Reference to JavaScript code examples See index.js From JS CodeMentor Inverview questions https://www.youtube.com/watch?v=057Rs6CgJnY&t=1228s
http/https handshake process CORS this closure - explain, what issues arise or what pitfalls do you need to be careful of. prototypes == vs === use strict, explain. stops this.value coersion to a global variable. Disallowes duplicate property names or values, makes using eval safer. Explain NaN and how to test against it -use typeof() or use Number.isNaN() from ES6 define promises -es6 generator function to make async code syncronous -es7 await function
how does node.js handle child threads Node is single threaded, puts events into a stack Community pubished modules First arguement passed to a Node.js callback handler is Error because of a lot of uncaught exceptions. Babel with polyfills