Blog

The result of the comparison "abcd" > "Abcd" will be: "abcd" true false 1 Answers Explanation & Hints: The result of the comparison "abcd" > "Abcd" will be true. When comparing…

Analyze the code snippet: let n = 2 * 3 ** 3 - 1; The result is stored in the variable n is: 18 36 215 53 Answers Explanation &…

The number 2 is stored in the variable n (let n = 2;). The command n = n*n*n is then called. This last command can be replaced by: n **= n; n **=…

The result of the operation !(true && false || true) will be: null false 1 true Answers Explanation & Hints: The result of the operation "!(true && false || true)" will…

Which operator do we use if we want to check if two variables store the same values of exactly the same type? = === == !== Answers Explanation & Hints:…

Analyze the following code: let test = prompt("Hello", "World"); What value will the test variable have if, after running the code, we immediately press the Ok button on the newly created…

The result of the operation 3 * 4 > 20 - 15 will be: NaN false true -14 Answers Explanation & Hints: To evaluate the expression "3 * 4 >…

The result of the operation false || "false" will be: 0 "false" false true Answers Explanation & Hints: The result of the operation false || "false" in JavaScript is indeed false.…

The result of the operation 20 || 5 will be: 5 25 20 true Answers Explanation & Hints: In JavaScript, the double vertical bar "||" is indeed used as the logical…

Point out the correct declaration of the height variable: height; height is variable; let height; variable height; Answers Explanation & Hints: In JavaScript, variables are typically declared using the let…

We have declared an array let animals = ["dog", "cat", "hamster"];. We want to temporarily comment out the element "cat", and to do this, we can modify the declaration as follows:…

We have declared an array of selected month names let summer = ["June", "July", "August"];. We want to change the value "July" stored in the array to the number 7: summer[1] =…

What does shadowing mean? Declaring a global variable with the same name as a previously declared global variable. Changing the value of a variable. Deleting and rewriting a selected piece…

Complex (or composite) data types: is an alternative name for primitive types. may consist of multiple elements, of which is of a primitive type. may consist of multiple elements, each…

Performing the operation: let x = "Alice" + 10; will result in: the program execution to abort due to an error. the value NaN of Number type to be stored in the…

Review the following code (note the variable name): let age = 32; age = age + 1; console.log(Age); As a result of its execution, the following should appear in the…

Performing the operation: let x = 100 / 0; will result in an Infinity value being stored in the variable x. the value NaN being stored in the variable x. the value…

Performing the operation: let x = 20n + 10; will: result in the string "20n10" being stored in the variable x. cause the program to abort due to an error. result in…

Analyze the code snippet: let name; let age; { let height; // 2 { // 2 { let weight; // 1 // 2 console.log(name); // 1 // 2 // 2…

We have declared an array of animals let animals = ["dog", "cat", "hamster"];. Then we call the method animals.pop();. As a result, the animals array will look like this: ["dog", "cat"] ["cat",…