4.设置时间格式为年.月.日:时:分:秒

formatDateTime(inputTime) { var date = new Date(inputTime); 

var y = date.getFullYear(); 

var m = date.getMonth() + 1;

 m = m < 10 ? ('0' + m) : m; 

var d = date.getDate(); 

d = d < 10 ? ('0' + d) : d; 

var h = date.getHours(); 

h = h < 10 ? ('0' + h) : h;

 var minute = date.getMinutes(); 

var second = date.getSeconds(); 

minute = minute < 10 ? ('0' + minute) : minute;

 second = second < 10 ? ('0' + second) : second; 

return     y + '-' + m + '-' + d + ' ' + h + ':' + minute + ':' + second;

},