Operator

Jfol has some operators.

Operator can be calculate on function argument, but otherwhere does not calculate.

Operators

• ==, !=
  • left and right type(must same): String, Boolean, Number or Null
  • return type: Boolean
• +
  • left and right type: Number
    • return type: Number
  • left and right type(not both Number): String, Boolean, Number or Null
    • return type: String
• -, %, *, /
  • left type: Number
  • right type: Number
  • return type: Number
• &&, ||
  • left type: Boolean
  • right type: Boolean
  • return type: Boolean
• <, <=, >, >=
  • left type: Number
  • right type: Number
  • return type: Boolean

Priority

1. *, /, %
2. +, -
3. <, <=, >, >=
4. ==, !=
5. &&
6. ||