I've seen this post AngularJS best practices for module declaration? But I am still a little confused about the best way to declare and separate angularJS files for modules, controllers, services etc.  I understand it is good practice to wrap con...
I have a JS library that does something like so:  let OptionalLib; function foo() {   OptionalLib = require('optionallib');   // Do stuff...   return (something from optional lib); }   then I add typings in a .d.ts file:  declare module '...
I am new to Javascript and got confused by how the function declaration works. I made some test on that and got some interesting results:  say();  function say() {     alert("say"); }   The forward-declaration worked and popup "say"...
This doesn't make sense to me, but I have a feeling I saw a code using this:  var abc = def || ghi;   My question is, is this valid? Can we add a condition to a variable declaration? I imagine the answer is no but I have this at the back of my mi...
Is it possible in java script to explicitly declare array to be an array of int(or any other type)?  something like var arr: Array(int) would be nice......
I recently started using PHP Storm (love it) and noticed that it flags declarations of "var i" in for loops as duplicate in JavaScript. I learned that apparently the scope of that variable exists outside of the loop.  for (var i = 0; i < 1...
This code has too many function expressions and I would like to simplify it but I don't know how.  (function(a, b) {     for (a in b = a.prototype)(function(c) {         b[a] = function() {             c.apply(this, arguments);             retur...
I seen a code snippet like the below. Can anybody please tell me what   var [input] = data; var [checkbox, payee, amount]  = data2;   means?  function example(data,data2){ var [input] = data; var [checkbox, payee, amount]  = data2; ............ ........
In Javascript how does variable used before definitions?  console.log("b ", b);  var  b;  I want to understand how above statement work in javascript?...
What is the Difference between declaring an array with elements and declaring it and iterating the elements into it in Javascript?  r = [req.body.email,      req.body.password];   vs  r=[]; r.push(req.body.email, req.body.password);...

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