What is the "x = x || {}" technique in JavaScript - and how does it affect this IIFE?
47676
What does "var FOO = FOO || {}" (assign a variable or an empty object to that variable) mean in Javascript?
68812
What does the '=>' syntax in C# mean?
133999
Does variables' order matter when doing == and === comparisons?
11651
What does curly brackets in the `var { ... } = ...` statements do?
56812
Is there any particular difference between intval and casting to int - `(int) X`?
24458
What do ">>" and "<<" mean in Javascript?
65823
What is this JavaScript pattern called and why is it used?
97291
if(!x) vs if(x==false) in ruby
78556
Why isn't [1,2,3] equal to itself in Javascript?
54671
assignment in javascript and the var keyword
3941
What's the difference between ".equals" and "=="?
42605
Is there a technical reason to use > (<) instead of != when incrementing by 1 in a 'for' loop?
106795
What is the use of the := syntax?
126174
What is the difference between != and  operators?
146713
What underlies this JavaScript idiom: var self = this?
73228
What does the [0]*x syntax do in Python?
22122
How do you use the ? : (conditional) operator in JavaScript?