ByteDance/TikTok Interview Questions

JavaScript​

• Implement Promise.all.

• Implement a function which extends Array.prototype.

User interface coding​

• Implement a dropdown component.

Trivia​

• Difference between localStorage and cookies.

Algorithm​

• Merge two sorted integer arrays, remove duplicates.

• You have an image on a page, write css and js so that when mouse is over the image, it rotates 180 deg with 1 sec animation.