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    Mobile Platform as a Service:Operator

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    Mobile Platform as a Service:Operator

    Last Updated:Feb 03, 2021

    Arithmetic operator

    1. var a = 10, b = 20;
    2. // Addition operation
    3. console.log(30 === a + b);
    4. // Substraction operation
    5. console.log(-10 === a - b);
    6. // Multiplication operation
    7. console.log(200 === a * b);
    8. // Division operation
    9. console.log(0.5 === a / b);
    10. // Complementation operation
    11. console.log(10 === a % b);

    The addition +</> operator can be used for string concatenation.

    1. var a = 'hello', b = ' alipay';
    2. // String concatenation
    3. console.log('hello alipay' === a + b);

    Comparison operator

    1. var a = 10, b = 20;
    3. // Less than
    4. console.log(true === (a < b));
    5. // More than
    6. console.log(false === (a > b));
    7. // Less than or equal to
    8. console.log(true === (a <= b));
    9. // More than or equal to
    10. console.log(false === (a >= b));
    11. // Equal sign
    12. console.log(false === (a == b));
    13. // Not equal sign
    14. console.log(true === (a != b));
    15. // Equivalent sign
    16. console.log(false === (a === b));
    17. // Not equivalent sign
    18. console.log(true === (a !== b));

    Binary logical operator

    1. var a = 10, b = 20;
    2. // AND
    3. console.log(20 === (a && b));
    4. // OR
    5. console.log(10 === (a || b));
    6. // NOT, negation operation
    7. console.log(false === !a);

    Bitwise operator

    1. var a = 10, b = 20;
    3. // Left shift operation
    4. console.log(80 === (a << 3));
    5. // Unsigned right shift operation
    6. console.log(2 === (a >> 2));
    7. // Signed right shift operation
    8. console.log(2 === (a >>> 2));
    9. // AND operation
    10. console.log(2 === (a & 3));
    11. // XOR operation
    12. console.log(9 === (a ^ 3));
    13. // OR operation
    14. console.log(11 === (a | 3));

    Assignment operator

    1. var a = 10;
    2. a = 10; a *= 10;
    3. console.log(100 === a);
    4. a = 10; a /= 5;
    5. console.log(2 === a);
    6. a = 10; a %= 7;
    7. console.log(3 === a);
    8. a = 10; a += 5;
    9. console.log(15 === a);
    10. a = 10; a -= 11;
    11. console.log(-1 === a);
    12. a = 10; a <<= 10;
    13. console.log(10240 === a);
    14. a = 10; a >>= 2;
    15. console.log(2 === a);
    16. a = 10; a >>>= 2;
    17. console.log(2 === a);
    18. a = 10; a &= 3;
    19. console.log(2 === a);
    20. a = 10; a ^= 3;
    21. console.log(9 === a);
    22. a = 10; a |= 3;
    23. console.log(11 === a);

    Unary operator

    1. var a = 10, b = 20;
    2. // Auto increment operation
    3. console.log(10 === a++);
    4. console.log(12 === ++a);
    5. // Auto decrement operation
    6. console.log(12 === a--);
    7. console.log(10 === --a);
    8. // Positive value operation
    9. console.log(10 === +a);
    10. // Negative value operation
    11. console.log(0-10 === -a);
    12. // Not operation
    13. console.log(-11 === ~a);
    14. // Negation operation
    15. console.log(false === !a);
    16. // Delete operation
    17. console.log(true === delete a.fake);
    18. // Void operation
    19. console.log(undefined === void a);
    20. // Typeof operation
    21. console.log("number" === typeof a);

    Ternary operator

    1. var a = 10, b = 20;
    2. // Conditional operator
    3. console.log(20 === (a >= 10 ? a + 10 : b + 10));

    Comma operator

    1. var a = 10, b = 20;
    2. // Comma operator
    3. console.log(20 === (a, b));

    Operator precedence

    SJS operators have the same precedence as Javascript operators.