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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <meta charset="UTF-8">
- <meta name="viewport" content="width=device-width, initial-scale=1.0">
- <title>Document</title>
- </head>
- <body>
- <script>
- var year = prompt("请输入年份");
- console.log(year)
- // 除以4 为0
- // 除以100 余数！=0
-
- if((year % 4 == 0 && year % 100 != 0) || year % 400 == 0) {
- alert("当前为闰年");
- } else {
- alert("当前为平年");
- }
- </script>
- </body>
- </html>
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