Simple operation of JS date object (get current year, week, time)
The example of this article shares with you the method of obtaining the current year, week, and time in JavaScript for your reference. The specific content is as follows
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
</body>
<script type="text/javascript">
//日期对象可以储存任意一个日期， 并且可以精确到毫秒数（ 1 / 1000 秒）。
//定义一个时间对象:
//var Udate = new Date();
//注意:使用关键字new，Date()的首字母必须大写。
//使 Udate 成为日期对象，并且已有初始值：当前时间(当前电脑系统时间)。
//如果要自定义初始值，可以用以下方法：
var d = new Date(2012, 10, 1);
document.write(d + "<br/>");
var c = new Date('Oct 1,2012');
document.write(d + "<br/>");
//访问方法语法：“<日期对象><方法>”
//Date 对象中处理时间和日期的常用方法：
// get/setDate(): 返回,设置日期
//get/setFullYear(): 返回,设置年份,用四位数表示
// get/setYear(): 返回,设置年份
//get/setMonth(): 返回,设置月份(０:１月,,,,１１:１２月)
//get/setHours(): 返回,设置小时,２４小时制
// get/setMinutes(): 返回,设置分钟数
//get/setSeconds(): 返回,设置秒钟数
// get/setTime(): 返回,设置单位(毫秒为单位)
//1.设置年份方法
//get/setFullYear()返回/设置年份，用四位数表示
var mydate = new Date(); //当前时间
document.write(mydate + "<br/>");
document.write(mydate.getFullYear() + "<br/>"); //输出当前年份
mydate.setFullYear(81); //设置年份
document.write(mydate + "<br/>") //输出年份被设定为８１年
// 不同浏览器，mydate.setFullYear(81)结果不同，
//年份被设定为００８１或８１两种情况。
//注意:
// 结果格式依次为： 星期、 月、 日、 年、 时、 分、 秒、 时区。(火狐浏览器)
// 不同浏览器， 时间格式有差异
//2.设置星期的方法
//getDay() 返回星期，返回的是0-6的数字，0 表示星期天。
//如果要返回相对应“星期”，通过数组完成，代码如下:
var mydate=new Date();//定义日期对象
var weekday=["星期日","星期一","星期二","星期三","星期四","星期五","星期六"];
// 定义数组对象，给每个数组项赋值
var mynum=mydate.getDay();//返回值存储在变量mynum中
document.write(mydate.getDay());//输出getDate()获取值
document.write("今天是："+weekday[mynum]);//输出星期几
document.write("<br/>");
//３.设置时间方法
//get/setTime() 返回/设置时间，单位毫秒数，
//计算从 1970 年 1 月 1 日零时到日期对象所指的日期的毫秒数。
//如果将目前日期对象的时间推迟１小时，代码如下：
var mydate=new Date();
document.write("当前时间"+mydate+"<br/>");
mydate.setTime(mydate.getTime()+60*60*1000);
document.write("推迟一小时时间："+mydate);
//注意：一小时６０分，一分６０秒，一秒１０００毫秒；时间推迟一小时就是："x.setTime(x.getTime()+60*60*1000);"
</script>
</html>The above is the entire content of this article. I hope it will be helpful to your study. I also hope that everyone will support the PHP Chinese website.
For more related articles on simple operations of JS date objects (getting the current year, week, and time), please pay attention to the PHP Chinese website!
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
AI Hentai Generator
Generate AI Hentai for free.
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
1386
52
What should I do if I encounter garbled code printing for front-end thermal paper receipts?
Apr 04, 2025 pm 02:42 PM
Frequently Asked Questions and Solutions for Front-end Thermal Paper Ticket Printing In Front-end Development, Ticket Printing is a common requirement. However, many developers are implementing...
Who gets paid more Python or JavaScript?
Apr 04, 2025 am 12:09 AM
There is no absolute salary for Python and JavaScript developers, depending on skills and industry needs. 1. Python may be paid more in data science and machine learning. 2. JavaScript has great demand in front-end and full-stack development, and its salary is also considerable. 3. Influencing factors include experience, geographical location, company size and specific skills.
How to merge array elements with the same ID into one object using JavaScript?
Apr 04, 2025 pm 05:09 PM
How to merge array elements with the same ID into one object in JavaScript? When processing data, we often encounter the need to have the same ID...
Demystifying JavaScript: What It Does and Why It Matters
Apr 09, 2025 am 12:07 AM
JavaScript is the cornerstone of modern web development, and its main functions include event-driven programming, dynamic content generation and asynchronous programming. 1) Event-driven programming allows web pages to change dynamically according to user operations. 2) Dynamic content generation allows page content to be adjusted according to conditions. 3) Asynchronous programming ensures that the user interface is not blocked. JavaScript is widely used in web interaction, single-page application and server-side development, greatly improving the flexibility of user experience and cross-platform development.
The difference in console.log output result: Why are the two calls different?
Apr 04, 2025 pm 05:12 PM
In-depth discussion of the root causes of the difference in console.log output. This article will analyze the differences in the output results of console.log function in a piece of code and explain the reasons behind it. �...
How to achieve parallax scrolling and element animation effects, like Shiseido's official website?
or:
How can we achieve the animation effect accompanied by page scrolling like Shiseido's official website?
Apr 04, 2025 pm 05:36 PM
Discussion on the realization of parallax scrolling and element animation effects in this article will explore how to achieve similar to Shiseido official website (https://www.shiseido.co.jp/sb/wonderland/)...
TypeScript for Beginners, Part 2: Basic Data Types
Mar 19, 2025 am 09:10 AM
Once you have mastered the entry-level TypeScript tutorial, you should be able to write your own code in an IDE that supports TypeScript and compile it into JavaScript. This tutorial will dive into various data types in TypeScript. JavaScript has seven data types: Null, Undefined, Boolean, Number, String, Symbol (introduced by ES6) and Object. TypeScript defines more types on this basis, and this tutorial will cover all of them in detail. Null data type Like JavaScript, null in TypeScript
Can PowerPoint run JavaScript?
Apr 01, 2025 pm 05:17 PM
JavaScript can be run in PowerPoint, and can be implemented by calling external JavaScript files or embedding HTML files through VBA. 1. To use VBA to call JavaScript files, you need to enable macros and have VBA programming knowledge. 2. Embed HTML files containing JavaScript, which are simple and easy to use but are subject to security restrictions. Advantages include extended functions and flexibility, while disadvantages involve security, compatibility and complexity. In practice, attention should be paid to security, compatibility, performance and user experience.
