So I am a Front-End Developer. So far, I designed the website manually, and it has been fun and easy with me.
But today I got a job interview for the position of Front-End Developer (I hope I will be hired soon). In the interview, the interviewers (Back-End Developers) seems glad to see my portfolios. However, when they asked me about what kind of framework I used to use, I don't have any idea to answer it. So far, I just use bracket as my webs editor. And then they pointed out that they like bootstrap.
My question is, is it important for the front-end developer to use framework? what if I don't use any framework? I just read that framework or bootstrap makes us easier to construct our websites, but I just found it not natural and not easy to comprehend.