SOURCE

function prints(a){
    console.log(a)
}

//比较符
var a = 6
prints(a==5)  //等于
prints(a!=5)  //不等于
prints(a>7) //大于
prints(a<7) //小于
prints(a>=7)  //大于等于
prints(a<=7)  //小于等于
prints(a===6) //绝对等于(值和类型一样)
prints(a!=="6") //绝对不等于

//逻辑符
var a = 6
var b = 9
prints(a>3 || b>10)  //或关系 or
prints(a>3 && b>3)   //且关系 and
prints(!(a>3))       //非关系 not