话不多说上代码: //离下一个圣诞节还有多少天 var christ=new Date(); christ.setMonth(11); christ.setDate(25); var year=now.getFullYear(); var diff=christ-now; var time; if(diff<0){ christ.setFullYear(year+1); diff=christ-now; } time=Math.ceil(1.0*diff/(1000*3600*24)); doc…