JavaScript日期判断，今天所在季度，第几周， 季度的第几周，年度第几周
jopen
10年前
<html> <head> <title>日期判断 周 月 季 年</title> <script type="text/javascript"> var getMonthWeek = function (a, b, c) { var date = new Date(a, parseInt(b) - 1, c), w = date.getDay(), d = date.getDate(); return Math.ceil( (d + 6 - w) / 7 ); }; var getYearWeek = function (a, b, c) { var date1 = new Date(a, parseInt(b) - 1, c), date2 = new Date(a, 0, 1), d = Math.round((date1.valueOf() - date2.valueOf()) / 86400000); return Math.ceil( (d + ((date2.getDay() + 1) - 1)) / 7 ); }; var today = new Date();//获取当前时间 var y = today.getFullYear(); var m = today.getMonth()+1; var d = today.getDate(); document.write("今天是：",y,"-", m, "-", d, "<br/>"); document.write( "今天是",y,"年的第 ", getYearWeek(y, m, d), " 周<br/>" ); document.write( "今天是",m,"月的第 ", getMonthWeek(y, m, d), " 周<br/>" ); var quarter = ""; var result = getYearWeek(y, m, d); if (m <4) { quarter = 1; week = result; } else if (m < 7) { quarter = 2; week = result - getYearWeek(y, 4, 1); var day = new Date(y, 4, 1); if (day.getDay() > 1) { week += 1; } } else if (m < 10) { quarter = 3; week = result - getYearWeek(y, 7, 1); var day = new Date(y, 7, 1); if (day.getDay() > 1) { week += 1; } } else { quarter = 4; week = result - getYearWeek(y, 10, 1); var day = new Date(y, 10, 1); if (day.getDay() > 1) { week += 1; } } document.write( "今天是第",quarter,"季度的第 ", week, " 周" ); </script> </head> <body> </body> </html>