Analyze the following code:

let id = "100";
{
let id = 200;
id = id + 1; console.log(id);
}
What will appear to the console as a result?

Select a set of data types, containing only complex types:

We can replace the declaration let x = 3e-3; with:

Using the string interpolation technique, we can create the string:

"I do not like travelling by plane"

and store it in the msg variable using the command:

We declare a movie object, with two fields: title and year:

let movie = {
title: "Life",
year: 1999

To change the value of the title field to "Matrix" we need to perform:

You declare the following array of animals: let animals = ["canary", "dog", "cat"];. Then, you call the method animals.push("hamster");. What will the animals array look like after calling the method?

A JavaScript code includes the console.log("http://somethingNew.org"); command. Its execution will:

Analyze the code snippet:

let winter = ["December", "January", "February"]; let index = winter.indexOf("February");

What value will the index variable have?

In the daysOfWeek variable, you place an array with the names of the days of the week. Which method will you call to reverse the order of the array elements.

Review the following code:

let msg1 = 'hello'; let msg2 = msg1.slice(-1); console.log(msg2 ? msg2 : msg2 + msg1);

What will appear on the console as a result?

Analyze the following code:

let test = prompt("Run", "code");

What value will the test variable have if, after running the code, we immediately press the OK button on the newly created dialog?

Analyze the following code:

let x = false || true;
let y = "true" && "false";

let z = false && true;

console.log(`${x} ${y} ${z}`);

What will appear in the console as a result of its execution?

Analyze the following code:

let a = true && 20;

let b = 0 || 20;

let c = 0 && 20;

console.log(`${a} ${b} ${c}`);

What will appear in the console as a result of its execution?

Examine the following code:

let a = 20 + "10";

let b = 20 + +"10";

let c = 20 + -"10" + "10";

let d = "10" - "10" + "100";

let e = "A" - "B" + 0xA; console.log(`${a}, ${b}, ${c}, ${d}, ${e}`);

What will appear on the console as a result?

Which of the following loop instructions checks the loop continuation condition only after the iteration has been completed?

The following function using a function expression has been defined:

let sum = function (a, b) {    

return (a + b); }

What could the definition of the corresponding arrow function look like?

The temp array contains air temperature data measured over a period of time. You want to display the minimal temperature using the following code:

temp.forEach(e => min = min > e ? e : min);

console.log(min);

What should the declaration of the min variable look like?

Examine the following code:

let x = [10, 20, 30, 40]; let y = [50, 60];

x.reverse().push(y);

console.log(x.length);

What will appear on the console as a result?

Analyze the following code:

for(let a=1; a<10; a+=2) {    

console.log(a); };

Which statement can replace the for from the example?
VSECHNY ODPOVEDI JSOU REALNE SPATNE NEVIM PROC TO TAM TAKHLE JE ZADANY

Analyze the following code:

let colors = ['red', 'green', 'blue'];

for (let c of colors) console.log(c);

What will appear on the console as a result?

Analyze the following code:

let route = {distance: 131, elevation: 1.4};

for (let k in route) console.log(k);

What will appear on the console as a result?

Examine the following code:

let a = (n) => {    

return n > 2 ? n * a(n - 1) : 2

}

console.log(a(6));

What will appear on the console as a result?

Examine the following code:

let x = mult(2)(10);

console.log(x); // -> 20

What should the mult function declaration look like if the execution of this code results in a value of 20 in the console?

Analyze the code snippet:

let counter = 0;

let userName = "John";

After declaring the counter variable, we want to add a short comment with information about what the variable is used for. To do this, we modify the line with the declaration to the form:

Examine the following code:

x = [40, 10, 30, 20, 50];

x.sort(cmp);

How should the function cmp be declared if, after the code execution, the elements of the array x are sorted in ascending order?

Analyze the following code, which is missing one line:

let counter = 2;

let interval = setInterval(() => {    

console.log(counter);

// Insert missing line here.

}, 1000);

What should the missing line look like if the execution of this code results in the console displaying the values 2, 1, and 0 in sequence?

Analyze the following code:

function execute(todo, a, b) {

return todo(a, b);

}

console.log(execute(power, 3, 2));

Before declaring the function, we should add one more line of code. Which one, if the execution of the completed code will result in the console displaying the value 9?

Analyze the following code:

const a = "hello";    

console.log(a.toUpperCase()); } } catch (error) {    

console.log(a) } finally {    

console.log(a); }

What will happen as a result of its execution?

Placing a debugger; statement in the program code will: