During interviews, one frequent question asked would be something like how to remove duplicated elements in a JavaScript array and how many different ways you can think of. The interviewee would also be asked to write the code down. In real applications, normally front end would not need to handle this case since normally it would be done by backend, but still it's necessary for front end developers to know different ways of doing this.This post will share some of the common ways to remove duplicated elements in JavaScript array.1. ES6 SetIn ES6, there is a new type called Set, The&n...