Javascript Developer JSE 40 01 Exam Questions & Answers

All 27 questions

1. Q1 Q429 - FunctionsAnalyze the following code:function executeOperation(a, b, op) { return op(a, b);} console.log(executeOperation(10, 20, x));Before declaring the function, we should add one…
2. Q2 Q115 - Data TypesWe want to convert the number 1024 to a String typeand store the result in a variable sPoint out…
3. Q3 Q325 - Control FlowReview the following code:let a = 10;if (a > 100) a = 20;console.log(a)What will be displayed in the console…
4. Q4 Q442 - Data TypesWhich of the following statementsare examples of String conversion to Number?(Select two correct answers)
5. Q5 Q232 - FunctionsExamine the following code:let x = mult(2)(10);console.log(x) // -> 20What should the mult function declaration look likeif the execution of…
6. Q6 Q233 - FunctionsIn the following code fragment, where we use setIntervalone line is missing:let counter = 2;let interval = setInterval(() => {…
7. Q7 Q204 - BasicsWhat HTML tag is used to indicate that we are embedding JavaScript code?
8. Q8 Q125 - Control FlowWhat keyword does the function declaration start with?
9. Q9 Q122 - Control FlowWhich of the following loop instructions checksthe loop continuation condition only after the iteration has been completed?
10. Q10 Q613 - Data TypesWhat does shadowing mean?
11. Q11 Q414 - Data TypesUsing the string interpolation technique, we can create the string"I do not like travelling by plane"and store it in…
12. Q12 Q503 - BasicsA client-side JavaScript program:
13. Q13 Q438 - BasicsJavaScript is:
14. Q14 Q344 - BasicsJavaScript is:
15. Q15 Q107 - Data TypesIn the daysOfWeek variable,we place an array with names of the days of the week.To reverse the order of…
16. Q16 Q435 - Error HandlingAnalyze the following code:'let msg = "Hello World"';console.log(msg);What exception will be thrown as a result of its execution attempt?
17. Q17 Q523 - Control FlowExamine the following code:let route = {distance: 131, elevation: 1.4};for (let k in route) console.log(k);What will appear in the…
18. Q18 Q423 - Control FlowExamine the following code:let car = {make: "Citroen", model: "DS"};for (let f in car) console.log(f);What will appear in the…
19. Q19 Q536 - Error HandlingAnalyze the following code:try { ocnsole.log("start");} catch (error) { console.log("error");}console.log("end");What will happen as a result of its execution?
20. Q20 Q237 - Error HandlingAnalyze the following code:try { const a = 1; a++; console.log("start");} catch (error) { console.log("error");} finally { console.log("end");}What will…
21. Q21 Q526 - Control FlowThe condition if (!a) can be replaced by the condition:
22. Q22 Q302 - BasicsThe JavaScript code includes theconsole.log("http://test.org"); command.Its executions will:
23. Q23 Q403 - BasicsHTML is:
24. Q24 Q130 - FunctionsWe define a function using the following function expression:let sum = function (a, b) { return (a + b);}What could…
25. Q25 Q409 - Data TypesAnalyze the code snippet:let distance = 0;let userName = "John";After declaring the distance variable,we want to add a short…
26. Q26 Q623 - Control FlowReview the following code:for (let a = 4; a < 4; a++) { console.log("test");}How many times will "test" be…
27. Q27 Q543 - FunctionsYou have defined the following arrow function:let multiply = (m, n) => m * n;Select the correct regular declarationsof the…