1. Question:
Google browser
console enter: new Date (1899,11,31,0,0,0)
print: Sun Dec 31 1899 00:00:00 GMT+0805 (China Standard time)
2. Question: Why does + 0805 appear, and how to avoid or replace it?
PS: will use getTime (), getTimezoneOffset () later
Thank you.
because before 1901, Shanghai time was + 8:05:43, until after 1901, it was switched to the real East eighth District, that is, + 8moral chrome. Referring to the following website, you can see the time migration over the years
.https://www.timeanddate.com/t.
however, on my chrome version, I returned Sun Dec 31 1899 00:00:00 GMT+0800, estimated to be related to the chrome version.
Thank you for @ i38me's popular science.
has just tried moment.js to replace it, which is feasible for the time being. If you encounter the same problem in the new version of Google browser, please refer to the following:
thought:
1. To obtain the time zone of 1899 (for example: Shanghai, China):
moment ([1899 Magi 11 Magi 31je 0je 0]). UtcOffset () has been abandoned in place of getTimezoneOffset () PS:zone, there is a positive or negative problem that has not been studied, note that
= > 480
, that is, East eighth District
2.It is worth noting that < 1899 > = > 480 < Shanghai > is the East eighth District
2. Convert 480 words = > + 0800 (write down the general function yourself)
3.moment ("1899-12-31 0:0:0 + 0800", "YYYY-MM-DD HH:mm Z"). ValueOf () can replace getTime ()
temporary solution
2018-12-29 added:
alternative method
function getTimeFunc(time){
var dateOffset = -moment(moment(time).toArray()).utcOffset();
var timeZ = dateOffset/60 < 0 ? "+" + -dateOffset/60 : dateOffset/60;
return moment(moment(time).format("YYYY-MM-DD HH:mm:ss ") + timeZ, "YYYY-MM-DD HH:mm Z").valueOf();
}
function getTimezoneOffsetFunc(time){
return -moment(moment(time).toArray()).utcOffset();
}Previous: WeChat Mini Programs cover-view set text-decoration: line-through; real machine has no effect
Next: After the vue dynamic component tab is switched, how to realize the navigation highlight problem?
goal: achieve the timeline of the process platform through php for example, a process platform needs to be designed, and the complete process needs to be realized through steps such as A-> B-> C-> D-> E, and there are multiple job in the whole process...
now there is a scenario in which you subscribe to kafka s topic, to get the message in real time, then check the database through the message content to get some fields necessary to build the document, and then consume the constructed document. now a...
I am a novice. I encountered a little confusion when learning javascript timer. It may be a clich problem, but I still want to ask the elders. The problem and code are as follows: var Cat = function() { var o = { say: function() { ...
for example, 4.1-8.2 is 4 months and 2 days ...
I am a novice. I encountered some doubts when learning the asynchronism of javascript , as follows: there is an example code like this in teacher Ruan Yifeng s tutorial: does not particularly understand the operation mechanism of the whole mult...
there are two files, A.txt and B.txt. there are 3000w rows of data in A.txt. The contents separated by spaces between id and username are as follows: id usernmae 1 zhangsan 2 lisi ...... there are 3000w rows of data in B.txt. The contents sep...
the middle tier I started with node (koa) has a lot of timeouts from the very beginning. I wrote the timeout control myself. At first, I wrote the timeout, then the request grew, the timeout also increased, and finally I reached several hours, and then I...
in other words, will the timer be executed as soon as the cpu time is up, or do you need to wait for other threads to give up the cpu? is this the same as Thread.sleep ()? ...
as mentioned, I must simulate the integer attribute GARCH (INGARCH) model in the R environment without using the R packet (package). Unlike the original GARCH, this model is not a normal distribution (normal distribution) but a Poisson split (poisson di...
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatib...
what is the accuracy of setTimeout and setInterval timing? What is the minimum timing millisecond? Is there anything you need to pay attention to? ...
given that the elements in an array $arr, array are 0 to NMagi N < = $NMMI 1, find out whether there are any duplicate elements. The time complexity is O (n), and the space complexity is O (1) ....
canvas drawCircle() { var ctx = wx.createCanvasContext( canvasArcCir ) var width = this.animation.canvasWidth 2; function backgroundCircle() { ctx.save(); ctx.beginPath(); ctx.setLineWidth(8) ctx...
I just came into contact with a project. There are two datetimebox fields: new time and modification time in datgrid. When I double-click the row to enter the edit interface, these two fields get the current year, month and day, instead of the field dat...
if you edit a file with vi, even if the contents of the file are not modified, as long as both wq, mtime and ctime will change. the content of the file has not changed, and I can barely understand that mtime changes as long as wq, mtime will change. (I ...
think about how update, does it, like facebook, Twitter, or other social networking sites, instant comment, notifications. What kind of techniques are used? If it is too difficult, what kind of technology can do it? I m thinking of ajax+settimeout, but...
Environment: win2008 R2 (64-bit) iis7.5 php5.5.38 (nts-vs11-x86) php operating mode: fastcgi. Test Code $start = microtime(true); set_time_limit(0); @ini_set( memory_limit , -1 ); $file = . . time() . .txt ; for($i = 0; $i &...
now I m doing app optimization, and I don t think it s necessary for iOS app to get server time. -sharppragma mark -- - (void)getServerTime { [APIManager server_timeWithSuccess:^(id result, NSString *message) { ask the iOS client, ...
Sat, 16 Jun 2018 03:55:53 + 0000 Wed, 20 Jun 2018 15:16:17 + 0800 is there any difference between the above two times? could you tell me which is Beijing time ...
how to transcode from video to audio with pure JavaScript? (for example, mp4 to wav) PS: my goal is to grab the sound of the video from the web page into audio, and then recognize the text through platforms such as iFLYTEK. ...