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/拿到最新日期 function getnowtime() {              var nowtime = new Date();              var year = nowtime.getFullYear();              var month = padleft0(nowtime.getMonth() + 1);              var day = padleft0(nowtime.getDate());              return year + "-" + month + "-" + day;          }    //补齐两位数          function padleft0(obj) {              return obj.toString().replace(/^[0-9]{1}$/, "0" + obj);          }//拿到前一天function getpreDay(){	   var d = new Date();       d.setTime(d.getTime()-24*60*60*1000);      var s = padleft0(d.getFullYear())+"-" + padleft0(d.getMonth()+1) + "-" + padleft0(d.getDate());      return s;}

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