function getLastDay (year, mon) =>{
var dt = new Date(year, mon, 1);
let cdt = new Date(dt.getTime()-1000*60*60*24);
return cdt.getDate();
}
function getLastDay (year, mon) =>{
var dt = new Date(year, mon, 1);
let cdt = new Date(dt.getTime()-1000*60*60*24);
return cdt.getDate();
}
本文标题:获取某月的最后一天
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