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How to make an annual calendar using javascript

王林Original: 2021-11-02 16:35:304517browse

How to use javascript to make an annual calendar: [function calendar(y){ var w = new Date(y,0).getDay(); var html = '

';for(m =1;m<...>

The operating environment of this article: windows10 system, javascript 1.8.5, thinkpad t480 computer.

If we need to display specific items of a certain month on a web page, we often need to use the calendar component. Calendar components usually have many ready-made class libraries, so how do we develop a calendar ourselves? The following shows you a very Let’s take a look at the classic calendar component!

HTML：

<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>制作年历</title>
		<style>
			body{text-align:center;}
			.box{margin:0 auto;width:880px;}
			.title{background: #ccc;}
			table{height:200px;width:200px;font-size:12px;text-align:center;float:left;margin:10px;font-family:arial;}
		</style>
		<script src="calendar.js"></script>
		<script>
			var year = parseInt(prompt(&#39;输入年份：&#39;,&#39;2019&#39;));//制作弹窗
			document.write(calendar(year));//调用函数生成指定年份的年历
		</script>
	</head>
	<body>
	</body>
</html>

calendar.js

function calendar(y){
	//获取指定年份1月1日的星期数值
	var w = new Date(y,0).getDay();
	var html = &#39;<div class="box">&#39;;
	
	//拼接每个月份的表格
	for(m=1;m<=12;m++){
		html += &#39;<table>&#39;;
		html += &#39;<tr class="title"><th colspan="7">&#39; + y + &#39;年&#39; +m+&#39; 月</th></tr>&#39;;
		html += &#39;<tr><td>日</td><td>一</td><td>二</td><td>三</td><td>四</td><td>五</td><td>六</td></tr>&#39;
		
		//获取每个月份共有多少天
		var max = new Date(y,m,0).getDate();
		
		html += &#39;<tr>&#39;;//开始<tr>标签
		for (d=1;d<=max;d++){
			if(w && d== 1){//如果该月的第1天不是星期日，则填充空白
				html += &#39;<td colspan ="&#39; + w + &#39;"> </td>&#39;;
			}
			html += &#39;<td>&#39; +d+ &#39;</td>&#39;;
			if(w == 6 && d != max){//如果星期六不是该月的最后一天，则换行
				html += &#39;</tr><tr>&#39;;
			}else if(d==max){//该月的最后一天，闭合</tr>标签
				html += &#39;</tr>&#39;;
			}
			w = (w+1>6) ? 0 : w+1;
		}
		html += &#39;</table>&#39;;
	}
	html += &#39;</div>&#39;;
	return html;
}

Final effect:

How to make an annual calendar using javascript

Recommended learning: javascript video tutorial

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