JS: Double Equal Operator

• The double equal operator == can be used to test equality of Primitive Value of the same type.
• 🛑 WARNING: If left-hand-side and right-hand-side are of different type, it does a type conversion first, often resulting unexpected result.

💡 TIP: never use double equal. Use Triple Equal Operator instead.

// all true

[] == ""

"0" == 0

"" == 0

1 == true