===Writing Calendar 1===
When calendar.html is called
MYCAL:CALENDAR, the current month's calendar will be displayed on the page. The function setCal() is the main program segment. It initializes some variables and calls the drawCal() function. We also use three other functions: getMonthName(),
getDays() and leapYear(). Let's start with the last function:
The getDays() function receives which month value and which year value, and creates an array with 12 elements to store the number of days in each month, and which year is used to determine whether it is a leap year. , February has 29 days in a leap year, instead of 28 days in a leap year. This function returns the number of days in the specified month.
The following is getDays():
function getDays(month, year) { // create array to hold number of days in each month var ar = new Array(12); ar[0] = 31; // January ar[1] = (leapYear(year)) ? 29 : 28; // February ar[2] = 31; // March ar[3] = 30; // APRil ar[4] = 31; // May ar[5] = 30; // June ar[6] = 31; // July ar[7] = 31; // August ar[8] = 30; // September ar[9] = 31; // October ar[10] = 30; // November ar[11] = 31; // December // return number of days in the specified month (parameter) return ar[month]; } 如果指定的年数可以被4整除,那么leapYear()函数将返回“true”,否则返回”false“: function leapYear(year) { if (year % 4 == 0) // basic rule return true; // is leap year /* else */ // else not needed when statement is "return" return false; // is not leap year } getMonthName()函数返回指定月份的名字: function getMonthName(month) { // create array to hold name of each month var ar = new Array(12); ar[0] = "January"; ar[1] = "February"; ar[2] = "March"; ar[3] = "April"; ar[4] = "May"; ar[5] = "June"; ar[6] = "July"; ar[7] = "August"; ar[8] = "September"; ar[9] = "October"; ar[10] = "November"; ar[11] = "December"; // return name of specified month (parameter) return ar[month]; } setCal()函数是主模块,我们在脚本的第一行调用它。该函数为当天(now)、和每月的第一天(firstDayInstance)建立一个Date对象。用这些对象,setCal()函数解析出关于一个月的第一天、当日,和最后一天的所有信息。 function setCal() { // standard time attributes var now = new Date(); var year = now.getFullYear(); var month = now.getMonth(); var monthName = getMonthName(month); var date = now.getDate(); now = null; // create instance of first day of month, and extract the day on which it occurs var firstDayInstance = new Date(year, month, 1); var firstDay = firstDayInstance.getDay(); firstDayInstance = null; // number of days in current month var days = getDays(month, year); // call function to draw calendar drawCal(firstDay + 1, days, date, monthName, year); }
The above is the content of the fourth HTML component (HTML COMPONENTS). For more related articles, please pay attention to the PHP Chinese website (www.php.cn)!

本篇文章带大家了解一下HTML(超文本标记语言),介绍一下HTML的本质,HTML文档的结构、HTML文档的基本标签和图像标签、列表、表格标签、媒体元素、表单,希望对大家有所帮助!

不算。html是一种用来告知浏览器如何组织页面的标记语言,而CSS是一种用来表现HTML或XML等文件样式的样式设计语言;html和css不具备很强的逻辑性和流程控制功能,缺乏灵活性,且html和css不能按照人类的设计对一件工作进行重复的循环,直至得到让人类满意的答案。

总结了一些web前端面试(笔试)题分享给大家,本篇文章就先给大家分享HTML部分的笔试题(附答案),大家可以自己做做,看看能答对几个!

HTML5中画布标签是“<canvas>”。canvas标签用于图形的绘制,它只是一个矩形的图形容器,绘制图形必须通过脚本(通常是JavaScript)来完成;开发者可利用多种js方法来在canvas中绘制路径、盒、圆、字符以及添加图像等。

html5废弃了dir列表标签。dir标签被用来定义目录列表,一般和li标签配合使用,在dir标签对中通过li标签来设置列表项,语法“<dir><li>列表项值</li>...</dir>”。HTML5已经不支持dir,可使用ul标签取代。

在html中,document是文档对象的意思,代表浏览器窗口的文档;document对象是window对象的子对象,所以可通过“window.document”属性对其进行访问,每个载入浏览器的HTML文档都会成为Document对象。

html5支持boolean值属性;boolean值属性指是属性值为true或者false的属性,如input元素中的disabled属性,不使用该属性表示值为flase,不禁用元素,使用该属性可以不设置属性值表示值为true,禁用元素。


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