JS time object and reference type

var obj1 = {a:1, b:2};
var obj2 = {a:1, b:2};
console.log(obj1 == obj2);//false，由于obj1与obj2所储存的位置不同，所以false。
console.log(obj1 = obj2);//obj2赋值给obj1 输出 Object { a=1,  b=2} 内容。
console.log(obj1 == obj2);//把obj2赋值给obj1，所以obj2与obj1存储的位置是一样的，所以为true。

var str = getIntv("2017-01-27");
function getIntv(time){
var end = new Date(time);
var now = new Date();
var timer = end-now;
var day = Math.floor(timer/(1000606024));
var timer1 = timer%(1000606024)
var hour = Math.floor(timer1/(10006060));
var timer2 = timer1%(10006060);
var min = Math.floor(timer2/(100060));
var timer3 = timer2%(100060);
var sec = Math.floor(timer3/1000);
return ("距"+time+"还有"+day+"天"+hour+"小时"+min+"分钟"+sec+"秒")
}
console.log(str);  // 距2017-01-27还有 20 天 15 小时 20 分 10 秒

var str = getChsDate('2015-01-08');
console.log(str);  // 二零一五年一月八日

var str = getChsDate('2015-01-08');
function getChsDate(time){
time = time.replace(/-/g,'');
var arr = []
for(i=0;i<time.length;i++){
switch(time[i]){
case &#39;0&#39;: arr.push(&#39;零&#39;);break;
case &#39;1&#39;: arr.push(&#39;一&#39;);break;
case &#39;2&#39;: arr.push(&#39;二&#39;);break;
case &#39;3&#39;: arr.push(&#39;三&#39;);break;
case &#39;4&#39;: arr.push(&#39;四&#39;);break;
case &#39;5&#39;: arr.push(&#39;五&#39;);break;
case &#39;6&#39;: arr.push(&#39;六&#39;);break;
case &#39;7&#39;: arr.push(&#39;七&#39;);break;
case &#39;8&#39;: arr.push(&#39;八&#39;);break;
case &#39;9&#39;: arr.push(&#39;九&#39;);break;
}
}
console.log(time);
arr.splice(4,0,&#39;年&#39;);
arr.splice(7,0,&#39;月&#39;);
arr.splice(10,0,&#39;日&#39;);
arr = arr.join(&#39;&#39;);
return arr;
}//这种方法有一定缺陷，比如&#39;2016-02-28&#39;，输出&#39;二零一六年零二月二八日&#39;,读起来很别扭
console.log(str);  // 二零一五年一月八日

function getChsDate(date){
var newDate =date.split("-"),
year = newDate[0],
month = newDate[1],
day = newDate[2];
var dict ={"0":"零","1": "一", "2": "二", "3": "三","4": "四","5": "五","6": "六","7": "七", "8": "八", "9": "九", "10": "十", "11": "十一", "12": "十二","13": "十三", "14": "十四",  "15": "十五", "16": "十六", "17": "十七", "18": "十八", "19": "十九","20": "二十","21": "二十一", "22": "二十二", "23": "二十三", "24": "二十四",  "25": "二十五","26": "二十六", "27": "二十七", "28": "二十八", "29": "二十九", "30": "三十", "31": "三十一"};
return dict[year[0]]+dict[year[1]]+dict[year[2]]+dict[year[3]] + '年' + dict[Number(month)] +'月' + dict[Number(day)] + '日';
};
getChsDate('2015-01-08');//"二零一五年一月八日"

var lastWeek =  getLastNDays(7); // ‘2016-01-08’
  var lastMonth = getLastNDays(30); //'2015-12-15'

var lastWeek =  getLastNDays(7); // ‘2016-01-08’
var lastMonth = getLastNDays(30); //'2015-12-15'
function getLastNDays(dater){
var now = Date.now();
var timer = dater2460601000;
var past = new Date(now - timer);
var year = past.getFullYear();
var month = past.getMonth()+1;//月份从0开始算；
var day = past.getDate();
return year+'-'+month+'-'+day;
}
console.log(lastWeek);
console.log(lastMonth);

var Runtime = (function(){
//code here ...
return {
start: function(){
//code here ...
},
end: function(){
//code here ...
},
get: function(){
//code here ...
}
};
}());
Runtime.start();
//todo somethint
Runtime.end();
console.log(  Runtime.get() );

var Runtime = (function(){
var time1;
var time2;
return {
start: function(){
time1=Date.now();
},
end: function(){
time2=Date.now();
},
get: function(){
return (time2-time1);
}
};
}());
Runtime.start();
for(var i=0;i<100;i++){
console.log(1);//输出100次1
}
Runtime.end();
console.log(  Runtime.get() );//运行了22ms

function fn(num) {
if (num==0||num==1) {
return 1;
}
else {
return fn(num-1)+fn(num-2);
}
}
console.log(fn(200));

var json={
"name":"yahoo",
"age":"14",
"sex":"man",
"address":
{
"streetAddress": "21 2nd Street",
"city": "New York",
"state": "NY",
"postalCode": "10021"
}
}
function JSON(arr){
var newjson= {};
for(key in arr){
if(typeof arr[key]=="object"){
newjson[key]=JSON(arr[key]);
}
else{
newjson[key]=arr[key];
}
}
return newjson;
}
console.log(JSON(json))

var arr=[1,"2",3,[1,2,3,4],true]
function JSON(arr){
var newarr=[];
for(key in arr){
if(typeof arr[key] =='Array') {
newarr[key]=JSON(arr[key]);
}
else{
newarr[key]=arr[key];
}
}
return newarr;
}
console.log(JSON(arr))

var O={
name:"yahoo",
age:14,
other:[1,2,true,"yahoo",3],
man:{
"man1":"woman",
"man2":"man2"
},
aid:true,
address:
{
streetAddress: "21 2nd Street",
city: "New York",
state: "NY",
postalCode: "10021"
}
}
function JOSN(O){
var newarr={};
for(key in O){
if (typeof O[key] ==='Array'){
newarr[key]=JOSN(O[key]);
}
else{
newarr[key]=O[key];
}
}
return newarr;
}
console.log(JOSN(O))