Java Script Quiz7 1. How do you create an empty Set in JavaScript? let set = Set(); let set = new Set(); Both a and b are correct. 2. How do you loop through a Set in JavaScript using the for…of loop? for (let i of set) {} for (let i in set) {} for (let i = 0; i < set.size(); i++) {} 3. How do you merge two Sets in JavaScript? set1.concat(set2); new Set([…set1, …set2]); set1.add(set2); 4. How do you convert a Set to an Array in JavaScript? let arr = set.toArray(); let arr = Array.from(set); let arr = set.convertToArray(); 5. How do you add an element to a Set in JavaScript? set.add(element); set.push(element); set.concat(element); 6. What is a Set in JavaScript? A collection of unique values. A collection of key-value pairs. A collection of elements in order. 7. How do you clear all elements from a Set in JavaScript? set.clear(); set.deleteAll(); set = []; 8. How do you remove an element from a Set in JavaScript? set.pop(); set.delete(element); set.splice(element); 9. How do you check if an element exists in a Set in JavaScript? set.has(element); set.indexOf(element) !== -1; Both a and b are correct. 10. How do you get the size of a Set in JavaScript? set.size(); set.length(); set.count(); Loading … Question 1 of 10
