How to declare a global variable in JavaScript
global-variables, javascript
Solution
If you have to generate global variables in production code (which should be avoided) always declare them explicitly:
window.globalVar = "This is global!";
While it is possible to define a global variable by just omitting `var` (assuming there is no local variable of the same name), doing so generates an implicit global, which is a bad thing to do and would generate an error in strict mode.
Problem
How can I declare a global variable in JavaScript?