What's wrong with my code that tries to check the type of a variable?
50773
How to determine the type of a variable in Swift
93279
Should I force Python type checking?
84421
variable === undefined vs. typeof variable === "undefined"
127452
Why is typeof null "object"?
120169
Expected identifier, string or number
19249
Type Checking: typeof, GetType, or is?
154049
why does if("string") evaluate "string" as true but if ("string"==true) does not?
49763
Problem with "scopes" of variables in try catch blocks in Java
155217
Why is there no primitive type for String?
26842
Function to check if input string is an integer or floating point number?
91006
Why can I refer to a variable outside of an if/unless/case statement that never ran?
3528
How to check if a variable is the same as at least one of two other variables?
11651
What does curly brackets in the `var { ... } = ...` statements do?
39781
Why does the is operator return false when given null?
140110
In Java, how do I dynamically determine the type of an array?
86808
How to determine if a string is a valid variable name?
1894
Why does typeof NaN return 'number'?