javascript基础入门 运算符

1.引用数据类型

1.也叫对象数据类型

 var songaynwen=new Odject();
 songyanwen.age=26;
 songyanwen.fuse="heise";
 songyanwen.tui=2;
 songyanwen.ismale=fslse;
 songyanwen.idcard='14022318876329';
 songaynwen.say=funcion(){
     console.log("hello");
 };
 console.log(songyanwen);
 console.log(songyanwen.age);
 songyanwen.say();
 var ismale.false;
 

2 运算符

1.算数运算符

  + - * / % ++ --
  
var a=1;
var b=3;
var c=1+3;
var d=a+b;
var e=d/c;
var f=5%2;
console.log(d);
console.log(a);
console.log(b);
console.log(a+b);
console.log(e);
console.log(f);
var g=2;
g++;
g++;
g++;
console.log(g);

2.比较运算符

> < >= <=  ==

var a=3;
var b=3;
var c=2;
var jieguo=a>=b;
var jieguo1=a<b;
var jieguo2=a<=b;
var jieguo3=a==b;
jieguo4=a>b;
var 5=a<b;
var 6=a<c;
console.log(jieguo);
console.log(jieguo1);
console.log(jieguo2);
console.log(jieguo3);
console.log(jieguo4);
console.log(jieguo5);
console.log(jieguo6);

3.逻辑运算符

$$ || !

Var a=true;
var b=false;
var result=a$$;
console.log(result);

4.复制运算符

var a=1;