<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<script>
//1:原始类型：
//数值：1，3，60
//字符串：‘peter' 'php' '60'
//如果60不加定界符：60
//peter,php不加定界符：
//定界符：'',""
//布尔值：true,false
//undefined :没有被定义
// null 是一个值也是一个对象
// 对象类型：object
// array,
// Math,
// Date,
// Function,
//用字面量来声明一个对象
//对象成员：属性，方法，统一为属性
var person = {
id:1001,
name: 'peter shu',
sex:'male',
job: function () {
console.log(this.name)
}
}
// console.log(person.id);
// console.log(person.name);
// console.log(person.sex);
// console.log(person.job());
// var obj = new Object();// O一下定要大写
var obj = function () {};
obj.x = 40;
obj.y = 100;
obj.p = function () {
return '我是obj的p方法反回值';
}
//函数是javascript中的一等公民
// console.log(obj.x);
// console.log(obj.f());
// console.log(obj.p());
var num = 500;
var num = new Number(500);
console.log(num);
</script>
</body>
</html>
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