This article introduces JavaScript to implement the daily check-in function. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.
Let’s take a look at the renderings first:
var calUtil = {
getDaysInmonth : function(iMonth, iYear){ //当前年月的总天数
var dPrevDate = new Date(iYear, iMonth, 0);
return dPrevDate.getDate();
},
bulidCal : function(iYear, iMonth) { //构建当前年月对应的日历
var aMonth = new Array();
aMonth[0] = new Array(7);
aMonth[1] = new Array(7);
aMonth[2] = new Array(7);
aMonth[3] = new Array(7);
aMonth[4] = new Array(7);
aMonth[5] = new Array(7);
aMonth[6] = new Array(7);
var dCalDate = new Date(iYear, iMonth - 1, 1);
var iDayOfFirst = dCalDate.getDay();
var iDaysInMonth = calUtil.getDaysInmonth(iMonth, iYear);
var iVarDate = 1;
var d, w;
aMonth[0][0] = "日";
aMonth[0][1] = "一";
aMonth[0][2] = "二";
aMonth[0][3] = "三";
aMonth[0][4] = "四";
aMonth[0][5] = "五";
aMonth[0][6] = "六";
for (d = iDayOfFirst; d < 7; d++) {
aMonth[1][d] = iVarDate;
iVarDate++;
}
for (w = 2; w < 7; w++) {
for (d = 0; d < 7; d++) {
if (iVarDate <= iDaysInMonth) {
aMonth[w][d] = iVarDate;
iVarDate++;
}
}
}
return aMonth;
},
ifHasSigned : function(signList,day){
var signed = false;
$.each(signList,function(index,item){
var date = new Date(item.signDate);
if(date.getDate() == day) {
signed = true;
return false;
}
});
return signed ;
},
drawCal : function(iYear, iMonth ,signList) {
var currentYearMonth = iYear+"年"+iMonth+"月";
var myMonth = calUtil.bulidCal(iYear, iMonth);
var htmls = new Array();
htmls.push("<p class='sign_main' id='sign_layer'>");
htmls.push("<p class='sign_succ_calendar_title'>");
htmls.push("<p class='calendar_month_span'>"+currentYearMonth+"</p>");
htmls.push("</p>");
htmls.push("<p class='sign' id='sign_cal'>");
htmls.push("<table class='table'>");
htmls.push("<tr>");
htmls.push("<th>" + myMonth[0][0] + "</th>");
htmls.push("<th>" + myMonth[0][1] + "</th>");
htmls.push("<th>" + myMonth[0][2] + "</th>");
htmls.push("<th>" + myMonth[0][3] + "</th>");
htmls.push("<th>" + myMonth[0][4] + "</th>");
htmls.push("<th>" + myMonth[0][5] + "</th>");
htmls.push("<th>" + myMonth[0][6] + "</th>");
htmls.push("</tr>");
var d, w;
for (w = 1; w < 7; w++) {
htmls.push("<tr>");
for (d = 0; d < 7; d++) {
var ifHasSigned = calUtil.ifHasSigned(signList,myMonth[w][d]);
if(ifHasSigned){
htmls.push("<td class='on'>" + (!isNaN(myMonth[w][d]) ? myMonth[w][d] : " ") + "</td>");
} else {
htmls.push("<td>" + (!isNaN(myMonth[w][d]) ? myMonth[w][d] : " ") + "</td>");
}
}
htmls.push("</tr>");
}
htmls.push("</table>");
htmls.push("</p>");
htmls.push("</p>");
return htmls.join('');
}
};Page effect code:
<style type="text/css">
@media screen and (min-width:1024px) {
.rich_media {
width: 500px;
margin-left: auto;
margin-right: auto;
padding: 20px;
}
}
</style>
</head>
<body style="background-color: #fff;">
<p class="rich_media">
<p id="page-content">
<p style="text-align: center;background-color: #2FAA00;height: 50px;margin-bottom: 20px;">
<span style="cursor: pointer;font-weight: 600;font-size: 20px;color: #fff;height: 50px;line-height: 50px;">每日签到</span>
<input type="hidden" id="userId" value="${user.id }" />
</p>
<p class="container-fluid">
<p class="row-fluid" id="calendar">
</p>
<p id="btnp" style="display: none;">
<p class="row-fluid text-center">
<span id="sing_for_number" class="btn btn-default">签到</span>
</p>
</p>
</p>
</p>
</p> </body>js calling method
var str = calUtil.drawCal(current.getFullYear(),current.getMonth() + 1,signList);
$("#calendar").html(str);
Instructions : signList is a collection of signed-in times queried in the background. When passed to the js method, it will be judged on which day the sign-in was made, and then the display effect of the sign-in day will be changed, as shown in the picture above!
This check-in page is also suitable for mobile browsers!
Abstract:
This article takes writing the calendar of the current month in the current time environment as an example, using the simplest method to implement a JavaScript calendar, aiming to demonstrate practical and simple solutions in the JS world. ideas.
Calendars in Web pages are generally inseparable from tables, and tables are usually used to load information such as dates of specified months. Therefore, to write a JS calendar, the first problem that must be solved is the rows and columns of the table. The columns are fixed, seven columns, because there are seven days in a week. The rows need to be calculated dynamically, because the day of the week on which the first day of each month falls is a variable, so the number of cells in the table for the first day also changes accordingly. At the same time, the inconsistency in the total number of days in each month also affects The required number of table rows in each month.
1. Problem with the number of rows in the table
1. First get the total number of days in the processing month
JS does not provide this parameter, we need to calculate it. Considering that the leap year problem will affect the number of days in February, we first write a self-written function to determine the leap year:
function is_leap(year) {
return (year%100==0?res=(year%400==0?1:0):res=(year%4==0?1:0));
}
Then define an array containing the total number of days in the month including twelve months:
m_days=new Array(31,28+is_leap(ynow),31,30,31,31,30,31,30,31,30,31);
In the m_days array, the number of days in February has been added to the leap year information: 28 is_leap(ynow). The array elements start from 0, which corresponds to the getMonth return value provided by the Date function provided by JS, that is, 0 represents January, 1 represents February, 2 represents March, and so on.
In this way, the total number of each month can be obtained as follows: m_days[x]. Among them, x is a natural number from 0 to 11.
2. Calculate the day of the week that the first day of the month is
You can use the getDay of the Date function to get it. The returned value is from 0 to 6, 0 means Monday, 1 means Tuesday, and 2 means Wednesday and so on for the rest. The code is as follows (assuming that the time to be processed is March 2008):
n1str=new Date(2008,3,1); firstday=n1str.getDay();
With the two known conditions of the total number of days in the month and the day of the week on which the first day of the month is, you can solve the required rows of the table Numbering problem: (The first day of the current month is the day of the week) divided by seven. The table function requires integers, so we use Math.ceil to process it:
tr_str=Math.ceil((m_days[mnow] + firstday)/7);
The tr tag in the table actually represents the rows of the table, so the variable tr_str is an important basis for us to write down the table.
2. Print calendar table
You can use two for statements to be nested: the outer for statement writes rows, and the inner for statement writes cells.
for(i=0;i<tr_str>"); for(k=0;k"); } //外层for语句结束</tr_str>
Whether the natural serial number of the cell represents a valid date is very critical. For this reason, a filtering mechanism must be added: only valid dates are printed. Valid dates are greater than 0 and less than or equal to the total number of days in the month to be processed.
3. The following is the complete JS calendar code:
function is_leap(year) {
return (year%100==0?res=(year%400==0?1:0):res=(year%4==0?1:0));
} //是否为闰年var nstr=new Date(); //当前Date资讯var ynow=nstr.getFullYear(); //年份var mnow=nstr.getMonth(); //月份var dnow=nstr.getDate(); //今日日期var n1str=new Date(ynow,mnow,1); //当月第一天Date资讯var firstday=n1str.getDay(); //当月第一天星期几var m_days=new Array(31,28+is_leap(ynow),31,30,31,30,31,31,30,31,30,31); //各月份的总天数var tr_str=Math.ceil((m_days[mnow] + firstday)/7); //表格所需要行数//打印表格第一行（有星期标志）document.write ("
| 日 | 一 | 二 | 三 | 四 | 五 | 六 | " + date_str + " | ") : document.write ("" + date_str + " | "); } document.write(""); //表格的行结束} document.write("
Summary: The above is the entire content of this article, I hope it will be helpful to everyone's learning. For more related tutorials, please visit JavaScript Video Tutorial!
Related recommendations:
php public welfare training video tutorial
The above is the detailed content of JavaScript implements daily check-in function. For more information, please follow other related articles on the PHP Chinese website!
JavaScript in Action: Real-World Examples and ProjectsApr 19, 2025 am 12:13 AMJavaScript's application in the real world includes front-end and back-end development. 1) Display front-end applications by building a TODO list application, involving DOM operations and event processing. 2) Build RESTfulAPI through Node.js and Express to demonstrate back-end applications.
JavaScript and the Web: Core Functionality and Use CasesApr 18, 2025 am 12:19 AMThe main uses of JavaScript in web development include client interaction, form verification and asynchronous communication. 1) Dynamic content update and user interaction through DOM operations; 2) Client verification is carried out before the user submits data to improve the user experience; 3) Refreshless communication with the server is achieved through AJAX technology.
Understanding the JavaScript Engine: Implementation DetailsApr 17, 2025 am 12:05 AMUnderstanding how JavaScript engine works internally is important to developers because it helps write more efficient code and understand performance bottlenecks and optimization strategies. 1) The engine's workflow includes three stages: parsing, compiling and execution; 2) During the execution process, the engine will perform dynamic optimization, such as inline cache and hidden classes; 3) Best practices include avoiding global variables, optimizing loops, using const and lets, and avoiding excessive use of closures.
Python vs. JavaScript: The Learning Curve and Ease of UseApr 16, 2025 am 12:12 AMPython is more suitable for beginners, with a smooth learning curve and concise syntax; JavaScript is suitable for front-end development, with a steep learning curve and flexible syntax. 1. Python syntax is intuitive and suitable for data science and back-end development. 2. JavaScript is flexible and widely used in front-end and server-side programming.
Python vs. JavaScript: Community, Libraries, and ResourcesApr 15, 2025 am 12:16 AMPython and JavaScript have their own advantages and disadvantages in terms of community, libraries and resources. 1) The Python community is friendly and suitable for beginners, but the front-end development resources are not as rich as JavaScript. 2) Python is powerful in data science and machine learning libraries, while JavaScript is better in front-end development libraries and frameworks. 3) Both have rich learning resources, but Python is suitable for starting with official documents, while JavaScript is better with MDNWebDocs. The choice should be based on project needs and personal interests.
From C/C to JavaScript: How It All WorksApr 14, 2025 am 12:05 AMThe shift from C/C to JavaScript requires adapting to dynamic typing, garbage collection and asynchronous programming. 1) C/C is a statically typed language that requires manual memory management, while JavaScript is dynamically typed and garbage collection is automatically processed. 2) C/C needs to be compiled into machine code, while JavaScript is an interpreted language. 3) JavaScript introduces concepts such as closures, prototype chains and Promise, which enhances flexibility and asynchronous programming capabilities.
JavaScript Engines: Comparing ImplementationsApr 13, 2025 am 12:05 AMDifferent JavaScript engines have different effects when parsing and executing JavaScript code, because the implementation principles and optimization strategies of each engine differ. 1. Lexical analysis: convert source code into lexical unit. 2. Grammar analysis: Generate an abstract syntax tree. 3. Optimization and compilation: Generate machine code through the JIT compiler. 4. Execute: Run the machine code. V8 engine optimizes through instant compilation and hidden class, SpiderMonkey uses a type inference system, resulting in different performance performance on the same code.
Beyond the Browser: JavaScript in the Real WorldApr 12, 2025 am 12:06 AMJavaScript's applications in the real world include server-side programming, mobile application development and Internet of Things control: 1. Server-side programming is realized through Node.js, suitable for high concurrent request processing. 2. Mobile application development is carried out through ReactNative and supports cross-platform deployment. 3. Used for IoT device control through Johnny-Five library, suitable for hardware interaction.
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
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Atom editor mac version download
The most popular open source editor
Dreamweaver CS6
Visual web development tools
mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),
SublimeText3 Chinese version
Chinese version, very easy to use
MantisBT
Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.
