jQuery DATETIME Functions - Complete Listing
Key Takeaways
- jQuery DATETIME functions are incredibly versatile, offering a complete range of date and time manipulations, including getting the date, converting dates, validating dates, and comparing dates.
- The functions also include capabilities to convert date strings to date objects, determine if a departure and return date are valid, and detect if a year is a leap year.
- The JQUERY4U.DATETIME.js library also includes a comprehensive date formatting function, similar to PHP’s date function, allowing for custom date formats.
- The library is easy to implement, with a minimal overhead ensuring speed and accuracy, making it a preferred choice over other date/time libraries.
jQuery Date/Time Complete Listing
<span>/*___ FILE: "JQUERY4U.datetime.js" ___*/
</span><span>;(function($)
</span><span>{
</span> <span>/**
</span><span> * jQuery Date and time functions - Complete List
</span><span> */
</span> <span>var JQUERY4U = JQUERY4U || {};
</span> <span>JQUERY4U.DATETIME =
</span> <span>{
</span> <span>/**
</span><span> * Name of this class (used for error handling and/or debugging purposes)
</span><span> * <span>@type String
</span></span><span> */
</span> <span>name: 'JQUERY4U.DATETIME',
</span>
<span>init: function()
</span> <span>{
</span> <span>JQUERY4U.UTIL.handleErrors(this);
</span> <span>Date.prototype.<span>JQUERY4UFormat</span> = this.format;
</span> <span>},
</span>
<span>/**
</span><span> * Return today's date in dd/mm/yyyy format
</span><span> * <span>@returns <span>{String}</span> Date in dd/mm/yyyy format
</span></span><span> */
</span> <span>todaysDate: function()
</span> <span>{
</span> <span>return this.futureDateDays(0);
</span> <span>},
</span>
<span>/**
</span><span> * Return tomorrow's date in dd/mm/yyyy format
</span><span> * <span>@returns <span>{String}</span> Date in dd/mm/yyyy format
</span></span><span> */
</span> <span>tomorrowsDate: function()
</span> <span>{
</span> <span>return this.futureDateDays(1);
</span> <span>},
</span>
<span>/**
</span><span> * Return date 7 days from now in dd/mm/yyyy format
</span><span> * <span>@returns <span>{String}</span> Date in dd/mm/yyyy format
</span></span><span> */
</span> <span>weekFromToday: function()
</span> <span>{
</span> <span>return this.futureDateDays(7);
</span> <span>},
</span>
<span>/**
</span><span> * Return the first day of the next month
</span><span> * <span>@returns <span>{String}</span> Date in dd/mm/yyyy format
</span></span><span> */
</span> <span>firstDayNextMonth: function()
</span> <span>{
</span> <span>var today = new Date();
</span> nextMonth <span>= new Date(today.getFullYear(), today.getMonth() + 1, 1);
</span> nextMonth<span>.getDate() +'/'+ (nextMonth.getMonth() + 1) +'/'+ nextMonth.getFullYear();
</span> <span>return this.leadingZero(nextMonth.getDate()) +'/'+ this.leadingZero(nextMonth.getMonth() + 1) +'/'+ nextMonth.getFullYear();
</span> <span>},
</span>
<span>/**
</span><span> * Returns x number of dates date in the future in dd/mm/yyyy format
</span><span> * <span>@param <span>{Integer}</span> days Number of days into the future
</span></span><span> * <span>@returns <span>{String}</span> Date in dd/mm/yyyy format
</span></span><span> */
</span> <span>futureDateDays: function(days)
</span> <span>{
</span> <span>var futureDate = new Date();
</span> futureDate<span>.setDate(futureDate.getDate() + days);
</span> <span>return this.leadingZero(futureDate.getDate()) +'/'+ this.leadingZero(futureDate.getMonth() + 1) +'/'+ this.leadingZero(futureDate .getFullYear());
</span> <span>},
</span>
<span>/**
</span><span> * Return the current time in HHMM format
</span><span> * <span>@returns <span>{String}</span> Time in HHMM (e.g. 23:12) format
</span></span><span> */
</span> <span>timeHHMM: function()
</span> <span>{
</span> <span>var today = new Date();
</span> <span>return this.leadingZero(today.getHours()) + this.leadingZero(today.getMinutes());
</span> <span>},
</span>
<span>/**
</span><span> * Return the current time in HHMMSS format
</span><span> * <span>@returns <span>{String}</span> Time in HHMMSS (e.g. 23:12:33) format
</span></span><span> */
</span> <span>timeHHMMSS: function()
</span> <span>{
</span> <span>var today = new Date();
</span> <span>return this.leadingZero(today.getHours()) +':'+ this.leadingZero(today.getMinutes()) +':'+ this.leadingZero(today.getSeconds());
</span> <span>},
</span>
<span>/**
</span><span> * Takes a date string in Australian format and returns date string in US format
</span><span> * <span>@param <span>{String}</span> dateStr Date in dd/mm/yyyy format
</span></span><span> * <span>@param <span>{String}</span> <span>[separator=<span>"-"</span>]</span> separator character in return date string
</span></span><span> * <span>@returns <span>{String}</span> date in mm/dd/yyyy format
</span></span><span> */
</span> <span>convertUSFormat: function(dateStr<span>, separator</span>)
</span> <span>{
</span> <span>var separator = (typeof(separator) == 'undefined') ? '-' : separator;
</span> <span>var re = new RegExp('([0-9]{2})/([0-9]{2})/([0-9]{4})', 'm');
</span> <span>var matches = re.exec(dateStr);
</span> <span>return matches[2] + separator + matches[1] + separator + matches[3];
</span> <span>},
</span>
<span>/**
</span><span> * Convert date in mm/dd/yyyy format and return in dd-mm-yyyy format (depending upon separator)
</span><span> * <span>@param <span>{String}</span> dateStr Date in mm/dd/yyyy format
</span></span><span> * <span>@param <span>{String}</span> <span>[separator=<span>"-"</span>]</span> Separator character in return date string
</span></span><span> * <span>@returns <span>{String}</span> Date in mm-dd-yyyy format (presuming "-" is separator character)
</span></span><span> */
</span> <span>convertUStoAUSDate: function(dateStr<span>, separator</span>)
</span> <span>{
</span> <span>var separator = (typeof(separator) == 'undefined') ? '-' : separator;
</span> <span>var re = new RegExp('([0-9]{2})/([0-9]{2})/([0-9]{4})', 'm');
</span> <span>var matches = re.exec(dateStr);
</span> <span>return matches[2] + separator + matches[1] + separator + matches[3];
</span> <span>},
</span>
<span>/**
</span><span> * Return whether the supplied date components form the expected date
</span><span> * <span>@param <span>{String}</span> year
</span></span><span> * <span>@param <span>{String}</span> month
</span></span><span> * <span>@param <span>{String}</span> day
</span></span><span> * <span>@returns <span>{Boolean}</span> True if the date components match the date values in Date object
</span></span><span> */
</span> <span>isValidDate: function(year<span>, month, day</span>)
</span> <span>{
</span> <span>var dt = new Date(parseInt(year, 10), parseInt(month, 10)-1, parseInt(day, 10));
</span> <span>if(dt.getDate() != parseInt(day, 10) || dt.getMonth() != (parseInt(month, 10)-1) || dt.getFullYear() != parseInt(year, 10))
</span> <span>{
</span> <span>return false;
</span> <span>}
</span>
<span>return true;
</span> <span>},
</span>
<span>/**
</span><span> * Takes a date object and returns in yyyymmdd format
</span><span> * <span>@param <span>{Date Object}</span> dateObj
</span></span><span> * <span>@returns <span>{String}</span> Date in yyyymmdd format
</span></span><span> */
</span> <span>dateToYYYYMMDD: function(dateObj)
</span> <span>{
</span> <span>return (dateObj.getFullYear() + this.leadingZero(dateObj.getMonth() + 1) + this.leadingZero(dateObj.getDate())).toString();
</span> <span>},
</span>
<span>/**
</span><span> * Takes a date object and returns in ddmmyyyy format
</span><span> * <span>@param <span>{Date Object}</span> dateObj
</span></span><span> * <span>@returns <span>{String}</span> Date in ddmmyyyy format
</span></span><span> */
</span> <span>dateToDDMMYYYY: function(dateObj)
</span> <span>{
</span> <span>return (this.leadingZero(dateObj.getDate()) + this.leadingZero(dateObj.getMonth() + 1) + dateObj.getFullYear()).toString();
</span> <span>},
</span>
<span>/**
</span><span> * Takes a date string in dd/mm/yyyy format
</span><span> * <span>@param <span>{String}</span> dateString Date in dd/mm/yyyy format
</span></span><span> * <span>@returns <span>{Date Object}</span> Returns false if date sring is invalid
</span></span><span> */
</span> <span>stringToDate: function(dateString)
</span> <span>{
</span> <span>try
</span> <span>{
</span> <span>var matches = dateString.match(/([0-9]{2})/([0-9]{2})/([0-9]{4})/);
</span> <span>if(this.isValidDate(matches[3], matches[2], matches[1]) === false)
</span> <span>{
</span> <span>return false;
</span> <span>}
</span>
<span>return new Date(matches[3], parseInt(matches[2], 10)-1, parseInt(matches[1], 10));
</span> <span>}
</span> <span>catch(e)
</span> <span>{
</span> <span>return false;
</span> <span>}
</span> <span>},
</span>
<span>/**
</span><span> * Adds leading zero if passed value is single digit
</span><span> * <span>@param <span>{String}</span> val
</span></span><span> * <span>@returns <span>{String}</span>
</span></span><span> */
</span> <span>leadingZero: function(val)
</span> <span>{
</span> <span>var str = val.toString();
</span> <span>if(str.length == 1)
</span> <span>{
</span> str <span>= '0' + str;
</span> <span>}
</span>
<span>return str;
</span> <span>},
</span>
<span>/**
</span><span> * Checks if return date is equal or after departure date
</span><span> * <span>@param <span>{String}</span> departureDate
</span></span><span> * <span>@param <span>{String}</span> returnDate
</span></span><span> * <span>@returns <span>{Boolean}</span>
</span></span><span> */
</span> <span>isDepartureReturnDateValid: function(departureDate<span>, returnDate</span>)
</span> <span>{
</span> <span>var dep = this.stringToDate(departureDate);
</span> <span>var ret = this.stringToDate(returnDate);
</span> <span>if(dep > ret)
</span> <span>{
</span> <span>return false;
</span> <span>}
</span>
<span>return true;
</span> <span>},
</span>
<span>/**
</span><span> * Detect whether the year supplied is a leap year
</span><span> * <span>@param <span>{Integer}</span> year
</span></span><span> * <span>@returns <span>{Boolean}</span>
</span></span><span> */
</span> <span>isLeapYear: function(year)
</span> <span>{
</span> year <span>= parseInt(year, 10);
</span> <span>if(year % 4 == 0)
</span> <span>{
</span> <span>if(year % 100 != 0)
</span> <span>{
</span> <span>return true;
</span> <span>}
</span> <span>else
</span> <span>{
</span> <span>if(year % 400 == 0)
</span> <span>{
</span> <span>return true;
</span> <span>}
</span> <span>else
</span> <span>{
</span> <span>return false;
</span> <span>}
</span> <span>}
</span> <span>}
</span> <span>return false;
</span> <span>},
</span>
<span>compareDates: function(<span>from, to</span>)
</span> <span>{
</span> <span>var dateResult = to.getTime() - from.getTime();
</span> <span>var dateObj = {};
</span> dateObj<span>.weeks = Math.round(dateResult/(1000 * 60 * 60 * 24 * 7));
</span> dateObj<span>.days = Math.ceil(dateResult/(1000 * 60 * 60 * 24));
</span> dateObj<span>.hours = Math.ceil(dateResult/(1000 * 60 * 60));
</span> dateObj<span>.minutes = Math.ceil(dateResult/(1000 * 60));
</span> dateObj<span>.seconds = Math.ceil(dateResult/(1000));
</span> dateObj<span>.milliseconds = dateResult;
</span> <span>return dateObj;
</span> <span>},
</span>
<span>compareDatesDDMMYYYY: function(<span>from, to</span>)
</span> <span>{
</span> <span>from = from.split('/');
</span> <span>from = new Date(from[2], from[1], from[0]);
</span> to <span>= to.split('/');
</span> to <span>= new Date(to[2], to[1], to[0]);
</span> <span>return this.compareDates(from, to);
</span> <span>},
</span>
<span>/**
</span><span> * Allow nice formatting of dates like PHP's Date function
</span><span> * Derived from code written by Jac Wright at http://jacwright.com/projects/javascript/date_format
</span><span> * <span>@param <span>{Date}</span> date JavaScript date object
</span></span><span> * <span>@param <span>{String}</span> format Date format string
</span></span><span> * <span>@returns <span>{String}</span>
</span></span><span> */
</span> <span>format: function()
</span> <span>{
</span> <span>var date,
</span> format<span>,
</span> args <span>= [].slice.call(arguments),
</span> returnStr <span>= '',
</span> curChar <span>= '',
</span> months <span>= ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'],
</span> days <span>= ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'],
</span> methods <span>=
</span> <span>{
</span> <span>// Day
</span> <span>d: function() { return (date.getDate() < 10 ? '0' : '') + date.getDate(); },
</span> <span><span>D</span>: function() { return days[date.getDay()].substring(0, 3); },
</span> <span>j: function() { return date.getDate(); },
</span> <span>l: function() { return days[date.getDay()]; },
</span> <span><span>N</span>: function() { return date.getDay() + 1; },
</span> <span><span>S</span>: function() { return (date.getDate() % 10 == 1 && date.getDate() != 11 ? 'st' : (date.getDate() % 10 == 2 && date.getDate() != 12 ? 'nd' : (date.getDate() % 10 == 3 && date.getDate() != 13 ? 'rd' : 'th'))); },
</span> <span>w: function() { return date.getDay(); },
</span>
<span>// Month
</span> <span><span>F</span>: function() { return months[date.getMonth()]; },
</span> <span>m: function() { return (date.getMonth() < 9 ? '0' : '') + (date.getMonth() + 1); },
</span> <span><span>M</span>: function() { return months[date.getMonth()].substring(0, 3); },
</span> <span>n: function() { return date.getMonth() + 1; },
</span> <span><span>Y</span>: function() { return date.getFullYear(); },
</span> <span>y: function() { return ('' + date.getFullYear()).substr(2); },
</span>
<span>// Time
</span> <span>a: function() { return date.getHours() < 12 ? 'am' : 'pm'; },
</span> <span><span>A</span>: function() { return date.getHours() < 12 ? 'AM' : 'PM'; },
</span> <span>g: function() { return date.getHours() % 12 || 12; },
</span> <span><span>G</span>: function() { return date.getHours(); },
</span> <span>h: function() { return ((date.getHours() % 12 || 12) < 10 ? '0' : '') + (date.getHours() % 12 || 12); },
</span> <span><span>H</span>: function() { return (date.getHours() < 10 ? '0' : '') + date.getHours(); },
</span> <span>i: function() { return (date.getMinutes() < 10 ? '0' : '') + date.getMinutes(); },
</span> <span>s: function() { return (date.getSeconds() < 10 ? '0' : '') + date.getSeconds(); },
</span>
<span>// Timezone
</span> <span><span>O</span>: function() { return (-date.getTimezoneOffset() < 0 ? '-' : '+') + (Math.abs(date.getTimezoneOffset() / 60) < 10 ? '0' : '') + (Math.abs(date.getTimezoneOffset() / 60)) + '00'; },
</span> <span><span>P</span>: function() { return (-date.getTimezoneOffset() < 0 ? '-' : '+') + (Math.abs(date.getTimezoneOffset() / 60) < 10 ? '0' : '') + (Math.abs(date.getTimezoneOffset() / 60)) + ':' + (Math.abs(date.getTimezoneOffset() % 60) < 10 ? '0' : '') + (Math.abs(date.getTimezoneOffset() % 60)); },
</span> <span><span>T</span>: function() { var m = date.getMonth(); date.setMonth(0); var result = date.toTimeString().replace(<span>/<span>^.+ (?(<span>[^)]</span>+))?$</span>/</span>, ''); date.setMonth(m); return result;},
</span> <span><span>Z</span>: function() { return -date.getTimezoneOffset() * 60; },
</span>
<span>// Full Date/Time
</span> <span>c: function() { return date.format("Y-m-d") + "T" + date.format("H:i:sP"); },
</span> <span>r: function() { return date.toString(); },
</span> <span><span>U</span>: function() { return date.getTime() / 1000; }
</span> <span>};
</span>
<span>if(typeof this.getMonth == 'function')
</span> <span>{
</span> date <span>= this;
</span> format <span>= args[0];
</span> <span>}
</span> <span>else
</span> <span>{
</span> date <span>= args[0];
</span> format <span>= args[1];
</span> <span>}
</span>
<span>for(var i = 0; i < format.length; i++)
</span> <span>{
</span> <span>var curChar = format.charAt(i);
</span> <span>if(methods[curChar])
</span> <span>{
</span> returnStr <span>+= methods[curChar].call();
</span> <span>}
</span> <span>else
</span> <span>{
</span> returnStr <span>+= curChar;
</span> <span>}
</span> <span>}
</span> <span>return returnStr;
</span> <span>}
</span> <span>};
</span>
<span>JQUERY4U.DATETIME.init();
</span><span>})(jQuery);</span>Frequently Asked Questions (FAQs) about JavaScript DateTime Functions
What is the difference between JavaScript Date() and new Date()?
In JavaScript, Date() and new Date() are used to work with dates and times. However, they function differently. When you use Date() as a function without the ‘new’ keyword, it returns the current date and time as a string. On the other hand, when you use new Date(), it returns a new Date object representing the current date and time.
How can I format a date in JavaScript?
JavaScript provides several methods to format a date. The most common method is to use the toDateString() function, which converts a date to a more readable format. You can also use methods like toLocaleDateString() or toISOString() to format the date according to the locale or in ISO standard format respectively.
How can I add or subtract days from a date in JavaScript?
To add or subtract days from a date in JavaScript, you can use the setDate() and getDate() methods. For example, to add 5 days to the current date, you would use the following code:
var date = new Date();
date.setDate(date.getDate() 5);
To subtract days, you would do the same but with a negative number.
How can I compare two dates in JavaScript?
In JavaScript, you can compare two dates using the standard comparison operators (==, !=, , =). However, it’s important to note that these operators compare the date objects, not the actual dates. To compare the dates themselves, you should convert them to a standard format, such as the number of milliseconds since the Unix Epoch (January 1, 1970), using the getTime() method.
How can I get the current time in JavaScript?
To get the current time in JavaScript, you can use the Date object’s methods. The simplest way is to create a new Date object without any arguments, which will represent the current date and time. Then, you can use methods like getHours(), getMinutes(), and getSeconds() to get the current time.
How can I convert a string to a date in JavaScript?
JavaScript’s Date object can parse strings into dates. You can pass the string to the Date constructor, and it will try to parse it. However, it’s important to note that the parsing depends on the format of the string, and it may not work as expected for all formats.
How can I get the day of the week in JavaScript?
JavaScript provides the getDay() method, which returns the day of the week as a number (0 for Sunday, 1 for Monday, and so on). To get the name of the day, you can create an array of names and use the number as an index.
How can I check if a year is a leap year in JavaScript?
To check if a year is a leap year in JavaScript, you can use a simple function that checks if the year is divisible by 4 but not by 100, unless it’s also divisible by 400. This is because leap years are every year that is evenly divisible by 4, except for years that are evenly divisible by 100. However, years that are evenly divisible by 400 are also leap years.
How can I get the difference between two dates in JavaScript?
To get the difference between two dates in JavaScript, you can subtract one date object from another. This will give you the difference in milliseconds. You can then convert this to days, hours, minutes, or seconds as needed.
How can I set a specific date and time in JavaScript?
To set a specific date and time in JavaScript, you can pass the year, month, day, hours, minutes, and seconds as arguments to the Date constructor. Note that the month is zero-based, so January is 0, February is 1, and so on.
The above is the detailed content of jQuery DATETIME Functions - Complete Listing. For more information, please follow other related articles on 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
1371
52
Replace String Characters in JavaScript
Mar 11, 2025 am 12:07 AM
Detailed explanation of JavaScript string replacement method and FAQ This article will explore two ways to replace string characters in JavaScript: internal JavaScript code and internal HTML for web pages. Replace string inside JavaScript code The most direct way is to use the replace() method: str = str.replace("find","replace"); This method replaces only the first match. To replace all matches, use a regular expression and add the global flag g: str = str.replace(/fi
Build Your Own AJAX Web Applications
Mar 09, 2025 am 12:11 AM
So here you are, ready to learn all about this thing called AJAX. But, what exactly is it? The term AJAX refers to a loose grouping of technologies that are used to create dynamic, interactive web content. The term AJAX, originally coined by Jesse J
How do I create and publish my own JavaScript libraries?
Mar 18, 2025 pm 03:12 PM
Article discusses creating, publishing, and maintaining JavaScript libraries, focusing on planning, development, testing, documentation, and promotion strategies.
How do I optimize JavaScript code for performance in the browser?
Mar 18, 2025 pm 03:14 PM
The article discusses strategies for optimizing JavaScript performance in browsers, focusing on reducing execution time and minimizing impact on page load speed.
jQuery Matrix Effects
Mar 10, 2025 am 12:52 AM
Bring matrix movie effects to your page! This is a cool jQuery plugin based on the famous movie "The Matrix". The plugin simulates the classic green character effects in the movie, and just select a picture and the plugin will convert it into a matrix-style picture filled with numeric characters. Come and try it, it's very interesting! How it works The plugin loads the image onto the canvas and reads the pixel and color values: data = ctx.getImageData(x, y, settings.grainSize, settings.grainSize).data The plugin cleverly reads the rectangular area of the picture and uses jQuery to calculate the average color of each area. Then, use
How do I debug JavaScript code effectively using browser developer tools?
Mar 18, 2025 pm 03:16 PM
The article discusses effective JavaScript debugging using browser developer tools, focusing on setting breakpoints, using the console, and analyzing performance.
How to Build a Simple jQuery Slider
Mar 11, 2025 am 12:19 AM
This article will guide you to create a simple picture carousel using the jQuery library. We will use the bxSlider library, which is built on jQuery and provides many configuration options to set up the carousel. Nowadays, picture carousel has become a must-have feature on the website - one picture is better than a thousand words! After deciding to use the picture carousel, the next question is how to create it. First, you need to collect high-quality, high-resolution pictures. Next, you need to create a picture carousel using HTML and some JavaScript code. There are many libraries on the web that can help you create carousels in different ways. We will use the open source bxSlider library. The bxSlider library supports responsive design, so the carousel built with this library can be adapted to any
How to Upload and Download CSV Files With Angular
Mar 10, 2025 am 01:01 AM
Data sets are extremely essential in building API models and various business processes. This is why importing and exporting CSV is an often-needed functionality.In this tutorial, you will learn how to download and import a CSV file within an Angular
