Java Script Quiz6 1. How do you create an empty array in JavaScript? let arr = []; let arr = new Array(); Both a and b are correct. 2. How do you add an element to the end of an array in JavaScript? arr.push(element); arr.unshift(element); arr.concat(element); 3. How do you remove the last element from an array in JavaScript? arr.pop(); arr.shift(); arr.splice(-1, 1); 4. How do you remove the first element from an array in JavaScript? arr.pop(); arr.shift(); arr.splice(0, 1); 5. How do you check if an element exists in an array in JavaScript? arr.has(element); arr.indexOf(element) !== -1; Both a and b are correct. 6. How do you concatenate two arrays in JavaScript? arr1.concat(arr2); arr1.join(arr2); arr1.push(arr2); 7. How do you get the length of an array in JavaScript? arr.length(); arr.size(); arr.length; 8. How do you loop through an array in JavaScript using the for loop? for (let i of arr) {} for (let i in arr) {} for (let i = 0; i < arr.length; i++) {} 9. How do you find the maximum value in an array in JavaScript? Math.max(arr); Math.max(…arr); arr.max(); 10. How do you find the minimum value in an array in JavaScript? Math.min(arr); Math.min(…arr); arr.min(); Loading … Question 1 of 10
