简单格式化时间基础
不同格式需要在转化下
function getCurrentTime() {
let keep = ''
let date = new Date()
let y = date.getFullYear()
let m = (date.getMonth() + 1).toString().padStart(2,'0')
let d = date.getDate().toString().padStart(2,'0')
let h = date.getHours().toString().padStart(2,'0')
let f = date.getMinutes().toString().padStart(2,'0')
let s = date.getSeconds().toString().padStart(2,'0')
keep = y + '' + m + '' + d + '' + h + '' + f + '' + s
return keep // 20160614134947
}