Skip to contentSkip to footer

Frontend Software Engineer Interview Questions

Salaries
Interviews

13,274 frontend software engineer interview questions shared by candidates

class Foo { add5(value){ value = value + 5; return value; } addElement(arr, elem) { arr.push(elem); return arr; } increment(arr) { arr[0]++; return arr; } } let fooInstance = new Foo(); let a = 9; const arr1 = [1,2]; const arr2 = [1,2,1]; fooInstance.add5(a); fooInstance.addElement(arr1, 3); fooInstance.increment(arr2); console.log(a); // ??? console.log(arr1); // ?? console.log(arr2); // ??
avatar

Senior Frontend Developer

Interviewed at Zesty

4.1★
Oct 5, 2023

class Foo { add5(value){ value = value + 5; return value; } addElement(arr, elem) { arr.push(elem); return arr; } increment(arr) { arr[0]++; return arr; } } let fooInstance = new Foo(); let a = 9; const arr1 = [1,2]; const arr2 = [1,2,1]; fooInstance.add5(a); fooInstance.addElement(arr1, 3); fooInstance.increment(arr2); console.log(a); // ??? console.log(arr1); // ?? console.log(arr2); // ??

Viewing 251 - 260 interview questions

Glassdoor has 13,274 interview questions and reports from Frontend software engineer interviews. Prepare for your interview. Get hired. Love your job.