Should I use == or ===?

Should you use == or ===?

KEY DIFFERENCES: = is used for assigning values to a variable, == is used for comparing two variables, but it ignores the datatype of variable whereas === is used for comparing two variables, but this operator also checks datatype and compares two values.

Which is faster == or ===?

Equality operator == converts the data type temporarily to see if its value is equal to the other operand, whereas === (the identity operator) doesn't need to do any type casting and thus less work is done, which makes it faster than ==.

Why do we use === instead of ==?

Use === if you want to compare couple of things in JavaScript, it's called strict equality, it means this will return true if only both type and value are the same, so there wouldn't be any unwanted type correction for you, if you using == , you basically don't care about the type and in many cases you could face ...

Should I use == or is in Python?

The == operator compares the value or equality of two objects, whereas the Python is operator checks whether two variables point to the same object in memory. In the vast majority of cases, this means you should use the equality operators == and != , except when you're comparing to None .