function getDate(){ 
     var nowDate = new Date();
     var year = nowDate.getFullYear();
     var month = nowDate.getMonth() + 1 < 10 ? "0" + (nowDate.getMonth() + 1): nowDate.getMonth() + 1;
     var day = nowDate.getDate() < 10 ? "0" + nowDate.getDate() : nowDate.getDate();
     var dateStr =year + "-" + month + "-" + day; 
     return dateStr;
}