封装一个时间戳

主要应用：更新博客，评论等尾部带时间

function dateStr(d,sign){

if(!sign){

sign='-'

}else{

sign = sign;

}

let year = d.getFullYear(),

month = d.getMonth()+1,

day = d.getDate(),

hours = d.getHours(),

minutes = d.getMinutes(),

seconds = d.getSeconds();

return year + sign + mendZero(month) + sign + mendZero(day) 

+ mendZero(hours)+sign + mendZero(minutes) + sign + mendZero(seconds);

}

 

字符串补零 

function mendZero(num){

return num = num < 10 ? '0' + num : num;

}