What’s the difference between “{}” and “[]” while declaring a JavaScript array? Normally I declare like  var a=[];   What is the meaning of declaring the array as var a={}...
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'm using destructuring to declare some variables like this:  const { a, b, c } = require('./something'),     { e = 'default', f = 'default'} = c;   Is there a way to make this into single line? I've tried something li...
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 am trying add typings for our Javascript files at work while we are in the process of converting to Typescript. However, I can not get the declaration files to be recognized.  Here is my file structure   js   Foo.js  typings   Foo   index.d.ts   in...
I am just working with basic level of javascripts. Today I found the below and for scrolling down DIV layer when new data adds to DIV. I couldn't understand how to Call the function. Is it to be used using window.onload function? or any other. An...

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