常用js 时间函数

//本月

var d = new Date();               d.setDate(1);               var first_day = d.getFullYear() + '-' + (d.getMonth() +1) + '-' + d.getDate();               d.setMonth(d.getMonth() +1);               d.setDate(0);               var last_day = d.getFullYear() + '-' + (d.getMonth() +1) + '-' + d.getDate();console.log(first_day);console.log(last_day);

 

//本周

 

var d = new Date();               var n = d.getDay();               var f = d.getDate() - n + 1;               var l = d.getDate() + 7 - n;               d.setDate(f);               var first_day = d.getFullYear() + '-' + (d.getMonth() +1) + '-' + d.getDate();               d.setDate(l);               var last_day = d.getFullYear() + '-' + (d.getMonth() +1) + '-' + d.getDate(); console.log(first_day);console.log(last_day);