<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Test</title> <script type="text/javascript" language="javascript" > function get3MonthBefor(){ var resultDate,year,month,date,hms; var currDate = new Date(); year = currDate.getFullYear(); month = currDate.getMonth()+1; date = currDate.getDate(); hms = currDate.getHours() + ':' + currDate.getMinutes() + ':' + (currDate.getSeconds() < 10 ? '0'+currDate.getSeconds() : currDate.getSeconds()); switch(month) { case 1: case 2: case 3: month += 9; year--; break; default: month -= 3; break; } month = (month < 10) ? ('0' + month) : month; resultDate = year + '-'+month+'-'+date+' ' + hms; return resultDate; } document.write(get3MonthBefor()); </script> </head> <body> </body> </html>
运行效果图如下:
PS:这里再为大家推荐几款时间及日期相关工具供大家参考使用:
更多关于JavaScript相关内容感兴趣的读者可查看本站专题:《JavaScript时间与日期操作技巧总结》《JavaScript错误与调试技巧总结》、《JavaScript数据结构与算法技巧总结》、《JavaScript遍历算法与技巧总结》及《JavaScript数学运算用法总结》
希望本文所述对大家JavaScript程序设计有所帮助。
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