Why does null == undefined evaluate to true?
665
Which equals operator (== vs ===) should be used in JavaScript comparisons?
132398
What is null in Java?
17078
if(false==condition). Why?
2146
object==null or null==object?
126341
Avoiding IF ELSE due to variable been NULL
31537
Checking for null before event dispatching... thread safe?
38241
How do I check for nulls in an '==' operator overload without infinite recursion?
5975
How to avoid returning a Null if there is no "else" condition in an If construct
153624
What's the difference between is_null($var) and ($var === null)?
93804
How to check for a Null value in VB.NET
65694
What is the difference between NULL, '\0' and 0?
93772
Why is isNaN(null) == false in JS?
3941
What's the difference between ".equals" and "=="?
144594
What is the point of void operator in JavaScript?
124080
How does the assignment of the null literal to a System.Nullable type get handled by .Net (C#)?
79477
Why is "null" present in C# and Java?
5377
Is there a standard function to check for null, undefined, or blank variables in JavaScript?