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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd" >
<html>
<head>
<meta http-equiv ="Content-Type" content ="text/html; charset=UTF-8" >
<title> 周选择工具 </title >
</head >
<body >
<input name ="weekPicker" readonly ="readonly" type ="text" id ="weekPicker" style ="width:250px" >
<input type ="button" name ="Submit" value ="上一周" onClick ="javascript:pickWeek(-1)" >
<input type ="button" name ="Submit2" value ="下一周" onClick ="javascript:pickWeek(1)" >
<script type ="text/javascript" >
function getThisWeek(year,month,day) {
var today = new Date(year,month - 1 ,day);
var week = today.getDay();
if (week == 0 ) {
week = 7 ;
}
var monday = new Date(today.valueOf() - (week - 1 ) * 24 * 60 * 60 * 1000 );
var sunday = new Date(monday.valueOf() + 6 * 24 * 60 * 60 * 1000 );
return monday.getFullYear() + "-" + ((monday.getMonth() + 1 ).toString().length == 1 ? ( "0" + (monday.getMonth() + 1 )):(monday.getMonth() + 1 )) + "-" + (monday.getDate().toString().length == 1 ? "0" + monday.getDate():monday.getDate()) + " 到 " + sunday.getFullYear() + " - " + ((sunday.getMonth() + 1 ).toString().length == 1 ? ( "0" + (sunday.getMonth() + 1 )):(sunday.getMonth() + 1 )) + "-" + (sunday.getDate().toString().length == 1 ? "0" + sunday.getDate():sunday.getDate());
}
function getPreviousWeek(year,month,day) {
var today = new Date(year,month - 1 ,day);
var week = today.getDay();
if (week == 0 ) {
week = 7 ;
}
var monday = new Date(today.valueOf() - (week + 6 ) * 24 * 60 * 60 * 1000 );
var sunday = new Date(monday.valueOf() + 6 * 24 * 60 * 60 * 1000 );
return monday.getFullYear() + "-" + ((monday.getMonth() + 1 ).toString().length == 1 ? ( "0" + (monday.getMonth() + 1 )):(monday.getMonth() + 1 )) + "-" + (monday.getDate().toString().length == 1 ? "0" + monday.getDate():monday.getDate()) + " 到 " + sunday.getFullYear() + " - " + ((sunday.getMonth() + 1 ).toString().length == 1 ? ( "0" + (sunday.getMonth() + 1 )):(sunday.getMonth() + 1 )) + "-" + (sunday.getDate().toString().length == 1 ? "0" + sunday.getDate():sunday.getDate());
}
function getNextWeek(year,month,day) {
var today = new Date(year,month - 1 ,day);
var week = today.getDay();
if (week == 0 ) {
week = 7 ;
}
var monday = new Date(today.valueOf() - (week - 8 ) * 24 * 60 * 60 * 1000 );
var sunday = new Date(monday.valueOf() + 6 * 24 * 60 * 60 * 1000 );
return monday.getFullYear() + "-" + ((monday.getMonth() + 1 ).toString().length == 1 ? ( "0" + (monday.getMonth() + 1 )):(monday.getMonth() + 1 )) + "-" + (monday.getDate().toString().length == 1 ? "0" + monday.getDate():monday.getDate()) + " 到 " + sunday.getFullYear() + " - " + ((sunday.getMonth() + 1 ).toString().length == 1 ? ( "0" + (sunday.getMonth() + 1 )):(sunday.getMonth() + 1 )) + "-" + (sunday.getDate().toString().length == 1 ? "0" + sunday.getDate():sunday.getDate());
}
function pickWeek(id) {
var year;
var month;
var day;
if (id == 0 ) {
var today = new Date();
year = today.getFullYear();
month = today.getMonth() + 1 ;
day = today.getDate();
} else {
var today = document.getElementById("weekPicker" ).value.split( "到" )[0].split("-");
year = today[0];
month = today[1];
day = today[2];
}
switch (id) {
case 0: {
document.getElementById("weekPicker").value = getThisWeek(year,month,day);
break ;
}
case 1: {
document.getElementById("weekPicker").value = getNextWeek(year,month,day);
break ;
}
case -1: {
document.getElementById("weekPicker").value = getPreviousWeek(year,month,day);
break ;
}
}
}
pickWeek(0);
</script >
</body >
</html >
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原文地址：http://www.cnblogs.com/lofty/p/4192152.html
