后台获取时间2019-12-02 12:12:12，页面只显示日期2019-12-02 处理方式

 var time = "2019-12-02 12:12:12"; 

console.log(time.split(" ")[0]);   //2019-12-02

//正则表达式截取

 var tims = '2018-12-06 10:10:10'

 console.log(tims.replace(/\s[\x00-\xff]*/g,''))  //2018-12-06