刚刚js做项目,遇到需要获取昨天日期的问题,网上找了下答案,感觉网上的答案都不太严谨,自己写了个,凑合能用吧,忘大神们抛砖指教.
<script type="text/javascript" language="javascript">
function getYestoday(date){
var arrMonth = new Array([], [], [], [], [], [], [], [], [], [], [], [], []);//初始化月份(第一个0,占位作用,让下标和月份对应)
var strYear = date.getFullYear();//获取年份
var strDay = date.getDate();//获取日期
var strMonth = date.getMonth() + ;//获取月份
///判断是否是闰年
if (strYear % == && strYear % != ) {
arrMonth[] = ;
}
///判断日期是否是第一天
if (strDay - == ) {
///判断月份是否是一月
if (strMonth - == ) {
strYear -= ;
strMonth = ;
} else {
strMonth -= ;
}
strDay = arrMonth[strMonth];
} else {
strDay -= ;
}
///月份小于10,前面加0
if (strMonth < ) {
strMonth = "" + strMonth;
}
///日期小于10,前面加0
if (strDay < ) {
strDay = "" + strDay;
}
return strYear + "-" + strMonth + "-" + strDay;
}
alert(getYestoday(new Date("2012-1-1")));//测试日期
</script>