Questions Bank 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:OpenProgrammingAnswers asked 2 years ago • JavaScript Essentials 1We want to convert the string “1024” to type Number and store the result in variable n. Point out the correct statement:OpenProgrammingAnswers asked 2 years ago • JavaScript Essentials 1Point out the correct declaration of the height variable:OpenProgrammingAnswers asked 2 years ago • JavaScript Essentials 1By default, JavaScript allows us to write to an undeclared variable (it declares it implicitly for us). If we want the interpreter to treat such a situation as an error, we have to:OpenProgrammingAnswers asked 2 years ago • JavaScript Essentials 1We want to declare a distance constant and initialize it with the value 120. What should such a declaration look like?OpenProgrammingAnswers asked 2 years ago • JavaScript Essentials 1Analyze the code snippet. Identify which variables are local and which are global: let name; let age; { let profession; { let height; let weight; }OpenProgrammingAnswers asked 2 years ago • JavaScript Essentials 1What does shadowing mean?OpenProgrammingAnswers asked 2 years ago • JavaScript Essentials 1We 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:OpenProgrammingAnswers asked 2 years ago • JavaScript Essentials 1We perform the operation: let x = “abcdefg”.slice(2, 4). As a result, the value:OpenProgrammingAnswers asked 2 years ago • JavaScript Essentials 1If a variable stores the value false, then the variable:OpenProgrammingAnswers asked 2 years ago • JavaScript Essentials 1We declare an object called dog, with two fields: age and name: let dog = { age: 5. name: “Axel” }; To change the value of the age field to 6, we need to perform:OpenProgrammingAnswers asked 2 years ago • JavaScript Essentials 1Performing the operation: let x = 20n + 10; will result in:OpenProgrammingAnswers asked 2 years ago • JavaScript Essentials 1Analyze the code snippet: let counter = 0; let userName = “John”; After declaring a counter variable, we want to put 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:OpenProgrammingAnswers asked 2 years ago • JavaScript Essentials 1Analyze the following code: let x = 10 / 100; console.log(typeof (x)); As a result of its execution:OpenProgrammingAnswers asked 2 years ago • JavaScript Essentials 1In order to check the number of elements of the array stored in the names variable, we call:OpenProgrammingAnswers asked 2 years ago • JavaScript Essentials 1
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