Javascript unassigned var?
42204
Effect of declared and undeclared variables
102015
Variable assigned to the last executed line?
116784
Default variable value
114396
C# Structs: Unassigned local variable?
63109
What's the point of the var keyword?
140089
Javascript "Variable Variables": how to assign variable based on another variable?
151813
What does "javascript:void(0)" mean?
140826
Force JavaScript exception/error when reading an undefined object property?
11651
What does curly brackets in the `var { ... } = ...` statements do?
9417
Are there constants in JavaScript?
8785
Are delphi variables initialized with a value by default?
39705
Is there a way to access a javascript variable using a string that contains the name of the variable?
142537
JavaScript Object Literals & Array Literals
7169
JavaScript OR (||) variable assignment explanation
42004
What is the PHP shorthand for: print var if var exist
30206
Where and how is the _ (underscore) variable specified?
116521
JavaScript variable definition: Commas vs. Semicolons