<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> </head> <body> <div> <div onclick="prevDay()">前一天</div> <div id="daytimer"></div> <div onclick="nextDay()">后一天</div> </div> </body> </html>
<script> var daytimer = document.getElementById('daytimer'); var currentDate = new Date(); var currentYear = currentDate.getFullYear(); var currentMonth = currentDate.getMonth() + 1; var currentDay = currentDate.getDate(); var currentTimestamp = currentDate.getTime(); daytimer.innerHTML = currentYear + '-' + currentMonth + '-' + currentDay; function prevDay() { currentTimestamp -= 24 * 60 * 60 * 1000; var prevDate = new Date(currentTimestamp); var prevYear = prevDate.getFullYear(); var prevMonth = prevDate.getMonth() + 1; var prevDay = prevDate.getDate(); daytimer.innerHTML = prevYear + '-' + prevMonth + '-' + prevDay; } function nextDay() { currentTimestamp += 24 * 60 * 60 * 1000; var nextDate = new Date(currentTimestamp); var nextYear = nextDate.getFullYear(); var nextMonth = nextDate.getMonth() + 1; var nextDay = nextDate.getDate(); daytimer.innerHTML = nextYear + '-' + nextMonth + '-' + nextDay; } </script>
