Never attribute to malice that which can be adequately explained by stupidity.
  3 JavaScript interview questions How to check if a certain property exists in an object? How to check if a value is falsy? What's the difference between Object.seal and Object.freeze methods?
  Don't go blind. Use a profiler. "Premature optimization is the root of all evil" - Donald Knuth
  Programmers are good at finding valid reasons for making poor decisions
  "How do we convince people that in programming simplicity and clarity βin short: what mathematicians call "elegance"β are not a dispensable luxury, but a crucial matter that decides between success and failure?" - Edsger W. Dijkstra
  "If you get it free, it is worthless. If you pay for it, it has value. If you build it yourself, it is priceless." - Raj More
  It takes an intelligent person to build something complex It takes a genius to build something simple
  "Fools ignore complexity. Pragmatists suffer it. Some can avoid it. Geniuses remove it." - Alan J. Perlis
  "Intellectuals solve problems. Geniuses prevent them." - Albert Einstein
  4 JavaScript interview questions What's the difference between var, let and const keywords? What is the difference between Implicit and Explicit Coercion? What is Object Destructuring? What does "use strict" do?
  "The greatest performance improvement of all is when a system goes from not-working to working." - John Ousterhout
  "A computer programmer is a device for turning coffee into bugs." - Bram Moolenaar
  "It goes against the grain of modern education to teach children to program. What fun is there in making plans, acquiring discipline in organizing thoughts, devoting attention to detail and learning to be self-critical?" - Alan J. Perlis