This was the worst interview I ever gave. The first round was a skills interview. In the interview, I was able to answer all the React JS and JavaScript questions. But after that, she asked me to add, remove values from an array, get an unique array and reverse a string all using the inbuild methods. I didn't remember so I said I can write a for loop and can accomplish the same but she refused. She said knowledge of loops is not required. She was expecting me to memorize all the method names. Just using the inbuilt methods does not make you a good developer. The developer should know how the methods work behind the scenes. The interviewer was also very rude. The way she was talking looked like she was taking an interview just to reject.