. Talk and I will listen. b. Speak and I will listen. c. Talk and I will be heard. d. Speak and I will be heard.
a
44) How wouldmessagebe written as a template literal? let message = petName + " want a " + petSnack + "?"; a. `${petName} want a ${petSnack}?`; b. "${petName} want a ${petSnack}?"; c. {petName} want a {petSnack}?; d. ${petName} want a ${petSnack}?;
a
62) What document object method should be used to create a text string for inserting into a paragraph? a. createTextNode() b. innerHTML() c. appendNode() d. createElement()
a
63) What is the preferred way to register an event handler that allows multiple handlers for the same event? a. myButton.addEventListener("click", clickHandler); b. myButton.onclick = clickHandler; c. <button onclick="clickHandler()">Click Me</button> d. <button onclick="clickListener">Click Me</button>
a
69) How many times isshowMe()called when the following code is executed? let timerId = setTimeout(showMe, 3000); function showMe() { let div1 = document.getElementById("div1"); div1.style.display = "block"; timerId = setTimeout(showMe, 3000); } a. indefinitely b. 1 c. 2 d. 3
a
73) Which code segment removes the class "myClass" from the element<span id="myId" class="myClass"> </span>? a. document.querySelector("#myId").classList.remove("myClass"); b. document.querySelector("#myId").classList.delete("myClass"); c. document.querySelector("#myId").classList.remove(".myClass"); d. document.querySelector("#myId").class.remove("myClass");
a
75) What is the proper way to set valid to true if the number is valid, false otherwise? function checkNumber() { let number = numberWidget.value; number = number.trim(); valid = _____________________; } a. number.length === 10 && !isNaN(number) b. number.length == 10 && !isNaN(number) c. number.length !== 10 && isNaN(number) d. number.length === 10
a
8) In JavaScript,5 + "5"evaluates to a _____. a. string b. number c. error d. object
a
80) What doesstringify()return? JSON.stringify({"friends": [ {"name":"Bobby"}, {"name":"Celia"},{"name":"Judy"} ]}); a. single string b. string array c. JSON object d. undefined
a
84) When using XMLHttpRequest, when is the HTTP request sent? a. After calling send() b. Before initializing the connection to the server c. Immediately after registering the event handlers d. After receiving the response
a
85) What XMLHttpRequest method must be used to send a POST request to the server? a. open() b. setPostRequestHeader() c. responseType() d. loadstart()
a
86) Which object must be used inresponseReceivedHandler(), which has been registered as the XMLHttpRequest's load event handler with response type "json"? The JSON response looks like: {"title":"Rocky", "rating":"PG", "year":"1976"} function responseReceivedHandler() { let movieInfo = document.getElementById("movieinfo"); if (this.status === 200) { movieInfo.innerHTML = "Title is <cite>" + ____.title + "</cite>"; } else { movieInfo.innerHTML = "Movie data unavailable."; } } a. this.response b. response c. responseJSON d. document
a
94) Which regular expression matches only the words burp, dirt, and right? let randomWords = ["burp", "try", "dirt", "right"]; a. let re = /[a-i]/ b. let re = /[e-i]/ c. let re = /[i-u]/ d. let re = /[r]/
a
95) Which string inwordNumsmatches the regex? let wordNums = ["blahblah!!", "yea", "N()P3", "H!"]; let re = /\wa\S!/; a. blahblah!! b. yea c. N()P3 d. H!
a
96) Given the following code,re.test()returns true for which string? let odWords = ["Body", "mood", "FOOD", "bode"]; let re = /od$/g; odWords.forEach(function (word) { if (re.test(word)) { console.log(word); } }); a. mood b. Body c. FOOD d. bode
a
99) What is missing to create a prototype method for PlayList called showCollection? function PlayList(artist, album) { this.artist = artist; this.album = album; }; _____ = function() { console.log("My playlist so far: " + this.artist + " : " + this.album); }; a. PlayList.prototype.showCollection b. prototype.PlayList.showCollection c. this.prototype.showCollection d. PlayList.showCollection.prototype
a
1) Which variable declaration format is correct? a. favBand let = "Linkin Park"; b. let favBand = "Linkin Park"; c. let favBand: "Linkin Park"; d. favBand let: "Linkin Park";
b
12) Which statement evaluates to true? let score = 10; a. score == "score" b. score == "10" c. score === "10" d. score === "score"
b
15) An example of a falsy value is _____. a. if ("cats") b. if ("") c. if (5) d. if (" ")
b
17) Complete the statement below to answer what is output to the console? let weather = "stormy"; _____ (weather) { case "rainy": message = "It is raining."; break; case "cloudy": message = "There is a chance it will rain."; break; case "thunder": message = "There is a storm out there."; break; default: message = "It is sunny."; } console.log(message); a. switch There is a storm out there. b. switch It is sunny. c. case It is sunny. d. case There is a storm out there.
b
23) Which code snippet uses an anonymous function? a. function subNum(a, b) { return b - a; } b. let subNum = function(a, b) { return b - a; } c. let subNum(a, b) { return b - a; } d. subNum function(a, b) { return b - a; }
b
25) What code convertsdivideNums(a, b)into an arrow function? function divideNums(a, b) { return b / a; } a. divideNums => b / a; b. let divideNums = (a, b) => b / a; c. let divideNums => a, b => b / a; d. divideNums (a, b) => b / a;
b
29) What is output to the console when the following code runs in a browser? var withVar = "Global declared with var"; let withLet = "Global declared with let"; console.log(withVar); console.log(withLet); console.log(window.withVar); console.log(window.withLet); a. Global declared with var Global declared with let Global declared with var Global declared with let b. Global declared with var Global declared with let Global declared with var undefined c. Global declared with var Global declared with let undefined Global declared with let d. undefined undefined Global declared with var Global declared with let
b
34) Which function correctly sorts the values in a descending order? let nums = [10, 2, 15, 25, 40, 55, 5]; a. nums.sort(function (a, b) { return a - b; }); b. nums.sort(function (a, b) { return b - a; }); c. nums.sort(function (a, b) { return a + b; }); d. nums.sort(function (a, b) { return b / a; });
b
37) What is output to the console? function changeThings(someMovie) { someMovie.title = "Race"; someMovie = { title: "42", rating: "PG-13" }; } let movie = { title: "Greater", rating: "PG" }; changeThings(movie); console.log(movie.title); a. Greater b. Race c. 42 d. null
b
38) Fill in the blank to eliminate the owner property from thepokemonobject. let pokemon = { name: "Eevee", color: "brown", evolution: "Jolteon", owner: "Ash" }; _____ pokemon.owner; a. remove b. delete c. eliminate d. erase
b
39) What expression iterates over all theanimalsproperties? let animals = { "cat": 1, "dog": 1, "fish": 3, "hamster": 2 }; for (_____) { console.log(animal + " count = " + animals[animal]); } a. let animal : animals b. let animal in animals c. let animal of animals d. let i = 0; i < 4; i++
b
40) What is output to the console? let population = new Map(); population.set("San Juan", 0.3); population.set("Tokyo", 9.3); population.set("Beijing", 20.5); population.set("San Juan", 0.7); population.delete("Tokyo"); console.log(population.size); a. 0 b. 2 c. 3 d. 4
b
54) What default object is used when no object prefix appears before a property or method call? Ex: alert("Hello"); a. document b. window c. console d. Navigator
b
55) What JavaScript object and method is used to write HTML to the web page? a. document.println() b. document.writeln() c. window.write() d. window.print()
b
58) Which statement changes the Pinterest link to a YouTube link? <!DOCTYPE html> <html lang="en"> <meta charset="UTF-8"> <title>DOM example</title> <body> <p> <a href="https://pinterest.com/">Pinterest</a> </p> <SKIP> let para = document.querySelector("p"); let link = document.querySelector("a"); </SKIP> </body> </html> a. para.href = "https://www.youtube.com/"; b. link.href = "https://www.youtube.com/"; c. para.innerHTML = "https://www.youtube.com/"; d. link.innerHTML = "https://www.youtube.com/";
b
60) In the following example, how is the head element accessed from a DOM? <!DOCTYPE html> <html lang="en"> <meta charset="UTF-8"> <title>DOM example</title> <body> <p>DOM example.</p> </body> </html> a. document.documentElement.children[1] b. document.documentElement.children[0] c. document.documentElement.children[2] d. document.documentElement.children[3]
b
67) What function call cancels the interval?let timerId = setInterval(repeatMe, 1000); a. clearInterval(repeatMe); b. clearInterval(timerId); c. stopInterval(timerId); d. setTimeout(timerId);
b
68) What code causes the repeat() function to execute every 3 seconds? a. setTimeout(repeat, 3); b. setInterval(repeat, 3000); c. setInterval(repeat, 3); d. setTimeout(repeat, 3000);
b
70) What does the span's style attribute method getPropertyValue("color") return? <span style="color: blue">TEST</span> <SKIP> let span = document.querySelector("span"); </SKIP> a. "#0000FF" b. "blue" c. "rgb(0,0,255)" d. Empty string
b
72) What stylesheet method changes the color of an element with classname "myclass" to green? a. stylesheet.insertRule(".myclass", "green"); b. stylesheet.insertRule(".myclass { color: green }"); c. stylesheet.changeRule(".myclass { color: green }"); d. stylesheet.changeRule("#myclass", "green");
b
76) The ________ method can be used to check for the presence of a required character in an input field. a. charAt() b. indexOf() c. string() d. find()
b
77) The CSS rule input:invalid _____. a. requires external JavaScript to validate b. does not require JavaScript to validate c. requires server-side validation d. requires embedded JavaScript to validate
b
88) How is a RESTful web service API called? a. Using a server name and parameters b. Using a URL and parameters c. Using SOAP with request and parameters d. Using XML with request and parameters
b
93) Which strings match the regex? let words = ["dapper", "paper", "cat", "flack"]; let re = /pa|ac/; a. dapper, paper b. paper, flack c. flack, cat d. dapper, flack
b
98) Which line of code instantiates Adele and the album 21? function PlayList(artist, album) { this.artist = artist; this.album = album; }; a. Adele.PlayList = ("Adele", "21"); b. Adele = new PlayList("Adele", "21"); c. Adele new PlayList = ("Adele", "21"); d. Adele = PlayList ("Adele", "21");
b
10) parseFloat()is used with _____ numbers. a. integer b. whole c. decimal d. exponential
c
101) What line is needed so that SuperHeroPet properly inherits from SuperHero? SuperHeroPet.PROT0TYPE = Object.create(SuperHero.PROT0TYPE); _____ a. SuperHeroPet.constructor = SuperHeroPet; b. SuperHeroPet.PROT0TYPE.constructor(SuperHero) = SuperHeroPet; c. SuperHeroPet.PROT0TYPE.constructor = SuperHeroPet; d. SuperHeroPet.constructor.PROT0TYPE = SuperHeroPet;
c
2) Which declaration is a constant for minimum wage? a. let MIN_WAGE; b. var MIN_WAGE = 10; c. const MIN_WAGE = 10; d. const MIN_WAGE;
c
21) Using the code snippet below, which numbers will output to the console? for (i = 10; i >= 0; i-= 2) { console.log(i); } a. 8, 6, 4, 2, 0 b. 10, 8, 6, 4, 2 c. 10, 8, 6, 4, 2, 0 d. 8, 6, 4, 2
c
24) Which return statement is correct if the return value is "I will make an apple and blueberry pie."? let fruitPie = function (a, b) { return _____; } fruitPie("apple", "blueberry"); a. "I will make an " + "a" + " and " + "b" + " pie." b. "I will make an " + (a, b) + pie." c. "I will make an " + a + " and " + b + " pie." d. "I will make an (a) and (b) pie."
c
30) Which array is correctly structured? a. let countries: ["England", "Brazil", "Cuba"]; b. countries = [England, Brazil, Cuba]; c. let countries = ["England", "Brazil", "Cuba"]; d. countries ["England, Brazil, Cuba"];
c
31) How does theunshift()method change the following array? let colors = ["red", "orange", "yellow"]; colors.unshift("blue"); a. Replaces red with blue b. Adds blue to end of array c. Adds blue to beginning of array d. Replaces yellow with blue
c
32) What does the following code snippet output to the console? let names = ["Mike", "Belinda", "Jonny", "Sophie"]; for (i = 0; i < names.length; i++) { console.log(names[i]); } a. "Mike", "Belinda", "Jonny", "Sophie" b. 0Mike 1Belinda 2Jonny 3Sophie c. Mike Belinda Jonny Sophie d. ["Mike", "Belinda", "Jonny", "Sophie"]
c
33) What doesnums.indexOf(10)return? let nums = [4, 8, 10, 6, 2]; a. 1 b. 0 c. 2 d. 3
c
4) In JavaScript, multiple lines are commented out using _____. a. <!-- --> b. // c. /* */ d. /*
c
41) What is output by the following code? let message = "I choose you!"; console.log(message.charAt(6)); a. e b. o c. s d. e you!
c
46) Which code segment changes the year to 2021? let changeYear = new Date (2020, 6, 20); a. changeYear = 2021; b. changeYear.setYear(2021); c. changeYear.setFullYear(2021); d. changeYear = setFullYear(2021);
c
47) Which Date method changes the time from 12 noon to 4 pm? let changeTime = new Date(2020, 5, 2, 12); a. changeTime = new Hours(4); b. changeTime.setHours(4); c. changeTime.setHours(16); d. changeTime = new Hours(16);
c
48) Which method changes 10.2 to 11? a. Math.abs(10.2); b. Math.floor(10.2); c. Math.ceil(10.2); d. Math.round(10.2);
c
52) What is missing to complete the following code segment? let places = { woods: "Guam", beach: "PR", mountains: "Switzerland" }; try { console.log(places.rainforest); _____ "There might be an error"; } catch (error) { console.log(error); } _____ { console.log(places); } a. throw, error b. throw, try c. throw, finally d. finally, try
c
53) What is output to the console? function getSum(scores) { if (!Array.isArray(scores)) { throw new TypeError("Array error"); } if (scores.length != 2) { throw new RangeError("Length error"); } return scores[0] + scores[1]; } try { let sum = getSum([50, 60, 70]); console.log(sum); } catch (ex) { console.log(ex.message); } a. 110 b. Array error c. Length error d. RangeError
c
57) How many DOM nodes are created from the paragraph? <p>Feed the dog.</p> a. None b. One for the p element c. One for the p element and one for the paragraph text d. One for the p element, one for the paragraph text, and one for the whitespace within the paragraph text
c
64) An event that occurs when someone enters their name in an input field is a(n) _____ event. a. click b. load c. input d. submit
c
65) In a text box's keyup event handler, the event parameter's _____ property is the text box object where the keyup event occurred. a. event b. click c. target d. element
c
7) Which compound assignment operator assigns numbers with 9? let numbers = 3; numbers _____ 3; a. += b. -= c. *= d. /=
c
71) Which of the following methods sets the text color in a div element to green? let div = document.querySelector("div"); a. div.style.setProperty("color", green); b. div.setProperty("color", "green"); c. div.style.setProperty("color", "green"); d. div.style.setProperty("color": "green");
c
78) In the following JSON, the data type of friends is _____. {"friends": [{ "name":"Bobby"}, {"name":"Celia"},{"name":"Judy"}]} a. string b. object c. array d. char
c
79) How is the age field accessed after the following code executes? let obj = JSON.parse('{"name":"Bobby", "age":20}'); a. this.age b. age c. obj.age d. obj.name.age
c
81) What doesstringify()return? JSON.stringify({"friends": [{"name":"Bobby", "age":20}, {"name":"Celia", "age":30}, {"name":"Judy", "age":21}]}, ["friends", "age"]); a. string with just "friends" b. string with names and ages c. string with no names d. string with "friends", names and ages
c
83) _____ is an object used to communicate with a web server. a. JSON b. Ajax c. XMLHttpRequest d. XML
c
89) Why is a key sometimes needed to access a third-party web-based API? a. A key identifies the API being accessed. b. A key helps encrypt the API data. c. To obtain a key, a developer must agree to restrictions on data received. d. A key is generated each time by the user for identification purposes.
c
90) A(n) _____ allows older browsers to function with newer features by providing missing functionality. a. trifill b. backfill c. polyfill d. altfill
c
91) A polyfill is engineered to: a. Use JavaScript to implement a feature whenever possible b. Replace HTML to implement a feature after checking if a feature exists c. Use JavaScript to implement a feature after checking if a feature exists d. Use Ajax to implement a feature whenever possible
c
92) The _____ website shows what features are supported by major browsers and frequency of use. a. W3C b. Tiobe c. CanIUse d. W3Schools
c
97) What is output to the console? let re = /i.+e/; result = re.exec("Moana is better than Frozen."); if (result === null) { console.log("No match"); } else { console.log(result[0]); } a. is be b. is bette c. is better than Froze d. is better than Frozen
c
100) Which line of code is missing so the code segment outputs "The secret ingredient is: gold flakes"? function Dessert(name) { this.name = name; let ingredient; this.setSecretIngredient = function(si) { ingredient = si; }; this.getSecretIngredient = function() { return "The secret ingredient is: " + ingredient; }; }; let chocolateMoney = new Dessert("Chocolate Money"); _____ console.log(chocolateMoney.getSecretIngredient()); a. chocolateMoney.ingredient = "gold flakes"; b. chocolateMoney.ingredient("gold flakes"); c. chocolateMoney.setSecretIngredient = "gold flakes"; d. chocolateMoney.setSecretIngredient("gold flakes");
d
13) Using the snippet of code below, what time is it? hour = 11; if (hour <= 10) { message = "Time for breakfast."; } else if (hour <= 14) { message = "Time for lunch."; } else if (hour <= 20) { message = "Time for dinner."; } else { message = "Time for a snack."; } a. Time for a snack. b. Time for breakfast. c. Time for dinner. d. Time for lunch.
d
14) Which message is output to the console? let size = 7; if (size >= 0 && size <= 2) { console.log(size + " is a small."); } else if (size > 2 && size <= 4) { console.log(size + " is a medium."); } else if (size > 4 && size <= 6) { console.log(size + " is a large."); } else { console.log(size + " is an extra large."); } a. 7 is a large. b. 7 is a small. c. 7 is a medium. d. 7 is an extra large.
d
16) What is output to the console? num = 5; console.log(num > 10 ? "Iron Man" : "Hulk"); a. true b. Iron Man c. false d. Hulk
d
19) _____ loops never stop executing. a. While b. For c. Do-while d. Infinite
d
20) Which loop executes once before the condition is tested? a. Infinite b. While c. For d. Do-while
d
22) What is the correct format for calling the function and using 1 and 2 as arguments? function multiplyNums(a, b) { return a * b; } a. multiplyNums(1);multiplyNums(2); b. function multiplyNums(1, 2); c. call multiplyNums(1, 2); d. multiplyNums(1, 2);
d
26) The variable findCost has _____. function musicTix(people, price) { var findCost = people * price; return findCost; } a. a reference error b. global scope c. block scope d. local scope
d
27) A variable declared inside a function withvarhas _____ scope. A variable declared inside a function withlethas _____ scope. a. function, function b. block, block c. block, function d. function, block
d
35) Which statement changes the puppy object's name from Daisy to Darth? let puppy = { name: "Daisy", breed: "husky", color: "black" }; a. puppy = "Darth"; b. name = "Darth"; c. puppy name = "Darth"; d. puppy.name = "Darth";
d
43) What is output to the console? let myPhrase = "Are you talking to me?"; console.log(myPhrase.split("a")); a. ["re you t", "lking to me?"] b. ["Are", "talking"] c. ["re you tlking", "to me?"] d. ["Are you t", "lking to me?"]
d
45) What is the date? let day = new Date(2020, 9, 30); a. Mon Nov 30 2020 03:00:00 GMT-0500 (Eastern Standard Time) b. Sun Aug 30 2020 03:00:00 GMT-0400 (Eastern Daylight Time) c. Wed Sep 30 2020 03:00:00 GMT-0400 (Eastern Daylight Time) d. Fri Oct 30 2020 03:00:00 GMT-0400 (Eastern Daylight Time)
d
49) What is output forMath.pow(4,4);? a. 4 b. 16 c. 8 d. 256
d
5) What is the correct format for logging "My favorite food is pizza."? let favFood = "pizza"; a. console.log("My favorite food is favFood.") b. console.log("My favorite food is" favFood.) c. console.log("My favorite food is " + "favFood.") d. console.log("My favorite food is " + favFood + ".")
d
50) Math.floor(Math.random() * 4);will produce random numbers between _____. a. 0 and 5 b. 0 and 2 c. 0 and 4 d. 0 and 3
d
51) Assume that using the undeclared message2 variable throws an exception. What does the code segment output? function findError() { try { let message1 = "No errors here"; message2; console.log(message1); } catch (error) { console.log("There is an error"); } } findError(); console.log("Done searching"); a. There is an error b. No errors here Done searching c. Done searching d. There is an error Done searching
d
56) Which<SKIP>tag attribute causes the browser to process the JavaScript after the web page is completely loaded? a. async b. code c. wait d. defer
d
6) x = 4 ** 4is the same as _____. a. x = 44 b. x = 4 * 4 c. x = 4 + 4 + 4 + 4 d. x = 4 * 4 * 4 * 4
d
61) Which statement removes the first item in the following list? <ol id="list"> <li>one</li> <li>two</li> <li>three</li> </ol> a. list = document.getElementsByTagName("ol")[0]; list.removeChild(list.childNodes[1]); b. list = document.getElementsByTagName("ol").removeChild(list.childNodes[0]); c. list = document.getElementsById("ol"); list.removeChild(list.childNodes[0]); d. list = document.getElementsByTagName("ol")[0]; list.removeChild(list.childNodes[0]);
d
66) Assuming the following<div id="div1" ><p id="p1">Click Me </p></div>, what event listener declaration pair would result in the given message sequence: "You clicked on the p element." "You clicked the div element." a. document.getElementById("div1").addEventListener("click", function() { alert("You clicked the div element."); }, true); document.getElementById("p1").addEventListener("click", function() { alert("You clicked the p element."); }, true); b. document.getElementById("p1").addEventListener("click", function() { alert("You clicked the p element."); }, true); document.getElementById("div1").addEventListener("click", function() { alert("You clicked the div element."); }, true); c. document.getElementById("p1").addEventListener("click", function() { alert("You clicked the p element."); }, false); document.getElementById("div1").addEventListener("click", function() { alert("You clicked the div element."); }, true); d. document.getElementById("p1").addEventListener("click", function() { alert("You clicked on the p element."); }); document.getElementById("div1").addEventListener("click", function() { alert("You clicked on the div element."); });
d
74) What attribute of an input element can be validated when text is entered on a webpage? a. data b. text c. innerHtml d. value
d
82) What types of data can Ajax transmit? a. XML only b. HTML only c. XML and JSON only d. plain text, HTML, XML, and JSON
d
87) What type of data can be expected from a third party RESTful web API? a. HTML b. SOAP or XML c. Plain text d. JSON or XML
d
9) IfparseInt()cannot return a number, _____ is returned. a. 0 b. isNaN() c. Error d. NaN
d
