Is it necessary to use the keyword 'var' to declare a variable in Javascript
19638
What is the purpose of the var keyword and when should I use it (or omit it)?
105179
Do you prefer "if (var)" or "if (var != 0)"?
57188
Using the variable "name" doesn't work with a JS object
121668
How to avoid global variables in JavaScript?
143542
What is the VB.NET equivalent of the C# “var” keyword?
1742
Why can't variables be declared in a switch statement?
133490
Dynamic variables names in javascript
99805
Referencing a JavaScript value before it is declared - can someone explain this
20165
How to initialize var?
78007
Will using 'var' affect performance?
11651
What does curly brackets in the `var { ... } = ...` statements do?
140089
Javascript "Variable Variables": how to assign variable based on another variable?
20500
Declaring variables in external script
16638
Add a property to a JavaScript object using a variable as the name?
99292
Why aren't variables declared in "try" in scope in "catch" or "finally"?
102063
Global JavaScript Variable Scope: Why doesn't this work?
140230
C# variable scoping: 'x' cannot be declared in this scope because it would give a different meaning to 'x'