/testfor values
99034
All Minecraft target selector arguments
156157
/testfor at least 10 specific items in the Inventory
139409
Quick way to find a value in HTML (Java)
93804
How to check for a Null value in VB.NET
80877
ShowLegend values
65608
Only do Where condition if a value is passed in
157498
Junit testing for a boolean method
703
What is the best way to test for an empty string with jquery-out-of-the-box?
44855
Is it a bug in Ecmascript - /\S/.test(null) returns true?
601
How do I test for an empty JavaScript object?
143071
Passing parameters from test methods
94841
How can I compare a dynamic variable with a literal in Mathematica?
66330
Use /testfor to make a custom command
5377
Is there a standard function to check for null, undefined, or blank variables in JavaScript?
576
How can I check for an empty/undefined/null string in JavaScript?
37763
Can i use the /testfor command to check for certain words in chat?
86213
Validate Enum Values