Javascript :: comparison operators, using == vs === and != vs !==

Comparison operators are distinguished following simple logic, whether data type is being included or not.

Essentially if it is === or !==, then the comparison includes a type verification.

Example:

var numberVar = 1;

var stringVar = "1";

//compare if equal

var equals = numberVar == stringVar; //equals will be set to true

var stricterEquals = numberVar === stringVar; //stricterEquals will be set to false

//compare if different

var diff = numberVar != stringVar; //diff will be set to false

var stricterDiff = numberVar !== stringVar; //stricterDiff will be set to true