js算术运算符有哪些

x + y

var a = 10;

var b = a + 10;  // b = a+10 = 10+10 =20

x - y

var result1 = 5 - true;    

var result2 = NaN - 1;     

var result3 = 5 - 3;           

console.log(result1);       //4,因为true转换为1

console.log(result2);       //NaN

console.log(result3);       //2

x * y

var e = (8 + 5) * 3;

var f = 'xkd' * 3;

console.log(e);  // 输出：39

console.log(f);  // 输出：NaN

x / y

var result = 15 / 3;

console.log(result);        //5

x % y

var result = 10 % 3;

console.log(result);        //1